Download System Indoor Unit SERVICE MANUAL R410A

Internal Use Only
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System
Indoor Unit R410A
SERVICE MANUAL R410A
MODEL : ARNU Series
URNU Series
CAUTION
Before Servicing the unit, read the safety precautions in General SVC manual.
Only for authorized service personnel.
Air Conditioner Service Manual
TABLE OF CONTENTS
Part 1 General Information .......................................................................................................3
Model Names ...............................................................................................................................4
External Appearance ...................................................................................................................5
Nomenclature ...............................................................................................................................6
Part 2 Indoor Units ......................................................................................................................7
Ceiling Mounted Cassette Type (1 way) ........................................................................................8
Ceiling Mounted Cassette Type (2 way) ......................................................................................16
Ceiling Mounted Cassette Type (4 way)(1)..................................................................................21
Ceiling Mounted Cassette Type (4 way)(2)..................................................................................27
Art Cool Type(Mirror) ...................................................................................................................34
Art Cool Type(Gallery) .................................................................................................................45
Ceiling Concealed Duct Type (Low static) ...................................................................................55
Ceiling Concealed Duct Type (Built in) ........................................................................................61
Ceiling Concealed Duct Type (High static) ..................................................................................67
Wall Mounted Type ......................................................................................................................76
Ceiling & Floor Ceiling Suspended ..............................................................................................87
Floor Standing Type.....................................................................................................................94
Vertical Air Handling Unit ...........................................................................................................101
Part 3 Trouble shooting guide...............................................................................109
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
-2-
LGE Internal Use Only
Part 1
General Information
1. Model Names .............................................4
2. External Appearance .................................5
3. Nomenclature .............................................6
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
-3-
LGE Internal Use Only
Model Names
1. Model Names
Category
Wall Mounted
(General)
ART
COOL
Chassis
Name
SE
S5
SE
Mirror
S8
1 Way
TJ
2 Way
TL
TR
Ceiling
Cassette
TQ
4 Way
7.5
9.6
12.3
15.4
19.1
(2.2) (2.8) (3.6) (4.5) (5.6)
ARNU07 ARNU09 ARNU12 ARNU15
3SE*2 3SE*2 3SE*2 3SE*2
ARNU18
3S5*2
ARNU07 ARNU09 ARNU12 ARNU15
3SE*2 3SE*2 3SE*2 3SE*2
ARNU18
3S8*2
ARNU07 ARNU09 ARNU12
3TJ*2 3TJ*2 3TJ*2
ARNU18
3TL*2
ARNU07 ARNU09 ARNU12
3TR*2 3TR*2 3TR*2
ARNU15 ARNU18
3TQ*2 3TQ*2
Capacity(Btu/h(kW))
24.2
28.0 30.0
36.2
42.0
(7.1) (8.2) (8.8) (10.6) (12.3)
54.0
(15.8)
ARNU24
3S5*2
ARNU24
3S8*2
ARNU24
3TL*2
ARNU36
3TN*2
TN
ARNU42 ARNU48
3TM*2 3TM*2
TM
ARNU07 ARNU09 ARNU12 ARNU15 ARNU18 ARNU24
3BHA2 3BHA2 3BHA2 3BHA2 3BHA2 3BHA2
ARNU28
3BGA2
BG
High Static
ARNU36 ARNU42
3BGA2 3BGA2
ARNU483
BRA2
BR
URNU76 URNU96
3B8A2 3B8A2
B8
Ceiling
Concealed
Duct
B1
Low Static
ARNU07 ARNU09 ARNU12 ARNU15
3B1G2 3B1G2 3B1G2 3B1G2
ARNU18 ARNU24
3B2G2 3B2G2
B2
B3
Built In
ARNU07 ARNU09 ARNU12 ARNU15
3B3G2 3B3G2 3B3G2 3B3G2
ARNU18 ARNU24
3B4G2 3B4G2
B4
Ceiling & Floor
VE
Ceiling Suspended
VJ
CE
With Case
ARNU09 ARNU12
3VEA2 3VEA2
ARNU18
3VJA2
ARNU07 ARNU09 ARNU12 ARNU15
3CEA2 3CEA2 3CEA2 3CEA2
ARNU18 ARNU24
3CFA2 3CFA2
CF
Floor
Standing
Without
Case
CE
76.4
95.5
(22.4) (28.0)
ARNU24 ARNU28
3TP*2 3TP*2
TP
BH
48.1
(14.1)
ARNU07 ARNU09 ARNU12 ARNU15
3CEU2 3CEU2 3CEU2 3CEU2
CF
NJ
Vertical AHU
ARNU18
3CFU2
ARNU18
3NJA2
ARNU24
3CFU2
ARNU24
3NJA2
ARNU30 ARNU36
3NJA2 3NJA2
ARNU42 ARNU48 ARNU54
3NKA2 3NKA2 3NKA2
NK
h *ART COOL- SE/S8( * R:Mirror, V:Silver, B : Blue), SF(* E:Red, V:Silver, G:Gold , 1: Kiss (Photo changeable))
*Wall Mounted- A: Basic, L:Plasma, *Ceiling Cassette- A: Basic, C:Plasma
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
-4-
LGE Internal Use Only
External Appearance
2. External Appearance
Ceiling Cassette- 1Way
Ceiling Concealed Duct - High Static
ARNU073TJ*2
ARNU093TJ*2
ARNU123TJ*2
ARNU073BHA2
ARNU093BHA2
ARNU123BHA2
ARNU153BHA2
ARNU183BHA2
ARNU243BHA2
ARNU283BGA2
* A:Basic, C:Plasma
Ceiling Cassette- 4Way
ARNU073TR*2
ARNU093TR*2
ARNU123TR*2
ARNU153TQ*2
ARNU183TQ*2
ARNU243TP*2
ARNU283TP*2
ARNU363TN*2
ARNU423TM*2
ARNU483TM*2
ARNU363BGA2
ARNU423BGA2
ARNU483BRA2
URNU763B8A2
URNU963B8A2
Wall Mounted
ARNU073SE*2
ARNU093SE*2
ARNU123SE*2
ARNU153SE*2
ARNU183S5*2
ARNU243S5*2
* A:Basic, L:Plasma
* A:Basic, C:Plasma
Ceiling Concealed Duct - Low Static
ART COOL Mirror
ARNU073B1G2
ARNU093B1G2
ARNU123B1G2
ARNU073SE*2
ARNU093SE*2
ARNU123SE*2
ARNU153SE*2
ARNU183S8*2
ARNU243S8*2
ARNU153B1G2
ARNU183B2G2
ARNU243B2G2
Ceiling Concealed Duct – Built-in
ARNU073B3G2
ARNU093B3G2
ARNU123B3G2
* R:Mirror
V:Silver
B : Blue
Floor Standing
With case
ARNU153B3G2
ARNU183B4G2
ARNU243B4G2
ARNU073CEA2
ARNU093CEA2
ARNU123CEA2
ARNU153CEA2
ARNU183CFA2
ARNU243CFA2
Ceiling & Floor
Without case
ARNU093VEA2
ARNU123VEA2
ARNU183VJA2
ARNU243VJA2
ARNU073CEU2
ARNU093CEU2
ARNU123CEU2
ARNU153CEU2
ARNU183CFU2
ARNU243CFU2
Ceiling Cassette -2Way
Vertical AHU
ARNU183TL*2
ARNU243TL*2
ARNU183NJA2
ARNU243NJA2
ARNU303NJA2
ARNU363NJA2
ARNU423NKA2
ARNU483NKA2
ARNU543NKA2
Ceiling Suspended
* A:Basic, C:Plasma
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
-5-
LGE Internal Use Only
Nomenclature
3. Nomenclature
ARN
U
07
3
TJ
A
2
Generation
Combinations of functions
A: Basic function
L: Neo Plasma(Wall Mounted)
C:Plasma(Ceiling Cassette)
G: Low Static
U: Floor Standing without Case
ART COOL Type Panel Color
B:Blue R:Mirror V: Silver
Chassis Name
Electrical Ratings
1:1Ø, 115V, 60Hz
6:1Ø, 220 - 240V, 50Hz
3:1Ø, 208/230V, 60Hz
2: 1Ø, 220V, 60Hz
7: 1Ø, 100V, 50/60Hz
Total Cooling Capacity in Btu/h Class
EX) 18,000 Btu/h Class → '18'
Combination of Inverter Type and
Cooling Only or Heat Pump
N: AC Inverter and H/P V: AC Inverter and C/O
U: DC Inverter and H/P and C/O
System with
Indoor Unit using R410A
❈ LGETA:U Ex) URN
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
-6-
LGE Internal Use Only
Part 2
Indoor Units
Ceiling Cassette
1 Way .................................................................................8
2 Way...............................................................................13
4 Way(1)...........................................................................20
4 Way(2)...........................................................................23
Art Cool Series
ART COOL Miror..............................................................34
ART COOL Gallery ..........................................................45
Ceiling Concealed Duct
Low Static ........................................................................55
Built In ..............................................................................62
High Static........................................................................67
Wall Mounted(General)
Wall Mounted ...................................................................76
Ceiling & Floor
Ceiling & Floor
Ceiling Suspended...........................................................87
Floor Standing
Floor Standing..................................................................94
Vertical Air Handling Unit................................................117
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
-7-
LGE Internal Use Only
Ceiling Mounted Cassette Type (1Way)
1. Functions ......................................................................................9
2. Operation Details........................................................................10
3. Dimensions .................................................................................12
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
-8-
LGE Internal Use Only
Functions
1. Functions
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Indoor Fan Speed Control
• Room temperature sensor. (Thermistor)
• Maintains the room temperature in accordance with the Setting Temperature.
• Indoor fan is delayed for 5 seconds at the starting.
• Jet, High, Med, Low, Lolow
Soft Dry Operation Mode
• Intermittent operation of fan at low speed.
Airflow Direction Control
• The louver can be set at swing up and down automatically.
Auto Restart
• Although the air-conditioner is turned off by a power failure, it is restarted automatically previous operation mode after power supply.
Deice (defrost) control (Heating)
• Both the indoor and outdoor fan stops during defrosting.
• Hot start after defrost ends.
Hot-start Control (Heating)
• The indoor fan does not rotate until the evaporator piping temperature will be reached at 25°C(76°F).
Compact and light design
• To install a unit is very convenient because of smaller
size than textile.
Low noise
Long life filter
High head Drain pump
• The most advanced low-noise design.
• The adoption of turbo fan and round type heat exchanger give the quietest operation.
• Long life wrinkle(type) and washable and anti-bacteria
filter is adopted.
• Built-in drain pump automatically drains water.
• A standard drain-head height of up to 700mm(27-9/16inch) is
possible.
High-Ceiling corresponding Function
• According to the height of ceiling, the RPM of indoor fan
motor is selected to increase air reaching distance.
Central Control(Optional)
• It is operating individually or totally by central control function.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
-9-
LGE Internal Use Only
Operation Detail
2. Operation Detail
(1) The function of main control
n Auto Swing Control
• This function is to swing the louver up and down automatically.
n Soft-Dry Operation
• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of
already being set to the best speed for Dry Operation by microcontroller control.
n Cooling Mode Operation
• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote controller and the operation diagram is as following
Intake Air Temperature
Thermo. ON
(SET TEMPERATURE
+0.5°C(33°F))
Thermo. OFF
(SET TEMPERATURE
-0.5°C(33°F))
INDOOR FAN
Indoor Unit mode
2TH (Remo.+Indoor)
Remo. Mode
More than
3 minutes
Selected
Speed
Low
More than
3 minutes
Selected
Speed
Low
Selected
Speed
Thermal ON
ST+0.5
To be selected higher temperature
Thermal OFF
ST-0.5
To be selected higher temperature
contrast Indoor Unit and Remo.
ST+0.5
contrast Indoor Unit and Remo.
ST-0.5
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 10 -
LGE Internal Use Only
Operation Detail
n Heating Mode Operation
The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Indoor pipe
Temperature
36°C(96°F)
33°C(92°F)
25°C(76°F)
20°C(68°F)
Room
Temperature
Thermal Off
Thermal On
Minimum
3min
Thermal
Outdoor fan
Indoor fan
ON
OFF
ON
ON
Setting
Stop Low Low
fan
speed
OFF
ON
4 Way
Setting
fan
speed
Low
Low Stop
Stop Low
Setting
fan
speed
ON
Thermal ON
ST+2
To be selected lower temperature
contrast Indoor Unit and Remo.
ST+0
Indoor Unit mode
2TH
(Remo.+Indoor)
Remo. mode
Thermal OFF
ST+4
To be selected lower temperature
contrast Indoor Unit and Remo.
ST+2
n Hot-start Control
• The indoor fan does no rotate until the evaporator piping temperature will be reached to 25°C(76°F).
• The operation diagram is as following.
Pipe
temperature
35°C(94°F)
30°C(86°F)
27°C(80°F)
25°C(76°F)
22°C(72°F)
LO
LOW
Indoor fan
speed
COMP
OFF
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LOW
SELECTED
FAN
LOW
LOLOW
ON
- 11 -
LGE Internal Use Only
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 12 1,100
881(Air outlet Hole)
1012
861
88
500
34
106.8
206.6
275.8
57.4
96.5
168.3
27
Air suction grill
Air discharge grill
4
(unit : mm)
Unit size(7k, 9k, 12k):ø12.7
Unit size(7k, 9k, 12k):ø6.35
Descripition
CHASSIS CODE: TU
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
1. Unit should be installed in compliance with the installation manual
in the product box.
Note
Gas pipe connection
2
3
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
(Panel Name: PT-UUC)
320.5
453
Liquid pipe connection
Name
1
Number
ARNU07GTU*2
ARNU09GTU*2
ARNU12GTU*2
Ceiling Cassette 1-way
Dimensions
3. Dimensions
LGE Internal Use Only
453
354.3
500
46.5
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 13 -
109.5
1012
1100
88
109.5
453
320.5
34
861
27
106.8
206.3
275.8
96.5
168.3
57.4
Air discharge grill
4
Unit size(7k, 9k, 12k):ø12.7
Unit size(7k, 9k, 12k):ø6.35
Descripition
(unit : mm)
CHASSIS CODE: TU
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
1. Unit should be installed in compliance with the installation manual
in the product box.
Note
Air suction grill
Gas pipe connection
3
Liquid pipe connection
1
Name
2
Number
ARNU07GTU*2
ARNU09GTU*2
ARNU12GTU*2
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
(Panel Name: PT-UUD)
117
Ceiling Cassette 1-way
Dimensions
LGE Internal Use Only
247.5
180.6
65.3
453.8
173.8
96.1
91
20.6 57.4
31.7
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 14 1,201(Air Outlet Hole)
1,420
1332
1176.4
65.1
500
34
453.8
Air discharge grill
4
CHASSIS CODE: TT
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
1. Unit should be installed in compliance with the installation manual
in the product box.
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
(Panel Name: PT-UTC)
Air suction grill
3
Note
Gas pipe connection
Unit size(18k):ø12.7, (24k):ø15.88
Liquid pipe connection Unit size(18k):ø6.35, (24k):ø9.52
Descripition
1
Name
(unit : mm)
2
Number
ARNU18GTT*2
ARNU24GTT*2
Ceiling Cassette 1-way
Dimensions
LGE Internal Use Only
65.3
453.8
247.5
180.6
173.8
97.1
91
500
57.4
31.7
20.6
46.5
- 15 -
34
109.5
1332
1420
Ø14
65.1
15.2
1176.4
22.3
57
132
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
109.5
335
453.8
44
Air discharge grill
CHASSIS CODE: TT
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
1. Unit should be installed in compliance with the installation manual
in the product box.
Note
4
Air suction grill
3
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
(Panel Name: PT-UTD)
96.5
Gas pipe connection
Unit size(18k):ø12.7, (24k):ø15.88
Liquid pipe connection Unit size(18k):ø6.35, (24k):ø9.52
Descripition
2
Name
(unit : mm)
1
Number
ARNU18GTT*2
ARNU24GTT*2
Ceiling Cassette 1-way
Dimensions
LGE Internal Use Only
Ceiling Mounted Cassette Type (2Way)
1. Functions ....................................................................................17
2. Operation Details........................................................................18
3. Dimensions .................................................................................20
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 16 -
LGE Internal Use Only
Functions
1. Functions
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Indoor Fan Speed Control
• Room temperature sensor. (Thermistor)
• Maintains the room temperature in accordance with the Setting Temperature.
• Indoor fan is delayed for 5 seconds at the starting.
• Jet, High, Med, Low, Lolow
Soft Dry Operation Mode
• Intermittent operation of fan at low speed.
Airflow Direction Control
• The louver can be set at swing up and down automatically.
Auto Restart
• Although the air-conditioner is turned off by a power failure, it is restarted automatically previous operation mode after power supply.
Deice (defrost) control (Heating)
• Both the indoor and outdoor fan stops during defrosting.
• Hot start after defrost ends.
Hot-start Control (Heating)
• The indoor fan does not rotate until the evaporator piping temperature will be reached at 25°C(76°F).
Compact and light design
• To install a unit is very convenient because of smaller
size than textile.
Low noise
Long life filter
• The most advanced low-noise design.
• The adoption of turbo fan and round type heat exchanger give the quietest operation.
• Long life wrinkle(type) and washable and anti-bacteria
filter is adopted.
High head Drain pump
• Built-in drain pump automatically drains water.
• A standard drain-head height of up to 700mm
(27-9/16inch) is possible.
High-Ceiling corresponding Function
• According to the height of ceiling, the RPM of indoor fan
motor is selected to increase air reaching distance.
Central Control(Optional)
• It is operating individually or totally by central control function.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 17 -
LGE Internal Use Only
Operation Detail
2. Operation Detail
(1) The function of main control
n Auto Swing Control
• This function is to swing the louver up and down automatically.
n Soft-Dry Operation
• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of
already being set to the best speed for Dry Operation by microcontroller control.
n Cooling Mode Operation
• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote controller and the operation diagram is as following
Intake Air Temperature
Thermo. ON
(SET TEMPERATURE
+0.5°C(33°F))
Thermo. OFF
(SET TEMPERATURE
-0.5°C(33°F))
INDOOR FAN
Indoor Unit mode
2TH (Remo.+Indoor)
Remo. Mode
More than
3 minutes
Selected
Speed
Low
Thermal ON
ST+0.5
To be selected higher temperature
contrast Indoor Unit and Remo.
ST+0.5
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 18 -
More than
3 minutes
Selected
Speed
Low
Selected
Speed
Thermal OFF
ST-0.5
To be selected higher temperature
contrast Indoor Unit and Remo.
ST-0.5
LGE Internal Use Only
Operation Detail
n Heating Mode Operation
The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Indoor pipe
Temperature
36°C(96°F)
33°C(92°F)
25°C(76°F)
20°C(68°F)
Room
Temperature
Thermal Off
Thermal On
Minimum
3min
Thermal
Outdoor fan
Indoor fan
ON
OFF
ON
ON
Setting
Stop Low Low
fan
speed
OFF
ON
Setting
fan
speed
Low
4 Way
Low Stop
Stop Low
Setting
fan
speed
ON
Thermal ON
ST+2
To be selected lower temperature
contrast Indoor Unit and Remo.
ST+0
Indoor Unit mode
2TH
(Remo.+Indoor)
Remo. mode
Thermal OFF
ST+4
To be selected lower temperature
contrast Indoor Unit and Remo.
ST+2
n Hot-start Control
• The indoor fan does no rotate until the evaporator piping temperature will be reached to 25°C(76°F).
• The operation diagram is as following.
Pipe
temperature
35°C(94°F)
30°C(86°F)
27°C(80°F)
25°C(76°F)
22°C(72°F)
LO
LOW
Indoor fan
speed
COMP
OFF
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LOW
SELECTED
FAN
LOW
LOLOW
ON
- 19 -
LGE Internal Use Only
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 20 -
3
4
2
1
640(25-3/16)
550(21-11/16)
28.5(1-1/8)
126.5(5)
B
TL
225(8-7/8)
A
A
LG Electronics USA, HVAC Division
1000 Sylvan Avenue, Englewood Cliffs, NJ 07632
www.lgusa.com / www.lghvac.com
1050(41-5/16)
889.2(35)
830(32-11/16)
275(10-13/16)
69.5(2-3/4)
B
47.9(1-7/8)
Name
Note
(18k) ø12.7(1/2), (24k)ø15.88(5/8)
(18k) ø6.35(1/4), (24k)ø9.52(3/8)
Descripition
[Unit : mm(inch)]
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
www.lgeaircon.com
CHASSIS CODE: TL
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
1. Unit should be installed in compliance with the installation manual
in the product box.
Air discharge grill
Air suction grill
4
Gas pipe connection
2
Liquid pipe connection
3
1
Number
ARNU183TL*2
ARNU243TL*2
Ceiling Cassette 2-way
Dimensions
3. Dimensions
LGE Internal Use Only
Ceiling Mounted Cassette Type (4Way) (1)
1. Functions ....................................................................................22
2. Operation Details........................................................................23
3. Dimensions .................................................................................25
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 21 -
LGE Internal Use Only
Functions
1. Functions
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Indoor Fan Speed Control
• Room temperature sensor. (Thermistor)
• Maintains the room temperature in accordance with the Setting Temperature.
• Indoor fan is delayed for 5 seconds at the starting.
• Jet, High, Med, Low, Lolow
Soft Dry Operation Mode
• Intermittent operation of fan at low speed.
Airflow Direction Control
• The louver can be set at swing up and down automatically.
Auto Restart
• Although the air-conditioner is turned off by a power failure, it is restarted automatically previous operation mode after power supply.
Deice (defrost) control (Heating)
• Both the indoor and outdoor fan stops during defrosting.
• Hot start after defrost ends.
Hot-start Control (Heating)
• The indoor fan does not rotate until the evaporator piping temperature will be reached at 25°C(76°F).
Compact and light design
• To install a unit is very convenient because of smaller
size than textile.
Low noise
Long life filter
• The most advanced low-noise design.
• The adoption of turbo fan and round type heat exchanger give the quietest operation.
• Long life wrinkle(type) and washable and anti-bacteria
filter is adopted.
High head Drain pump
• Built-in drain pump automatically drains water.
• A standard drain-head height of up to 700mm
(27-9/16inch) is possible.
High-Ceiling corresponding Function
• According to the height of ceiling, the RPM of indoor fan
motor is selected to increase air reaching distance.
Central Control(Optional)
• It is operating individually or totally by central control function.
Swirl Swing Control
• It is operating swirl swing
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 22 -
LGE Internal Use Only
Operation Detail
2. Operation Detail
(1) The function of main control
n Auto Swing Control
• This function is to swing the louver up and down automatically.
n Soft-Dry Operation
• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of
already being set to the best speed for Dry Operation by microcontroller control.
n Cooling Mode Operation
• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote controller and the operation diagram is as following
Intake Air Temperature
Thermo. ON
(SET TEMPERATURE
+0.5°C(33°F))
Thermo. OFF
(SET TEMPERATURE
-0.5°C(33°F))
INDOOR FAN
More than
3 minutes
Selected
Speed
Indoor Unit mode
2TH (Remo.+Indoor)
Remo. Mode
Low
Thermal ON
ST+0.5
To be selected higher temperature
contrast Indoor Unit and Remo.
ST+0.5
More than
3 minutes
Selected
Speed
Selected
Speed
Low
Thermal OFF
ST-0.5
To be selected higher temperature
contrast Indoor Unit and Remo.
ST-0.5
n Swirl Swing Control
Vane 2
Vane 2, 4 is almost vane closed while vane1, 3 is opened.
Vane 1, 3 and vane 2,4 turn over minutely
Vane 1
Vane 3
Vane 4
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 23 -
LGE Internal Use Only
Operation Detail
n Heating Mode Operation
The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Indoor pipe
Temperature
36°C(96°F)
33°C(92°F)
25°C(76°F)
20°C(68°F)
Room
Temperature
Thermal Off
Thermal On
Minimum
3min
Thermal
Outdoor fan
Indoor fan
ON
OFF
ON
ON
Setting
Stop Low Low
fan
speed
OFF
ON
Setting
fan
speed
Low
4 Way
Low Stop
Stop Low
Setting
fan
speed
ON
Thermal ON
ST+2
To be selected lower temperature
contrast Indoor Unit and Remo.
ST+0
Indoor Unit mode
2TH
(Remo.+Indoor)
Remo. mode
Thermal OFF
ST+4
To be selected lower temperature
contrast Indoor Unit and Remo.
ST+2
n Hot-start Control
• The indoor fan does no rotate until the evaporator piping temperature will be reached to 25°C(76°F).
• The operation diagram is as following.
Pipe
temperature
35°C(94°F)
30°C(86°F)
27°C(80°F)
25°C(76°F)
22°C(72°F)
LO
LOW
Indoor fan
speed
COMP
OFF
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LOW
SELECTED
FAN
LOW
LOLOW
ON
- 24 -
LGE Internal Use Only
6
A
CEILING OPENING
700
473
380(Air outlet hole)
376(Inlet Grille)
22.5
5
700
B
4R20
4
523
59.5
84.5
3
A ARROW VIEW
30 19
142.5
2 1
79
53
48
- 25 -
128
570
165
461
570
517
5
570
517
Note
(unit : mm)
VP25(Φ32)
Unit size(5k, 7k, 9k, 12k):ø12.7
Unit size(5k, 7k, 9k, 12k):ø6.35
Descripition
B ARROW VIEW
500mm or more*
• REQUIRED SPACE
500mm or more*
CHASSIS CODE: TR
500mm or more*
500mm or more*
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
1. Unit should be installed in compliance with the installation manual
in the product box.
Air suction grill
Air discharge grill
5
6
Drain pipe connection
Power supply connection
4
Gas pipe connection
3
Liquid pipe connection
2
Name
1
Number
ARNU05GTR*2
ARNU07GTR*2
ARNU09GTR*2
ARNU12GTR*2
Ceiling Cassette 4-way
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
Branch Duct Connection
63
69
34.5
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
214
R3
Dimensions
3. Dimensions
LGE Internal Use Only
6
A
CEILING OPENING
700
473
380(Air outlet hole)
376(Inlet Grille)
22.5
B
5
4R20
4
59.5
523
30 19
142.5
2 1
3
A ARROW VIEW
125
95.5
- 26 79
48
570
165
461
570
517
174
5
517
Power supply connection
Air discharge grill
Air suction grill
3
4
5
6
Note
Gas pipe connection
Drain pipe connection
2
Liquid pipe connection
Name
1
Number
(unit : mm)
VP25(Φ32)
Unit size(15k, 18k):Ø12.7
Unit size(15k, 18k):Ø6.35
Descripition
ARNU15GTQ*2
ARNU18GTQ*2
Ceiling Cassette 4-way
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
500mm or more*
• REQUIRED SPACE
500mm or more*
CHASSIS CODE: TQ
500mm or more*
500mm or more*
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
1. Unit should be installed in compliance with the installation manual
in the product box.
B ARROW VIEW
Branch Duct Connection
63
68
570
256
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
76
94
R3
Dimensions
LGE Internal Use Only
700
Ceiling Mounted Cassette Type (4Way) (2)
1. Functions ....................................................................................28
2. Operation Details........................................................................29
3. Dimensions .................................................................................31
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 27 -
LGE Internal Use Only
Functions
1. Functions
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Indoor Fan Speed Control
• Room temperature sensor. (Thermistor)
• Maintains the room temperature in accordance with the Setting Temperature.
• Indoor fan is delayed for 5 seconds at the starting.
• Jet, High, Med, Low, Lolow
Soft Dry Operation Mode
• Intermittent operation of fan at low speed.
Airflow Direction Control
• The louver can be set at swing up and down automatically.
Auto Restart
• Although the air-conditioner is turned off by a power failure, it is restarted automatically previous operation mode after power supply.
Deice (defrost) control (Heating)
• Both the indoor and outdoor fan stops during defrosting.
• Hot start after defrost ends.
Hot-start Control (Heating)
• The indoor fan does not rotate until the evaporator piping temperature will be reached at 25°C(76°F).
Compact and light design
• To install a unit is very convenient because of smaller
size than textile.
Low noise
• The most advanced low-noise design.
• The adoption of turbo fan and round type heat exchanger give the quietest operation.
Long life filter
• Long life wrinkle(type) and washable and anti-bacteria
filter is adopted.
High head Drain pump
• Built-in drain pump automatically drains water.
• A standard drain-head height of up to 700mm
(27-9/16inch) is possible.
High-Ceiling corresponding Function
• According to the height of ceiling, the RPM of indoor fan
motor is selected to increase air reaching distance.
Central Control(Optional)
• It is operating individually or totally by central control function.
Swirl Swing Control
• It is operating swirl swing
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 28 -
LGE Internal Use Only
Operation Detail
2. Operation Detail
(1) The function of main control
n Auto Swing Control
• This function is to swing the louver up and down automatically.
n Soft-Dry Operation
• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of
already being set to the best speed for Dry Operation by microcontroller control.
n Cooling Mode Operation
• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote controller and the operation diagram is as following
Intake Air Temperature
Thermo. ON
(SET TEMPERATURE
+0.5°C(33°F))
Thermo. OFF
(SET TEMPERATURE
-0.5°C(33°F))
INDOOR FAN
Indoor Unit mode
2TH (Remo.+Indoor)
Remo. Mode
More than
3 minutes
Selected
Speed
Low
Thermal ON
ST+0.5
To be selected higher temperature
contrast Indoor Unit and Remo.
ST+0.5
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 29 -
More than
3 minutes
Selected
Speed
Low
Selected
Speed
Thermal OFF
ST-0.5
To be selected higher temperature
contrast Indoor Unit and Remo.
ST-0.5
LGE Internal Use Only
Operation Detail
n Heating Mode Operation
The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Indoor pipe
Temperature
36°C(96°F)
33°C(92°F)
25°C(76°F)
20°C(68°F)
Room
Temperature
Thermal Off
Thermal On
Minimum
3min
Thermal
Outdoor fan
Indoor fan
ON
OFF
ON
ON
Setting
Stop Low Low
fan
speed
OFF
ON
Setting
fan
speed
Low
4 Way
Low Stop
Stop Low
Setting
fan
speed
ON
Thermal ON
ST+2
To be selected lower temperature
contrast Indoor Unit and Remo.
ST+0
Indoor Unit mode
2TH
(Remo.+Indoor)
Remo. mode
Thermal OFF
ST+4
To be selected lower temperature
contrast Indoor Unit and Remo.
ST+2
n Hot-start Control
• The indoor fan does no rotate until the evaporator piping temperature will be reached to 25°C(76°F).
• The operation diagram is as following.
Pipe
temperature
35°C(94°F)
30°C(86°F)
27°C(80°F)
25°C(76°F)
22°C(72°F)
LO
LOW
Indoor fan
speed
COMP
OFF
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LOW
SELECTED
FAN
LOW
LOLOW
ON
- 30 -
LGE Internal Use Only
669(SUSPENSION POSITION)
420
393
13-ø 3, 3 Hole
26
31
475
71
B ARROW VIEW
35
Ceiling opening
614(Inlet Grille)
682(SUSPENSION POSITION)
ø70
OUTDOOR AIR INTAKE
(DIRECT CONNECTION)
B
950
25
870-920(CEILING OPENING SPACE)
500(Air outlet Hole)
737
950
420
870-920(CEILING OPENING SPACE)
786(SUSPENSION POSITION)
71
6
2
A
65 40
5
671
108 60
1
350
840
165
53.5
60
82
99
4
3
Branch Duct Connection
80
840
787
787
804
204
300
OR LESS
62
204
154
79
41.5
684
840
BRANCH DUCT
CONNECTION
92
4
Air suction grill
(unit : mm)
VP25(Φ32)
Unit size(24k, 28k):ø15.88
Unit size(24k, 28k):ø9.52
Descripition
92
10
350
50
92
165
92
500mm or more*
BRANCH DUCT
CONNECTION
500mm or more*
CHASSIS CODE: TP
500mm or more*
500mm or more*
• REQUIRED SPACE
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
1. Unit should be installed in compliance with the installation manual
in the product box.
Note
6
A ARROW VIEW
165
Drain pipe connection
Power supply connection
3
Air discharge grill
Gas pipe connection
5
Liquid pipe connection
1
Name
2
Number
ARNU21GTP*2
ARNU24GTP*2
ARNU28GTP*2
Ceiling Cassette 4-way
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
13-ø 3, 3 Hole
32
50
- 31 79
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
50
4-R20
Dimensions
3. Dimensions
LGE Internal Use Only
13-ø 3, 3 Hole
6
35
71
B
ø70
OUTDOOR AIR INTAKE
(DIRECT CONNECTION)
B ARROW VIEW
31
475
Ceiling opening
870-920(CEILING OPENING SPACE)
786(SUSPENSION POSITION)
614(Inlet Grille)
25
2
870-920(CEILING OPENING SPACE)
682(SUSPENSION POSITION)
500(Air outlet Hole)
737
950
110
1
A
60
840
165
350
103
141
246
3
4
Branch Duct Connection
53.5
80
840
78
5
420
300
OR LESS
80
669(SUSPENSION POSITION)
420
393
44
71
950
40
107
246
195
100
52
BRANCH DUCT
CONNECTION
43
60
- 32 13-ø 3, 3 Hole
100
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
60
4-R20
165
10
350
92
165
92
BRANCH DUCT
CONNECTION
500mm or more*
500mm or more*
CHASSIS CODE: TN
500mm or more*
500mm or more*
• REQUIRED SPACE
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
A ARROW VIEW
92
VP25(Φ32)
Unit size(36k):ø15.88
Unit size(36k):ø9.52
Descripition
(unit : mm)
1. Unit should be installed in compliance with the installation manual
in the product box.
Note
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
92
5
Air suction grill
Air discharge grill
4
6
Drain pipe connection
Power supply connection
3
Gas pipe connection
2
Name
Liquid pipe connection
1
Number
ARNU36GTN*2
Ceiling Cassette 4-way
Dimensions
LGE Internal Use Only
6
669(SUSPENSION POSITION)
420
393
13-ø 3, 3 Hole
31
475
ø70
B
OUTDOOR AIR INTAKE
(DIRECT CONNECTION)
B ARROW VIEW
35
71
Ceiling opening
682(SUSPENSION POSITION)
110
870-920(CEILING OPENING SPACE)
786(SUSPENSION POSITION)
300
OR LESS
420
614(Inlet Grille)
25
870-920(CEILING OPENING SPACE)
500(Air outlet Hole)
737
950
2
A
1
100
84
5
75
71
288
165
237
350
53.5
Branch Duct Connection
3
4
840
76
60
- 33 136
13-ø 3, 3 Hole
BRANCH DUCTCONNECTION
60
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
10
350
92
165
92
500mm or more*
CHASSIS CODE: TM
500mm or more*
500mm or more*
• REQUIRED SPACE
500mm or more*
BRANCH DUCT
CONNECTION
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
A ARROW VIEW
165
92
VP25(Φ32)
Unit size(42k, 48k):ø15.88
Unit size(42k, 48k):ø9.52
Descripition
(unit : mm)
1. Unit should be installed in compliance with the installation manual
in the product box.
Note
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
92
5
Air suction grill
Air discharge grill
4
6
Drain pipe connection
Power supply connection
3
Gas pipe connection
2
Name
Liquid pipe connection
ARNU42GTM*2
ARNU48GTM*2
Ceiling Cassette 4-way
1
Number
100
4-R20
Dimensions
LGE Internal Use Only
950
Art Cool Type(Mirror)
1. Functions ....................................................................................35
2. Operation Details........................................................................36
3. Dimensions .................................................................................43
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 34 -
LGE Internal Use Only
Functions
1. Functions
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
• Room temperature sensor. (THERMISTOR)
Room temperature control
• Maintains the room temperature in accordance with the Setting Temp.
Starting Current Control
• Indoor fan is delayed for 5 sec at the starting.
Indoor Fan Speed Control
• High, Med, Low, CHAOS
Operation indication Lamps (LED)
Signal Receptor
Receives the signals from the remote control.(Signal receiving sound: two short beeps or one long beep.)
Operation Indication Lamps
On/Off
: Lights up during the system operation.
Sleep Mode
: Lights up during Sleep Mode Auto operation.
Timer
: Lights up during Timer operation.
Defrost Mode
: Lights up during Defrost Mode or Hot Start operation.
Soft Dry Operation Mode
• Intermittent operation of fan at low speed.
Sleep Mode Auto Control
• The fan is switched to low(Cooling), med(Heating) speed.
• The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.
Defrost(Deice) control (Heating)
Natural Air Control by CHAOS Logic
• Both the indoor and outdoor fan stops during defrosting.
• The fan is switched to intermittent or irregular operation
• The fan speed is automatically switched from high to low speed.
Airflow Direction Control
• The louver can be set at the desired position or swing
up and down automatically.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 35 -
Hot-start Control (Heating)
• The indoor fan does not rotate until the
evaporator pipe temperature will be reached
at 28°C(82°F).
LGE Internal Use Only
Operation Details
2. Operation Details
Function of Controls
DISPLAY
1) High quality LCD remote controller supplied
Operation Indicator
• On while in appliance operation, off while in appliance pause
Timer Indicator
• On while in timer mode (on/off) and in sleep timer mode, off when timer mode is completed or canceled
Defrost Indicator
• Off except when hot start during heating mode operation or while in defrost control.
Plasma Indicator
• On while in plasma mode, off while plasma mode is canceled.
Auto restart Indicator
• On while auto restart mode, off while auto restart mode is canceled.
Auto restart
• In case the power comes on again after a power failure, Auto Restarting Operation is the function to operate
procedures automatically to the previous operating conditions.
If your want to use this operation, press the Auto Restart Button.
Power(Forced Operation)
• Operation starts, when this button is pressed and stops when you press the button again.
n Cooling Mode Operation
• When the intake air temperature reaches 0.5°C(33°F) below the setting temp, the compressor and the outdoor
fan stop.
• When it reaches 0.5°C(33°F) above the setting temp, they start to operate again.
Compressor ON Temp=> Setting Temp+0.5°C(33°F)
Compressor OFF Temp => Setting Temp-0.5°C(33°F)
• While in compressor running, operating with the airflow speed set by the remote controller. While in compressor not running, operating with the low airflow speed regardless of the setting.
n Healthy Dehumidification Mode
• When the dehumidification operation input by the remote controller is received, the intake air temperature is
detected and the setting temp is automatically set according to the intake air temperature.
26°C(78°F) ≤ Intake Air Temp
=> 25°C(76°F)
24°C(76°F) ≤ Intake Air Temp < 26°C(78°F) => Intake Air Temp-1°C(34°F)
18°C(64°F) ≤ Intake Air Temp < 24°C(76°F) => Intake Air Temp-0.5°C(33°F)
Intake Air Temp < 18°C(64°F)
=> 18°C(64°F)
• While in compressor off, the indoor fan repeats low airflow speed and pause.
• While the intake air temp is between compressor on temp. and compressor off temp., 10-min dehumidification
operation and 4-min compressor off repeat
Compressor ON Temp. => Setting Temp+0.5°C(33°F)
Compressor OFF Temp. => Setting Temp-0.5°C(33°F)
• In 10-min dehumidification operation, the indoor fan operates with the low airflow speed.
n Heating Mode Operation
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 36 -
LGE Internal Use Only
Operation Details
• When the intake air Temp. reaches Compressor OFF Temp., the compressor is turned off.
When the intake air Temp. reaches Compressor ON Temp., the compressor is turned on.
Themo ON Temp. => Setting Temp. +2˚C(36°F)
Themo OFF Temp. => Setting Temp.+4°C(39°F)
• While in compressor on, when above 38°C(100°F), it operates with setting airflow speed (while in sleep mode,
with the medium airflow speed).
• While in compressor off, the indoor fan is off when the indoor pipe temp is below 33°C (92°F), when above
35°C(94°F) , it operates with the low airflow speed.
• While in defrost control, both of the indoor and outdoor fans are turned off.
n Defrost Control
• While in heating mode operation in order to protect outdoor unit from freezing, reversed to cooling cycle to
defrost of the outdoor unit.
n Fuzzy Operation (Outdoor unit C/O Model)
• According to the temperature set by Fuzzy rule, when the intake air temp is 0.5°C(33°F) or more below the
setting temp, the compressor is turned off. When 0.5°C(33°F) or more above the setting temp, the compressor is turned on.
Compressor ON Temp => Setting Temp+0.5°C(33°F)
Compressor OFF Temp => Setting Temp+0.5°C(33°F)
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the
intake air temp at that time.
26°C(78°F) ≤ Intake Air Temp
=> 25°C(76°F)
24°C(76°F) ≤ Intake Air Temp < 26°C(78°F) => Intake Air Temp+1°C(34°F)
22°C(72°F) ≤ Intake Air Temp<24°C(76°F) => Intake Air Temp+0.5°C(33°F)
18°C(64°F) ≤ Intake Air Temp<22°C(72°F) => Intake Air Temp
Intake Air Temp<18°C(64°F)
=> 18°C(64°F)
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temperature
n Fuzzy Operation (Outdoor unit H/P Model)
• When any of operation mode is not selected like the moment of the power on or when 3 hrs has passed since
the operation off, the operation mode is selected.
• When determining the operation mode, the compressor, the outdoor fan, and the 4 way valve are off and only
the indoor fan is operated for 15 seconds. Then an operation mode is selected according to the intake air
temp at that moment as follows.
24°C(76°F) ≤ Inatake Air Temp
=> Fuzzy Operation for Cooling
21°C(70°F)≤ Inatake Air Temp<24°C(76°F) => Fuzzy Operation for Dehumidification
Inatake Air Temp<21°C(70°F)
=> Fuzzy Operation for Heating
• If any of the operation modes among cooling / dehumidification / heating mode operations is carried out for 10
sec or longer before Fuzzy operation, the mode before Fuzzy operation is operated.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 37 -
LGE Internal Use Only
Operation Details
1) Fuzzy Operation for Cooling
• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C(33°F) or more
below the setting temp, the compressor is turned off. When 0.5°C(33°F) or more above the setting temp, the
compressor is turned on.
Compressor ON Temp. => Setting Temp+0.5°C(33°F)
Compressor OFF Temp. => Setting Temp+0.5°C(33°F)
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the
intake air temp at that time.
26°C(78°F) ≤ Intake Air Temp
=> 25°C(76°F)
24°C(76°F) ≤ Intake Air Temp < 26°C(78°F) => Intake Air Temp+1°C(34°F)
22°C(72°F) ≤ Intake Air Temp<24°C(76°F) => Intake Air Temp+0.5°C(33°F)
18°C(64°F) ≤ Intake Air Temp<22°C(72°F) => Intake Air Temp
Intake Air Temp<18°C(64°F)
=> 18°C(64°F)
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temperature.
2) Fuzzy Operation for Dehumidification
• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C(33°F) or more
below the setting temp, the compressor is turned off. When 0.5°C(33°F) or more above the setting temp, the
compressor is turned on.
Compressor ON Temp. => Setting Temp+0.5°C(33°F)
Compressor OFF Temp. => Setting Temp+0.5°C(33°F)
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the
intake air temp at that time.
26°C(78°F) ≤ Intake Air Temp
=> 25°C(76°F)
24°C(76°F) ≤ Intake Air Temp < 26°C(78°F)=> Intake Air Temp+1°C(34°F)
22°C(72°F) ≤ Intake Air Temp<24°C(76°F) => Intake Air Temp+0.5°C(33°F)
18°C(64°F) ≤ Intake Air Temp<22°C(72°F) => Intake Air Temp
Intake Air Temp < 18°C(64°F)
=> 18°C(64°F)
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan repeats the low airflow speed or pause as in
dehumidification operation.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 38 -
LGE Internal Use Only
Operation Details
3) Fuzzy Operation for Heating
• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 3°C(37°F) or more
above the setting temp, the compressor is turned off. When below the setting temp, the compressor is
turned on.
Compressor ON Temp => Setting Temp + 2°C(36°F)
Compressor OFF Temp => Setting Temp + 4°C(39°F)
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to
the intake air temp at that time.
20°C(68°F) ≤ Intake Air Temp => Intake Air Temp + 0.5°C(33°F)
Intake Air Temp < 20°C(68°F) => 20°C(68°F)
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is set to the high or the medium according to
the intake air temperature and the setting temperature.
n Airflow Speed Selection
• The airflow speed of the indoor fan is set to high, medium, low, or chaos by the input of the airflow speed
selection key on the remote controller.
n On-Timer Operation
• When the set time is reached after the time is input by the remote controller, the appliance starts to operate.
• The timer LED is on when the on-timer is input. It is off when the time set by the timer is reached.
• If the appliance is operating at the time set by the timer, the operation continues.
n Off-Timer Operation
• When the set time is reached after the time is input by the remote controller, the appliance stops operating.
• The timer LED is on when the off-timer is input. It is off when the time set by the timer is reached.
• If the appliance is on pause at the time set by the timer, the pause continues.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 39 -
LGE Internal Use Only
Operation Details
n Off-Timer <=> On-Timer Operation
• When the set time is reached after the on/off time is input by the remote controller, the on/off-timer operation
is carried out according to the set time.
n Sleep Timer Operation
• When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is input by the remote controller while in
appliance operation, the operation of the appliance stops.
• While the appliance is on pause, the sleep timer mode cannot be input.
• While in cooling mode operation, 30 min later since the start of the sleep timer, the setting temperature
increases by 1°C(34°F) After another 30 min elapse, it increases by 1°C(34°) again.
• When the sleep timer mode is input while in cooling cycle mode, the airflow speed of the indoor fan is set to
the low.
• When the sleep timer mode is input while in heating cycle mode, the airflow speed of the indoor fan is set to
the medium.
n Chaos Swing Mode
• By the Chaos Swing key input, the vane automatically operates with the Chaos Swing or they are fixed to the
desired direction.
n Chaos Natural Wind Mode
• When the Chaos Natural Wind mode is selected and then operated, the high, medium, or low speed of the airflow mode is operated for 2~15 sec randomly by the Chaos Simulation.”
n Jet Cool Mode Operation (Outdoor unit C/O Model)
• If the Jet Cool key is input at any operation mode while in appliance operation, the Jet Cool mode operates.
• In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation.
• In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C(64°F).
• When the sleep timer mode is input while in the Jet Cool mode operation, the Jet Cool mode has the priority.
• When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and then
operated in order that the air outflow could reach further.
n Jet Cool Mode Operation (Outdoor unit H/P Model)
• While in heating mode or Fuzzy operation, the Jet Cool key cannot be input. When it is input while in the
other mode operation (cooling, dehumidification, ventilation), the Jet Cool mode is operated.”
• In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation.
• In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C(64°F).
• When the sleep timer mode is input while in the Jet Cool mode operation, the Jet Cool mode has the priority.
• When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and then
operated in order that the air outflow could reach further.
n Auto Restarting Operation
• When the power is restored after a sudden power failure while in appliance operation, the mode before the
power failure is kept on the memory and the appliance automatically operates in the mode on the memory.
• Operation Mode that is kept on the memory
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 40 -
LGE Internal Use Only
Operation Details
- State of Operation ON/OFF
- Operation Mode/Setting Temp/Selected Airflow Speed
- Sleep Timer Mode/Remaining Time of Sleep Timer (unit of hour)
n Forced Operation (Outdoor unit C/O Model)
• To operate the appliance by force in case that the remote controller is lost, the forced operation button is on
the main unit of the appliance to operate the appliance in the standard conditions.
• Press the forced operation button, the forced operation is carried out.
• Press the forced operation button once again to stop operation.
• The forced operation is carried out in cooling mode with the setting temperature 22°C(72°F) and the high
speed of airflow.
n Forced Operation (Outdoor unit H/P Model)
• To operate the appliance by force in case that the remote controller is lost, the forced operation selection
switch is on the main unit of the appliance to operate the appliance in the standard conditions.
• Press the forced operation button, the forced operation is carried out.
• Press the forced operation button once again to stop operation.
• In the forced operation mode, the indoor fan is operated at low speed for around 15 sec and then the operation
condition is set according to the intake air temperature as follows.
24°C(76°F) ≤ Intake Air Temp
=> Cooling Mode Operation, 22°C(72°F), High Speed
21°C(70°F) ≤ Intake Air Temp < 24°C(76°F) => Dehumidification Operation, 23°C(74°F), High Speed
Intake Air Temp < 21°C(70°F)
=> Heating Mode Operation, 24°C(76°F), High Speed
n Test Operation Control
• To check the condition of the installation when installing the appliance, the appliance is operated at cooling
mode, high speed of airflow, compressor-on for 18 min without controlling the room temperature.
• After supplying power to the main body, keep pressing the forced operation button for about 3 seconds.
• While in test operation, a key can be input by the remote controller.
When a key (operation start/stop, operation mode selection, airflow speed selection, temperature control, Jet
Cool) is input by the remote controller, the test operation is canceled and the appliance is operated according
to the setting by the remote controller.
n Protection of the evaporator pipe from frosting
• In the temperrature of the indoor pipe is below 0°C(32°F) after 7 minutes from starting the compressor, the
compressor and outdoor fan are stopped, and 3 minutes delay of operating of the compressor, when the temperature of the indoor pipe is over 7°C(45°F), the compressor and the outdoor fan are reoperated.
• Outdoor fan motor stops when indoor pipe temperature is blow 3°C(37°F) and restarts at the pipe temperature
above 6°C(43°F) or after 90 seconds, if the pipe temperature does not rise to 6°C(43°F), outdoor fan motor
runs continuously at even below 3°C(37°F).
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 41 -
LGE Internal Use Only
Operation Details
n Buzzer Sounding Operation
• When the appliance-operation key is input by the remote controller, the short “beep-beep-” sounds.
• When the appliance-pause key is input by the remote controller, the long “beep—” sounds.
n Air Cleaner Operation
• When an air cleaner function is selected during Air Conditioner operation
- Plasma air cleaner function will be operated while in any operation mode with selecting the function.
- The function is to be stopped while it is operating with selecting the function.
• When an air cleaner function is selected during operation off
- The function will be only operated.
• When inlet grille of air conditioner is opened during plasma operation, High Voltage Generator(H.V.B) is to be
stopped. When inlet grille of air conditioner is closed during plasma operation, High Voltage Generator(H.V.B)
will be operated again.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 42 -
LGE Internal Use Only
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 43 -
282(11-1/8)
169(5-5/8)
2
51(2-1/16)
1
LG Electronics USA, HVAC Division
1000 Sylvan Avenue, Englewood Cliffs, NJ 07632
www.lgusa.com / www.lghvac.com
567(22-3/8)
165(6-1/2)
W
265(10-1/2)
915(36)
H
D
282(11-1/8)
169
(5-5/8)
D
[Unit : mm(inch)]
[Unit : mm(inch)]
Descripition
282
(11-1/8)
H
CHASSIS CODE: SE
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
1. Unit should be installed in compliance with the installation manual
in the product box.
Note
Air suction grill
Air discharge grill
1
2
Name
915
(36)
ARNU073SE*2
ARNU093SE*2
ARNU123SE*2
ARNU153SE*2
Number
W
ARNU073SE*2
ARNU093SE*2
ARNU123SE*2
ARNU153SE*2
Model
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
www.lgeaircon.com
53(2-1/16)
ART COOL Mirror
Dimensions
3. Dimensions
LGE Internal Use Only
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
804
1107
1
72
58 122
2
281
93
3
200
53
4
10
63
Knockout hole
Installation plate
5
- 44 -
(unit : mm)
Remark
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
CHASSIS CODE: S8
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
1. Unit should be installed in compliance with the installation manual
in the product box.
Note
Air suction grille
4
Display & signal receiver
Front panel
Part Name
3
2
1
No.
ARNU18GS8*2
ARNU24GS8*2
ART COOL Mirror
Dimensions
LGE Internal Use Only
48
299
ArtCoolGallery
1. Functions ....................................................................................46
2. Operation Details........................................................................47
3. Dimensions .................................................................................54
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 45 -
LGE Internal Use Only
Functions
1. Functions
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
• Room temperature sensor. (THERMISTOR)
Room temperature control
• Maintains the room temperature in accordance with the Setting Temp.
Starting Current Control
• Indoor fan is delayed for 5 sec at the starting.
Indoor Fan Speed Control
• High, Med, Low, CHAOS
Operation indication Lamps (LED)
Signal Receptor
Receives the signals from the remote control.(Signal receiving sound: two short beeps or one long beep.)
Operation Indication Lamps
On/Off
: Lights up during the system operation.
Sleep Mode
: Lights up during Sleep Mode Auto operation.
Timer
: Lights up during Timer operation.
Defrost Mode
: Lights up during Defrost Mode or Hot Start operation.
Soft Dry Operation Mode
• Intermittent operation of fan at low speed.
Sleep Mode Auto Control
• The fan is switched to low(Cooling), med(Heating) speed.
• The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.
Defrost(Deice) control (Heating)
Natural Air Control by CHAOS Logic
• Both the indoor and outdoor fan stops during defrosting.
• The fan is switched to intermittent or irregular operation
• The fan speed is automatically switched from high to low speed.
Airflow Direction Control
• The louver can be set at the desired position or swing
up and down automatically.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 46 -
Hot-start Control (Heating)
• The indoor fan does not rotate until the
evaporator pipe temperature will be reached
at 28°C(82°F).
LGE Internal Use Only
Operation Details
2. Operation Details
Function of Controls
DISPLAY
1) High quality LCD remote controller supplied
Operation Indicator
• On while in appliance operation, off while in appliance pause
Timer Indicator
• On while in timer mode (on/off) and in sleep timer mode, off when timer mode is completed or canceled
Defrost Indicator
• Off except when hot start during heating mode operation or while in defrost control.
Plasma Indicator
• On while in plasma mode, off while plasma mode is canceled.
Auto restart Indicator
• On while auto restart mode, off while auto restart mode is canceled.
Auto restart
• In case the power comes on again after a power failure, Auto Restarting Operation is the function to operate
procedures automatically to the previous operating conditions.
If your want to use this operation, press the Auto Restart Button.
Power(Forced Operation)
• Operation starts, when this button is pressed and stops when you press the button again.
n Cooling Mode Operation
• When the intake air temperature reaches 0.5°C(33°F) below the setting temp, the compressor and the outdoor
fan stop.
• When it reaches 0.5°C(33°F) above the setting temp, they start to operate again.
Compressor ON Temp=> Setting Temp+0.5°C(33°F)
Compressor OFF Temp => Setting Temp-0.5°C(33°F)
• While in compressor running, operating with the airflow speed set by the remote controller. While in compressor not running, operating with the low airflow speed regardless of the setting.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 47 -
LGE Internal Use Only
Operation Details
n Healthy Dehumidification Mode
• When the dehumidification operation input by the remote controller is received, the intake air temperature is
detected and the setting temp is automatically set according to the intake air temperature.
26°C(78°F) ≤ Intake Air Temp
=> 25°C
24°C(76°F) ≤ Intake Air Temp < 26°C(78°F) => Intake Air Temp-1°C
18°C(64°F) ≤ Intake Air Temp < 24°C(76°F) => Intake Air Temp-0.5°C(33°F)
Intake Air Temp < 18°C(64°F)
=> 18°C(64°F)
• While in compressor off, the indoor fan repeats low airflow speed and pause.
• While the intake air temp is between compressor on temp. and compressor off temp., 10-min dehumidification
operation and 4-min compressor off repeat
Compressor ON Temp. => Setting Temp+0.5°C(33°F)
Compressor OFF Temp. => Setting Temp-0.5°C(33°F)
• In 10-min dehumidification operation, the indoor fan operates with the low airflow speed.
n Heating Mode Operation
• When the intake air Temp. reaches Compressor OFF Temp., the compressor is turned off.
When the intake air Temp. reaches Compressor ON Temp., the compressor is turned on.
Themo ON Temp. => Setting Temp. +2˚C(36°F)
Themo OFF Temp. => Setting Temp.+4°C(39°F)
• While in compressor on, when above 38°C(100°F), it operates with setting airflow speed (while in sleep mode,
with the medium airflow speed).
• While in compressor off, the indoor fan is off when the indoor pipe temp is below 33°C(92°F) , when above
35°C(94°F) , it operates with the low airflow speed.
• While in defrost control, both of the indoor and outdoor fans are turned off.
n Defrost Control
• While in heating mode operation in order to protect outdoor unit from freezing, reversed to cooling cycle to
defrost of the outdoor unit.
n Fuzzy Operation (Outdoor unit C/O Model)
• According to the temperature set by Fuzzy rule, when the intake air temp is 0.5°C(33°F) or more below the
setting temp, the compressor is turned off. When 0.5°C(33°F) or more above the setting temp, the compressor is turned on.
Compressor ON Temp => Setting Temp+0.5°C(33°F)
Compressor OFF Temp => Setting Temp+0.5°C(33°F)
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the
intake air temp at that time.
26°C(78°F) ≤ Intake Air Temp
=> 25°C(76°F)
24°C(76°F) ≤ Intake Air Temp<26°C(78°F) => Intake Air Temp+1°C(34°F)
22°C(72°F) ≤ Intake Air Temp<24°C(76°F) => Intake Air Temp+0.5°C(33°F)
18°C(64°F) ≤ Intake Air Temp<22°C(72°F) => Intake Air Temp
Intake Air Temp<18°C(64°F)
=> 18°C(64°F)
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temperCopyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 48 -
LGE Internal Use Only
Operation Details
ature
n Fuzzy Operation (Outdoor unit H/P Model)
• When any of operation mode is not selected like the moment of the power on or when 3 hrs has passed since
the operation off, the operation mode is selected.
• When determining the operation mode, the compressor, the outdoor fan, and the 4 way valve are off and only
the indoor fan is operated for 15 seconds. Then an operation mode is selected according to the intake air
temp at that moment as follows.
24°C(76°F) ≤ Inatake Air Temp
=> Fuzzy Operation for Cooling
21°C(70°F) ≤ Inatake Air Temp<24°C(76°F) => Fuzzy Operation for Dehumidification
Inatake Air Temp<21°C(70°F)
=> Fuzzy Operation for Heating
• If any of the operation modes among cooling / dehumidification / heating mode operations is carried out for 10
sec or longer before Fuzzy operation, the mode before Fuzzy operation is operated.
1) Fuzzy Operation for Cooling
• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C(33°F) or more
below the setting temp, the compressor is turned off. When 0.5°C(33°F) or more above the setting temp, the
compressor is turned on.
Compressor ON Temp => Setting Temp+0.5°C(33°F)
Compressor OFF Temp => Setting Temp+0.5°C(33°F)
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the
intake air temp at that time.
26°C(78°F) ≤ Intake Air Temp
=> 25°C(76°F)
24°C(76°F) ≤ Intake Air Temp<26°C(78°F) => Intake Air Temp+1°C(34°F)
22°C(72°F) ≤ Intake Air Temp<24°C(76°F) => Intake Air Temp+0.5°C(33°F)
18°C(64°F) ≤ Intake Air Temp<22°C(72°F) => Intake Air Temp
Intake Air Temp < 18°C(64°F)
=> 18°C(64°F)
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temperature.
2) Fuzzy Operation for Dehumidification
• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more below
the setting temp, the compressor is turned off. When 0.5°C(33°F) or more above the setting temp, the compressor is turned on.
Compressor ON Temp => Setting Temp+0.5°C(33°F)
Compressor OFF Temp => Setting Temp+0.5°C(33°F)
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 49 -
LGE Internal Use Only
Operation Details
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to
the intake air temp at that time.
26°C(78°F) ≤ Intake Air Temp
=> 25°C(76°F)
24°C(76°F) ≤ Intake Air Temp<26°C(78°F) => Intake Air Temp+1°C(34°F)
22°C(72°F) ≤ Intake Air Temp<24°C(76°F) => Intake Air Temp+0.5°C(33°F)
18°C(64°F) ≤ Intake Air Temp<22°C(72°F) => Intake Air Temp
Intake Air Temp < 18°C (64°F)
=> 18°C(64°F)
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan repeats the low airflow speed or pause as in
dehumidification operation.
3) Fuzzy Operation for Heating
• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 3°C(37°F) or more
above the setting temp, the compressor is turned off. When below the setting temp, the compressor is
turned on.
Compressor ON Temp => Setting Temp + 2°C(36°F)
Compressor OFF Temp => Setting Temp + 4°C(39°F)
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to
the intake air temp at that time.
20°C(68°F) ≤ Intake Air Temp => Intake Air Temp + 0.5°C(33°F)
Intake Air Temp < 20°C(68°F) => 20°C(68°F)
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is set to the high or the medium according to
the intake air temperature and the setting temperature.
n Airflow Speed Selection
• The airflow speed of the indoor fan is set to high, medium, low, or chaos by the input of the airflow speed
selection key on the remote controller.
n On-Timer Operation
• When the set time is reached after the time is input by the remote controller, the appliance starts to operate.
• The timer LED is on when the on-timer is input. It is off when the time set by the timer is reached.
• If the appliance is operating at the time set by the timer, the operation continues.
n Off-Timer Operation
• When the set time is reached after the time is input by the remote controller, the appliance stops operating.
• The timer LED is on when the off-timer is input. It is off when the time set by the timer is reached.
• If the appliance is on pause at the time set by the timer, the pause continues.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 50 -
LGE Internal Use Only
Operation Details
n Off-Timer <=> On-Timer Operation
• When the set time is reached after the on/off time is input by the remote controller, the on/off-timer operation
is carried out according to the set time.
n Sleep Timer Operation
• When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is input by the remote controller while in
appliance operation, the operation of the appliance stops.
• While the appliance is on pause, the sleep timer mode cannot be input.
• While in cooling mode operation, 30 min later since the start of the sleep timer, the setting temperature
increases by 1°C(34°F) After another 30 min elapse, it increases by 1°C(34°F) again.
• When the sleep timer mode is input while in cooling cycle mode, the airflow speed of the indoor fan is set to
the low.
• When the sleep timer mode is input while in heating cycle mode, the airflow speed of the indoor fan is set to
the medium.
n Chaos Swing Mode
• By the Chaos Swing key input, the vane automatically operates with the Chaos Swing or they are fixed to the
desired direction.
n Chaos Natural Wind Mode
• When the Chaos Natural Wind mode is selected and then operated, the high, medium, or low speed of the airflow mode is operated for 2~15 sec randomly by the Chaos Simulation.”
n Jet Cool Mode Operation (Outdoor unit C/O Model)
• If the Jet Cool key is input at any operation mode while in appliance operation, the Jet Cool mode operates.
• In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation.
• In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C(64°F)
• When the sleep timer mode is input while in the Jet Cool mode operation, the Jet Cool mode has the priority.
• When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and then
operated in order that the air outflow could reach further.
n Jet Cool Mode Operation (Outdoor unit H/P Model)
• While in heating mode or Fuzzy operation, the Jet Cool key cannot be input. When it is input while in the
other mode operation (cooling, dehumidification, ventilation), the Jet Cool mode is operated.”
• In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation.
• In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C(64°F)
• When the sleep timer mode is input while in the Jet Cool mode operation, the Jet Cool mode has the priority.
• When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and then
operated in order that the air outflow could reach further.
n Auto Restarting Operation
• When the power is restored after a sudden power failure while in appliance operation, the mode before the
power failure is kept on the memory and the appliance automatically operates in the mode on the memory.
• Operation Mode that is kept on the memory
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 51 -
LGE Internal Use Only
Operation Details
- State of Operation ON/OFF
- Operation Mode/Setting Temp/Selected Airflow Speed
- Sleep Timer Mode/Remaining Time of Sleep Timer (unit of hour)
n Forced Operation (Outdoor unit C/O Model)
• To operate the appliance by force in case that the remote controller is lost, the forced operation button is on
the main unit of the appliance to operate the appliance in the standard conditions.
• Press the forced operation button, the forced operation is carried out.
• Press the forced operation button once again to stop operation.
• The forced operation is carried out in cooling mode with the setting temperature 22°C(72°F) and the high
speed of airflow.
n Forced Operation (Outdoor unit H/P Model)
• To operate the appliance by force in case that the remote controller is lost, the forced operation selection
switch is on the main unit of the appliance to operate the appliance in the standard conditions.
• Press the forced operation button, the forced operation is carried out.
• Press the forced operation button once again to stop operation.
• In the forced operation mode, the indoor fan is operated at low speed for around 15 sec and then the operation
condition is set according to the intake air temperature as follows.
24°C(76°F) ≤ Intake Air Temp
=> Cooling Mode Operation, 22°C(72°F), High Speed
21°C(70°F) ≤ Intake Air Temp < 24°C(76°F) => Dehumidification Operation, 23°C(74°F), High Speed
Intake Air Temp < 21°C(70°F)
=> Heating Mode Operation, 24°C(76°F), High Speed
n Test Operation Control
• To check the condition of the installation when installing the appliance, the appliance is operated at cooling
mode, high speed of airflow, compressor-on for 18 min without controlling the room temperature.
• After supplying power to the main body, keep pressing the forced operation button for about 3 seconds.
• While in test operation, a key can be input by the remote controller.
When a key (operation start/stop, operation mode selection, airflow speed selection, temperature control, Jet
Cool) is input by the remote controller, the test operation is canceled and the appliance is operated according
to the setting by the remote controller.
n Protection of the evaporator pipe from frosting
• In the temperrature of the indoor pipe is below 0°C(32°F) after 7 minutes from starting the compressor, the
compressor and outdoor fan are stopped, and 3 minutes delay of operating of the compressor, when the temperature of the indoor pipe is over 7°C(45°F), the compressor and the outdoor fan are reoperated.
• Outdoor fan motor stops when indoor pipe temperature is blow 3°C(37°F) and restarts at the pipe temperature
above 6°C or after 90 seconds, if the pipe temperature does not rise to 6°C(43°F), outdoor fan motor runs continuously at even below 3°C(37°F).
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 52 -
LGE Internal Use Only
Operation Details
n Buzzer Sounding Operation
• When the appliance-operation key is input by the remote controller, the short “beep-beep-” sounds.
• When the appliance-pause key is input by the remote controller, the long “beep—” sounds.
n Air Cleaner Operation
• When an air cleaner function is selected during Air Conditioner operation
- Plasma air cleaner function will be operated while in any operation mode with selecting the function.
- The function is to be stopped while it is operating with selecting the function.
• When an air cleaner function is selected during operation off
- The function will be only operated.
• When inlet grille of air conditioner is opened during plasma operation, High Voltage Generator(H.V.B) is to be
stopped. When inlet grille of air conditioner is closed during plasma operation, High Voltage Generator(H.V.B)
will be operated again.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 53 -
LGE Internal Use Only
1
Fix Hole
2
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 54 1
Hanger Hole
H
D
LG Electronics USA, HVAC Division
1000 Sylvan Avenue, Englewood Cliffs, NJ 07632
www.lgusa.com / www.lghvac.com
500(19-5/8)
Pipe Hole
W
1
Air discharge grill
Air suction grill
1
2
[Unit : mm(inch)]
146
(5-11/16)
D
Descripition
600
(23-5/8)
H
[Unit : mm(inch)]
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
www.lgeaircon.com
CHASSIS CODE: SF
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
1. Unit should be installed in compliance with the installation manual
in the product box.
Note
Name
600
(23-5/8)
ARNU073SF*2
ARNU093SF*2
ARNU123SF*2
Number
W
Model
ARNU073SF*2
ARNU093SF*2
ARNU123SF*2
ART COOL Gallery
Dimensions
3. Dimensions
LGE Internal Use Only
525(20-5/8)
Ceiling Concealed Duct Type (Low static)
1. Funtions ......................................................................................56
2. Operation Details........................................................................57
3. Dimensions .................................................................................60
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 55 -
LGE Internal Use Only
Functions
1. Funtions
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
• Maintains the room temperature in accordance with the Setting Temperature.
Room temperature control
Starting Current Control
• Indoor fan is delayed for 5 seconds at the starting.
• High, Med, Low
Indoor Fan Speed Control
Soft Dry Operation Mode
Auto Restart
• Room temperature sensor. (Thermistor)
• Intermittent operation of fan at low speed.
• Although the air-conditioner is turned off by a power failure, it is restarted automatically previous operation mode after power supply.
Deice (defrost) control (Heating)
• Both the indoor and outdoor fan stops during defrosting.
• Hot start after defrost ends.
Hot-start Control (Heating)
• The indoor fan does not rotate until the evaporator piping
temperature reaches 25°C(76°F).
High head height Drain pump
• A standard drain-head height of up to 700mm(27-9/16inch)
is possible.
Central Control(Optional)
• It is operating individually or totally by central control function.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 56 -
LGE Internal Use Only
Operation Details
2. Operation Details
(1) The function of main control
n Soft-Dry Operation
• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of
already being set to the best speed for Dry Operation by microcontroller control.
n Cooling Mode Operation
• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote controller
and the operation diagram is as following.
Intake Air Temperature
Thermo. ON
(SET TEMPERATURE
+0.5°C(33°F))
Thermo. OFF
(SET TEMPERATURE
-0.5°C(33°F))
INDOOR FAN
COMPRESSOR
Indoor Unit mode
2TH (Remo.+Indoor)
Remo. Mode
More than
3 minutes
More than
3 minutes
Selecting
fan speed
Low
Selecting
fan speed
Low
Selecting
fan speed
ON
OFF
ON
OFF
ON
Thermal ON
ST+0.5
To be selected higher temperature
contrast Indoor Unit and Remo.
ST+0.5
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 57 -
Thermal OFF
ST-0.5
To be selected higher temperature
contrast Indoor Unit and Remo.
ST-0.5
LGE Internal Use Only
Operation Details
n Heating Mode Operation
The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Indoor unit
40°C(104°F)
Heat-Exchanger
temperature
T
ST
A
T LT
T Off
T On
Intake Air Temperature
3min
B Low fan during 10sec
Setting Temperature
+3°C(37°F)
(Thermal OFF)
Setting Temperature
(Thermal ON)
Minimum
3min
1min
Thermal
Indoor fan
OFF
OFF
ON
ON
Outdoor fan
Off Low Low
Setting
fan
spped
Setting
fan
spped
Low
4way valve
Low
1min
ON
ON
C
Off
Off
Setting
fan
spped
Low
ON
• Compressor-off interval : - A While the indoor Heat-Exchanger temperature is higher than 40°C(104°F), fan operates
at low speed, when it becomes lower than 40°C(104°F) fan stops.
- B For eluminating latent heat-loss, fan operates at low speed for 10 seconds periodically.
- C To be operated "Low" except initial Hotstart operation
High Static
Chassis
Low Static
BH
BG
BR
B1
B2
CE
Convertible
CF
VE
VJ
Hotstart On
T On
19°C(66°F)
19°C(66°F)
19°C(66°F)
19°C(66°F) 19°C(66°F) 19°C(66°F) 19°C(66°F)
26°C(78°F)
26°C(78°F)
Hotstart Off
T Off
22°C(72°F)
22°C(72°F)
22°C(72°F)
22°C(72°F) 22°C(72°F) 22°C(72°F) 22°C(72°F)
27°C(80°F)
27°C(80°F)
Low temperature T LT
25°C(76°F)
25°C(76°F)
25°C(76°F)
25°C(76°F) 25°C(76°F) 25°C(76°F) 25°C(76°F)
28°C(82°F)
28°C(82°F)
Setting Temperature T ST
27°C(80°F)
27°C(80°F)
27°C(80°F)
27°C(80°F) 27°C(80°F) 27°C(80°F) 27°C(80°F)
30°C(86°F)
30°C(86°F)
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 58 -
LGE Internal Use Only
Operation Details
n Hot-Start Control
• The indoor fan does not rotate until the indoor unit Hex-Exchanger temperature reaches 30°C(86°F).
• The operation diagram is as following.
Indoor unit
Heat-Exchanger
temperature
Hotstart Off
Hotstart On
1 min
1 min
Thermal
Outdoor fan
Indoor fan
ON
ON
Off
Low
Setting fan
speed
4way Valve
Off
Low
Setting fan
speed
ON
• Initial Hotstart On state
¿ Power Off ‡ On
¡ Operation Off ‡ On
¬ Cooling operation ‡ Heating operation
√ Defrost operation
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 59 -
LGE Internal Use Only
383(15-1/16)
18(3/4)
18(3/4)
154(6)
- 60 -
575(22-5/8)
190(7-7/16)
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
D
B
6
14(1/2) 161(6-5/16)
13(1/2)
277(10-7/8)
4
3
190(7-7/16)
65(2-1/2) 60(2-3/8)
LG Electronics USA, HVAC Division
1000 Sylvan Avenue, Englewood Cliffs, NJ 07632
www.lgusa.com / www.lghvac.com
A
C
5
216(8-1/2)
24(11/12)
2
1
Air discharge
5
Note
D
[Unit : mm(inch)]
Unit size(7k,9k,12k,18k):ø6.35(1/4)
Unit size(24k):ø9.52(3/8)
Unit size(7k,9k,12k,18k):ø12.7(1/2)
Unit size(24k):ø15.88(5/8)
Descripition
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
www.lgeaircon.com
CHASSIS CODE: B1/B2
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
1. Unit should be installed in compliance with the installation manual
in the product box.
Air suction
Power supply connection
4
Gas pipe connection
Drain pipe connection
2
3
6
C
1100
1008
1131
1072
(43-5/16) (39-11/16) (44-9/16) (42-3/16)
Liquid pipe connection
Name
B
820
794
856
728
(32-5/16) (28-11/16) (33-11/16) (31-5/16)
A
1
Number
ARNU183B2G2
ARNU243B2G2
ARNU073B1G2
ARNU093B1G2
ARNU123B1G2
ARNU153B1G2
[Unit : mm(inch)]
ARNU073B1G2
ARNU093B1G2
ARNU123B1G2
ARNU153B1G2
ARNU183B2G2
ARNU243B2G2
Ceiling Concealed Duct (Low Static)
Dimensions
3. Dimensions
LGE Internal Use Only
Ceiling Concealed Duct Type (Built in)
1. Funtions ......................................................................................62
2. Operation Details........................................................................63
3. Dimensions .................................................................................66
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 61 -
LGE Internal Use Only
Functions
1. Funtions
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
• Maintains the room temperature in accordance with the Setting Temperature.
Room temperature control
Starting Current Control
• Indoor fan is delayed for 5 seconds at the starting.
• High, Med, Low
Indoor Fan Speed Control
Soft Dry Operation Mode
Auto Restart
• Room temperature sensor. (Thermistor)
• Intermittent operation of fan at low speed.
• Although the air-conditioner is turned off by a power failure, it is restarted automatically previous operation mode after power supply.
Deice (defrost) control (Heating)
• Both the indoor and outdoor fan stops during defrosting.
• Hot start after defrost ends.
Hot-start Control (Heating)
• The indoor fan does not rotate until the evaporator piping
temperature reaches 25°C(76°F).
High head height Drain pump
• A standard drain-head height of up to 700mm(27-9/16inch)
is possible.
Central Control(Optional)
• It is operating individually or totally by central control function.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 62 -
LGE Internal Use Only
Operation Details
2. Operation Details
(1) The function of main control
n Soft-Dry Operation
• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of
already being set to the best speed for Dry Operation by microcontroller control.
n Cooling Mode Operation
• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote controller
and the operation diagram is as following.
Intake Air Temperature
Thermo. ON
(SET TEMPERATURE
+0.5°C(33°F))
Thermo. OFF
(SET TEMPERATURE
-0.5°C(33°F))
INDOOR FAN
COMPRESSOR
Indoor Unit mode
2TH (Remo.+Indoor)
Remo. Mode
More than
3 minutes
More than
3 minutes
Selecting
fan speed
Low
Selecting
fan speed
Low
Selecting
fan speed
ON
OFF
ON
OFF
ON
Thermal ON
ST+0.5
To be selected higher temperature
contrast Indoor Unit and Remo.
ST+0.5
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 63 -
Thermal OFF
ST-0.5
To be selected higher temperature
contrast Indoor Unit and Remo.
ST-0.5
LGE Internal Use Only
Operation Details
n Heating Mode Operation
The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Indoor unit
40°C(104°F)
Heat-Exchanger
temperature
T
ST
A
T LT
T Off
T On
Intake Air Temperature
3min
B Low fan during 10sec
Setting Temperature
+3°C(37°F)
(Thermal OFF)
Setting Temperature
(Thermal ON)
Minimum
3min
1min
Thermal
Indoor fan
OFF
OFF
ON
ON
Outdoor fan
Off Low Low
1min
Setting
fan
spped
Setting
fan
spped
Low
4way valve
Low
ON
ON
C
Off
Off
Low
Setting
fan
spped
ON
• Compressor-off interval : - A While the indoor Heat-Exchanger temperature is higher than 40°C(104°F), fan operates
at low speed, when it becomes lower than 40°C(104°F) fan stops.
- B For eluminating latent heat-loss, fan operates at low speed for 10 seconds periodically.
- C To be operated "Low" except initial Hotstart operation
High Static
Chassis
Low Static
BH
BG
BR
Hotstart On
T On
19°C(66°F)
19°C(66°F)
19°C(66°F)
Hotstart Off
T Off
22°C(72°F)
22°C(72°F)
Low temperature T LT
25°C(76°F)
Setting Temperature T ST
27°C(80°F)
VE
VJ
19°C(66°F) 19°C(66°F) 19°C(66°F) 19°C(66°F)
26°C(78°F)
26°C(78°F)
22°C(72°F)
22°C(72°F) 22°C(72°F) 22°C(72°F) 22°C(72°F)
27°C(80°F)
27°C(80°F)
25°C(76°F)
25°C(76°F)
25°C(76°F) 25°C(76°F) 25°C(76°F) 25°C(76°F)
28°C(82°F)
28°C(82°F)
27°C(80°F)
27°C(80°F)
27°C(80°F) 27°C(80°F) 27°C(80°F) 27°C(80°F)
30°C(86°F)
30°C(86°F)
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
B1
- 64 -
B2
CE
Convertible
CF
LGE Internal Use Only
Operation Details
n Hot-Start Control
• The indoor fan does not rotate until the indoor unit Hex-Exchanger temperature reaches 30°C(86°F).
• The operation diagram is as following.
Indoor unit
Heat-Exchanger
temperature
Hotstart Off
Hotstart On
1 min
1 min
Thermal
Outdoor fan
Indoor fan
ON
ON
Off
Low
Setting fan
speed
Off
Low
Setting fan
speed
ON
4way Valve
• Initial Hotstart On state
¿ Power Off ‡ On
¡ Operation Off ‡ On
¬ Cooling operation ‡ Heating operation
√ Defrost operation
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 65 -
LGE Internal Use Only
C_2
B_3
A_2
A_3
388(15-1/4)
C_3
B_2
A_1
B3/B4
618(24-5/16)
PBSC30
PBSC40
PBSGB30
PBSGB40
B_2
C_2
359(14-1/8) 56(2-3/16)
359(14-1/8) 56(2-3/16)
277(10-7/8)
6
1
3
24(11/12) 216(8-1/2)
4
190(7-7/16)
5
Air suction
Unit size(7k,9k,12k,18k):ø6.35(1/4)
Unit size(24k):ø9.52(3/8)
Unit size(7k,9k,12k,18k):ø12.7(1/2)
Unit size(24k):ø15.88(5/8)
Descripition
[Unit : mm(inch)]
CHASSIS CODE: B3/B4
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
1. Unit should be installed in compliance with the installation manual
in the product box.
Air discharge
6
Gas pipe connection
Drain pipe connection
Power supply connection
2
3
4
5
Liquid pipe connection
Name
1
Number
2
Note
65(2-1/2) 60(2-3/8)
ARNU073B3G2+PBSGB30(Accessory), PBSC30(Accessory)
ARNU093B3G2+PBSGB30(Accessory), PBSC30(Accessory)
ARNU123B3G2+PBSGB30(Accessory), PBSC30(Accessory)
ARNU153B3G2+PBSGB30(Accessory), PBSC30(Accessory)
ARNU183B4G2+PBSGB40(Accessory), PBSC40(Accessory)
ARNU243B4G2+PBSGB40(Accessory), PBSC40(Accessory)
Ceiling Concealed Duct (Built in)
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
www.lgeaircon.com
A_3
B_3
C_3
821(32-5/16) 274(10-11/16) 42~250(1-9/16~9-13/16)
1100(43-5/16) 274(10-11/16) 42~250(1-9/16~9-13/16)
A_2
910(35-13/16)
1188(46-13/16)
With Suction Grille
Btu/h
A_1
7,9,12k 820(32-5/16)
18,24k 1100(43-5/16)
388(15-1/4)
LG Electronics USA, HVAC Division
1000 Sylvan Avenue, Englewood Cliffs, NJ 07632
www.lgusa.com / www.lghvac.com
500(19-11/16)(Max)
- 66 With Suction Grille & Suction Canvas
190(7-7/16)
With Suction Grille
& Suction Canvas
575(22-5/8)
250(9-13/16)
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
190(7-7/16)
With Suction Grille
Dimensions
3. Dimensions
LGE Internal Use Only
Ceiling Concealed Duct Type (High Static)
1. Funtions ......................................................................................68
2. Operation Details........................................................................69
3. Dimensions .................................................................................72
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 67 -
LGE Internal Use Only
Funtion
1. Funtions
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
• Maintains the room temperature in accordance with the Setting Temperature.
Room temperature control
Starting Current Control
• Indoor fan is delayed for 5 seconds at the starting.
• High, Med, Low
Indoor Fan Speed Control
Soft Dry Operation Mode
Auto Restart
• Room temperature sensor. (Thermistor)
• Intermittent operation of fan at low speed.
• Although the air-conditioner is turned off by a power failure, it is restarted automatically previous operation mode after power supply.
Deice (defrost) control (Heating)
• Both the indoor and outdoor fan stops during defrosting.
• Hot start after defrost ends.
Hot-start Control (Heating)
• The indoor fan does not rotate until the evaporator piping
temperature reaches 25°C(76°F)
High head height Drain pump
• A standard drain-head height of up to 700mm(27-9/16inch)
is possible.
Central Control(Optional)
• It is operating individually or totally by central control function.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 68 -
LGE Internal Use Only
Operation Details
2. Operation Details
(1) The function of main control
n Soft-Dry Operation
• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of
already being set to the best speed for Dry Operation by microcontroller control.
n Cooling Mode Operation
• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote controller
and the operation diagram is as following.
Intake Air Temperature
Thermo. ON
(SET TEMPERATURE
+0.5°C(33°F))
Thermo. OFF
(SET TEMPERATURE
-0.5°C(33°F))
INDOOR FAN
COMPRESSOR
More than
3 minutes
More than
3 minutes
Selecting
fan speed
Low
Selecting
fan speed
Low
Selecting
fan speed
ON
OFF
ON
OFF
ON
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 69 -
LGE Internal Use Only
Operation Details
n Heating Mode Operation
The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Indoor unit
40°C(104°F)
Heat-Exchanger
temperature
T
ST
A
T LT
T Off
T On
Intake Air Temperature
3min
B Low fan during 10sec
Setting Temperature
+3°C(37°F)
(Thermal OFF)
Setting Temperature
(Thermal ON)
Minimum
3min
1min
Thermal
Indoor fan
OFF
OFF
ON
ON
Outdoor fan
Off Low Low
Setting
fan
spped
Setting
fan
spped
Low
4way valve
Low
1min
ON
ON
C
Off
Off
Setting
fan
spped
Low
ON
• Compressor-off interval : - A While the indoor Heat-Exchanger temperature is higher than 40°C(104°F), fan operates
at low speed, when it becomes lower than 40°C(104°F) fan stops.
- B For eluminating latent heat-loss, fan operates at low speed for 10 seconds periodically.
- C To be operated "Low" except initial Hotstart operation
High Static
Chassis
Low Static
BH
BG
BR
Hotstart On
T On
19°C(66°F)
19°C(66°F)
19°C(66°F)
Hotstart Off
T Off
22°C(72°F)
22°C(72°F)
Low temperature T LT
25°C(76°F)
Setting Temperature T ST
27°C(80°F)
VE
VJ
19°C(66°F) 19°C(66°F) 19°C(66°F) 19°C(66°F)
26°C(78°F)
26°C(78°F)
22°C(72°F)
22°C(72°F) 22°C(72°F) 22°C(72°F) 22°C(72°F)
27°C(80°F)
27°C(80°F)
25°C(76°F)
25°C(76°F)
25°C(76°F) 25°C(76°F) 25°C(76°F) 25°C(76°F)
28°C(82°F)
28°C(82°F)
27°C(80°F)
27°C(80°F)
27°C(80°F) 27°C(80°F) 27°C(80°F) 27°C(80°F)
30°C(86°F)
30°C(86°F)
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
B1
- 70 -
B2
CE
Convertible
CF
LGE Internal Use Only
Operation Details
n Hot-Start Control
• The indoor fan does not rotate until the indoor unit Hex-Exchanger temperature reaches 30°C(86°F).
• The operation diagram is as following.
Indoor unit
Heat-Exchanger
temperature
Hotstart Off
Hotstart On
1 min
1 min
Thermal
Outdoor fan
Indoor fan
ON
ON
Off
Low
Setting fan
speed
Off
Low
Setting fan
speed
ON
4way Valve
• Initial Hotstart On state
¿ Power Off ‡ On
¡ Operation Off ‡ On
¬ Cooling operation ‡ Heating operation
√ Defrost operation
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 71 -
LGE Internal Use Only
- 72 -
7.5
R3
/8)
60(2-3
47(1-7/8)
5
6
882(34-3/4)
212(8-3/8)
355(14)
450(17-11/16)
47(1-7/8)
65(2-9/16)
108(4-3/13)
30(1-3/16)
243(9-9/16) 119(4-11/16)
882(34-3/4)
750(29-1/2)
87(3-7/16)
932(36-11/16)
133(5-1/4)
LG Electronics USA, HVAC Division
1000 Sylvan Avenue, Englewood Cliffs, NJ 07632
www.lgusa.com / www.lghvac.com
243(9-9/16)
24(15/16)
64(2-1/2)
21(7/8)
49(15/16)
4
50(1-15/16)
1
2
100(3-15/16)
Air suction
6
[Unit : mm(inch)]
Unit size(7k,9k,12k,18k):ø6.35(1/4)
Unit size(24k):ø9.52(3/8)
Unit size(7k,9k,12k,18k):ø12.7(1/2)
Unit size(24k):ø15.88(5/8)
Descripition
CHASSIS CODE: BH
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
1. Unit should be installed in compliance with the installation manual
in the product box.
Note
Air discharge
5
3
Power supply connection
Gas pipe connection
Drain pipe connection
2
4
Liquid pipe connection
Name
1
Number
3
ARNU073BHA2
ARNU093BHA2
ARNU123BHA2
ARNU153BHA2
ARNU183BHA2
ARNU243BHA2
Ceiling Concealed Duct (High Static)
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
www.lgeaircon.com
260(10-1/4)
29(1-1/8)
51(2-1/16) 101(3-15/16)
31(1-3/13)
70(2-3/4)
123(4-13/16)
114(4-1/2)
260(10-1/4)
115(4-1/2)
165(6-7/13)
175(6-7/8) 20(3/4)
75(2-15/16)
355(14)
158(6-1/4)
450(17-11/16)
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
106 127(5)
(4-1/8)
48(1-7/8)
52(2-1/16)
140(5-9/16)
745(29-3/8)
Dimensions
3. Dimensions
LGE Internal Use Only
450(17-11/16)
224(8-7/8)
- 73 -
00
ø1
)
/8
60(2-3
152(5-7/8)
232(1-1/4)
49(15/16)
1,182(46-1/2)
232(1-1/4)
1,182(46-5/8)
830(32-11/16)
87(3-7/16)
1,230(48-7/16)
243(9-9/16)
232(1-1/4)
450(17-11/16)
75(2-15/16)
108(4-3/13)
29(1-3/8)
4
LG Electronics USA, HVAC Division
1000 Sylvan Avenue, Englewood Cliffs, NJ 07632
www.lgusa.com / www.lghvac.com
243(9-9/16)
5
6
115(4-1/2)
1
2
102(4)
220(8-5/8)
32(1-3/13)
Name
Power supply connection
Air discharge
Air suction
3
4
5
6
Unit size(28k,36k,42k):ø15.88(5/8)
Unit size(28k,36k,42k):ø9.52(3/8)
Descripition
[Unit : mm(inch)]
CHASSIS CODE: BG
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
1. Unit should be installed in compliance with the installation manual
in the product box.
Note
Gas pipe connection
Drain pipe connection
2
Liquid pipe connection
1
Number
3
ARNU283BGA2
ARNU363BGA2
ARNU423BGA2
Ceiling Concealed Duct (High Static)
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
www.lgeaircon.com
261(10-1/4)
51(2-1/16)
53(2-1/16) 47(1-7/8)
20(3/4)
224(8-7/8)
298(11-11/16)
50(1-15/16)
100(3-15/16)
23(15/16)
186(7-5/16)
450(17-11/16)
87(3-7/16) 355(14)
113(4-7/16) 158(6-1/4)
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
122(4-13/16)
165(6-7/13)
140(5-9/16)
1,043(41)
Dimensions
LGE Internal Use Only
R6
0
/8)
60(2-3
5
241(9-1/2)
50(1-15/16)
6
279(11)
279(11)
215(8-1/2)
114(4-7/16)
120(4-3/4)
1
90(3-9/16)
2
LG Electronics USA, HVAC Division
1000 Sylvan Avenue, Englewood Cliffs, NJ 07632
www.lgusa.com / www.lghvac.com
1,230(48-7/16)
241(9-1/2)
1,004(39-9/16)
118(4-5/8)
1,284(50-9/16)
1,230(48-7/16)
1,092(43)
135(5-5/16)
190(7-7/16)
260(10-1/4)
115(4-9/16)
83(3-1/4)
26(1)
101(3-15/16)
72(2-13/16)
3
[Unit : mm(inch)]
Unit size(48k):ø15.88(5/8)
Unit size(48k):ø9.52(3/8)
Descripition
CHASSIS CODE: BR
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
1. Unit should be installed in compliance with the installation manual
in the product box.
Note
Air suction
Air discharge
5
6
Drain pipe connection
Power supply connection
4
Gas pipe connection
3
Liquid pipe connection
2
Name
1
Number
ARNU483BRA2
Ceiling Concealed Duct (High Static)
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
www.lgeaircon.com
122(4-13/16)
198(7-3/4)
312(12-1/4)
380(15)
477(18-3/4)
56(2-3/16)
25(1)
303(12)
32(1-3/13)
140(5-9/16)
- 74 -
590(23-3/16)
590(23-3/16)
168(6-5/8)
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
185(7-1/4)
123(4-13/16)
221(8-3/4)
144(5-11/16)
4
Dimensions
LGE Internal Use Only
- 75 -
460(18-1/13)
460(18-1/13)
688(27)
20(3/4)
440(17-3/8)
318(12-7/13)
115(4-9/16)
4
LG Electronics USA, HVAC Division
1000 Sylvan Avenue, Englewood Cliffs, NJ 07632
www.lgusa.com / www.lghvac.com
1,562(61-1/2)
293(11-7/13) 329(12-15/16) 320(12-5/8) 329(12-15/16)
5
1,220(48)
1,622(63-11/13)
1,562(61-7/13)
6
1,396(54-15/16)
64(2-7/13)
560(22)
688(27)
30(1-3/16)
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
161 290(11-7/16)
(6-3/8)
18(3/4)
358(14)
109(4-1/4)
68(2-5/8)
58(2-1/4)
70(2-3/4)
122(4-7/8)
60(2-3/8)
99
Name
Air suction
6
[Unit : mm(inch)]
Unit size(96k):ø22.2(7/8)
Unit size(76k,96k):ø9.52(3/8)
Unit size(76k):ø19.05(3/4)
Descripition
CHASSIS CODE: B8
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
1. Unit should be installed in compliance with the installation manual
in the product box.
Note
Air discharge
Drain pipe connection
Power supply connection
Gas pipe connection
Liquid pipe connection
3
5
4
3
2
1
Number
)
-9/16
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
www.lgeaircon.com
1
(5
) 14 0
(3-7/8
120(4-3/4)
70(2-3/4)
2
URNU763B8A2
URNU963B8A2
Ceiling Concealed Duct (High Static)
Dimensions
LGE Internal Use Only
64(2-1/2)
Wall Mountedd Type
1. Functions ....................................................................................77
2. Operation Details........................................................................78
3. Dimensions .................................................................................85
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 76 -
LGE Internal Use Only
Functions
1. Functions
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
• Room temperature sensor. (THERMISTOR)
Room temperature control
• Maintains the room temperature in accordance with the Setting temperature
Starting Current Control
• Indoor fan is delayed for 5 sec at the starting.
Indoor Fan Speed Control
• High, Med, Low, CHAOS
Operation indication Lamps (LED)
Signal Receptor
Receives the signals from the remote control.(Signal receiving sound: two short beeps or one long beep.)
Operation Indication Lamps
On/Off
: Lights up during the system operation.
Sleep Mode
: Lights up during Sleep Mode Auto operation.
Timer
: Lights up during Timer operation.
Defrost Mode
: Lights up during Defrost Mode or Hot Start operation.
Temperature
: Indicate the setting temperature.
Soft Dry Operation Mode
• Intermittent
operation
of fan at low speed.
Sleep Mode
Auto Control
• The fan is switched to low(Cooling), med(Heating) speed.
• The
unit will
stopped
1, 2,Logic
3, 4, 5, 6, 7 hours.
Natural
Air be
Control
by after
CHAOS
• The fan is switched to intermittent or irregular operation
fan speed
is automatically
• The
Airflow
Direction
Control switched from high to low speed.
Defrost(Deice) control (Heating)
• Both the indoor and outdoor fan stops during defrosting.
Hot-start Control (Heating)
• The indoor fan does not rotate until the
evaporator pipe temperature will be reached
at 28°C(82°F).
• The louver can be set at the desired position or swing
up and down automatically.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 77 -
LGE Internal Use Only
Operation Details
2. Operation Details
Function of Controls
DISPLAY
(1) High quality LCD remote controller supplied
Operation Indicator
• On while in appliance operation, off while in appliance pause
Timer(on/off) and Sleep timer Indicator
• On while in timer mode (on/off) and in sleep timer mode, off when timer mode is completed or canceled
Defrost Indicator
• Off except when hot start during heating mode operation or while in defrost control.
Plasma Indicator
• On while in plasma mode, off while plasma mode is canceled.
Auto restart
• In case the power comes on again after a power failure, Auto Restarting Operation is the function to operate
procedures automatically to the previous operating conditions.
If your want to use this operation, press the Auto Restart Button.
Power(Forced Operation)
• Operation starts, when this button is pressed and stops when you press the button again.
n Cooling Mode Operation
• When the intake air temperature reaches 0.5°C(33°F) below the setting temp, the compressor and the outdoor
fan stop.
• When it reaches 0.5°C(33°F) above the setting temp, they start to operate again.
Compressor ON Temp=> Setting Temp+0.5°C(33°F)
Compressor OFF Temp => Setting Temp-0.5°C(33°F)
• While in compressor running, operating with the airflow speed set by the remote controller. While in compressor not running, operating with the low airflow speed regardless of the setting.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 78 -
LGE Internal Use Only
Operation Details
n Healthy Dehumidification Mode
• When the dehumidification operation input by the remote controller is received, the intake air temperature is
detected and the setting temp is automatically set according to the intake air temperature.
26°C(78°F) ≤ Intake Air Temp
=> 25°C(76°F)
24°C(76°F) ≤ Intake Air Temp < 26°C(78°F) => Intake Air Temp-1°C(34°F)
18°C(64°F) ≤ Intake Air Temp < 24°C(76°F) => Intake Air Temp-0.5°C(33°F)
Intake Air Temp < 18°C(64°F)
=> 18°C(64°F)
• While in compressor off, the indoor fan repeats low airflow speed and pause.
• While the intake air temp is between compressor on temp. and compressor off temp., 10-min dehumidification
operation and 4-min compressor off repeat
Compressor ON Temp. => Setting Temp+0.5°C(33°F)
Compressor OFF Temp. => Setting Temp-0.5°C(33°F)
• In 10-min dehumidification operation, the indoor fan operates with the low airflow speed.
n Heating Mode Operation
• When the intake air temp reaches +3°Cabove the setting temp, the compressor is turned off. When below the
setting temp, the compressor is turned on.
Thermo ON Temp. => Setting Temp. +2°C(36°F)
Thermo OFF Temp. => Setting Temp. +4°C(39°F)
• While in compressor on, when above 38°C(100°F) , it operates with or setting airflow speed (while in sleep
mode, with the medium airflow speed).
• While in compressor off, the indoor fan is off when the indoor pipe temp is below 33°C(92°F) , when above
35°C(94°F) , it operates with the low airflow speed.
• While in defrost control, both of the indoor and outdoor fans are turned off.
n Defrost Control
• While in heating mode operation in order to protect outdoor unit from freezing, reversed to cooling cycle to
defrost the outdoor unit.
n Fuzzy Operation (Outdoor unit C/O Model)
• According to the temperature set by Fuzzy rule, when the intake air temp is 0.5°C(33°F) or more below the setting temp, the compressor is turned off. When 0.5°C (33°F) or more above the setting temp, the compressor is
turned on.
Compressor ON Temp => Setting Temp+0.5°C(33°F)
Compressor OFF Temp => Setting Temp+0.5°C(33°F)
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the
intake air temp at that time.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 79 -
LGE Internal Use Only
Operation Details
26°C(78°F) ≤ Intake Air Temp
=> 25°C(76°F)
24°C(76°F) ≤ Intake Air Temp<26°C(78°F) => Intake Air Temp+1°C(34°F)
22°C(72°F) ≤ Intake Air Temp<24°C(76°F) => Intake Air Temp+0.5°C(33°F)
18°C(64°F) ≤ Intake Air Temp<22°C(72°F) => Intake Air Temp
Intake Air Temp<18°C(64°F)
=> 18°C(64°F)
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temperature
n Fuzzy Operation (Outdoor unit H/P Model)
• When any of operation mode is not selected like the moment of the power on or when 3 hrs has passed since
the operation off, the operation mode is selected.
• When determining the operation mode, the compressor, the outdoor fan, and the 4 way valve are off and only
the indoor fan is operated for 15 seconds. Then an operation mode is selected according to the intake air
temp at that moment as follows.
24°C(76°F) ≤ Inatake Air Temp
=> Fuzzy Operation for Cooling
21°C(70°F) ≤ Inatake Air Temp<24°C(76°F) => Fuzzy Operation for Dehumidification
Inatake Air Temp<21°C(70°F)
=> Fuzzy Operation for Heating
• If any of the operation modes among cooling / dehumidification / heating mode operations is carried out for 10
sec or longer before Fuzzy operation, the mode before Fuzzy operation is operated.
1) Fuzzy Operation for Cooling
• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C(33°F) or more
below the setting temp, the compressor is turned off. When 0.5°C(33°F) or more above the setting temp, the
compressor is turned on.
Compressor ON Temp => Setting Temp+0.5°C(33°F)
Compressor OFF Temp => Setting Temp+0.5°C(33°F)
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the
intake air temp at that time.
26°C(78°F) ≤ Intake Air Temp
=> 25°C(76°F)
24°C(76°F) ≤ Intake Air Temp<26°C(78°F) => Intake Air Temp+1°C(34°F)
22°C(72°F) ≤ Intake Air Temp<24°C(76°F) => Intake Air Temp+0.5°C(33°F)
18°C(64°F) ≤ Intake Air Temp<22°C(72°F)=> Intake Air Temp
Intake Air Temp < 18°C(64°F)
=> 18°C(64°F)
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temperature.
2) Fuzzy Operation for Dehumidification
• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C(33°F) or more
below the setting temp, the compressor is turned off. When 0.5°C(33°F) or more above the setting temp, the
compressor is turned on.
Compressor ON Temp => Setting Temp+0.5°C(33°F)
Compressor OFF Temp => Setting Temp+0.5°C(33°F)
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 80 -
LGE Internal Use Only
Operation Details
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the
intake air temp at that time.
26°C(78°F) ≤ Intake Air Temp
=> 25°C(76°F)
24°C(76°F) ≤ Intake Air Temp<26°C(78°F) => Intake Air Temp+1°C(34°F)
22°C(72°F) ≤ Intake Air Temp<24°C(76°F) => Intake Air Temp+0.5°C(33°F)
18°C(64°F) ≤ Intake Air Temp<22°C(72°F) => Intake Air Temp
Intake Air Temp < 18°C(64°F)
=> 18°C(64°F)
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan repeats the low airflow speed or pause as in
dehumidification operation.
3) Fuzzy Operation for Heating
• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 3°C(37°F) or more
above the setting temp, the compressor is turned off. When below the setting temp, the compressor is turned
on.
Compressor ON Temp => Setting Temp. +2°C(36°F)
Compressor OFF Temp => Setting Temp. +4°C(39°F)
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the
intake air temp at that time.
20°C(68°F) ≤ Intake Air Temp => Intake Air Temp + 0.5°C(33°F)
Intake Air Temp < 20°C(68°F) => 20°C(68°F)
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is set to the high or the medium according to the
intake air temperature and the setting temperature.
n Airflow Speed Selection
• The airflow speed of the indoor fan is set to high, medium, low, or chaos by the input of the airflow speed
selection key on the remote controller.
n On-Timer Operation
• When the set time is reached after the time is input by the remote controller, the appliance starts to operate.
• The timer LED is on when the on-timer is input. It is off when the time set by the timer is reached.
• If the appliance is operating at the time set by the timer, the operation continues.
n Off-Timer Operation
• When the set time is reached after the time is input by the remote controller, the appliance stops operating.
• The timer LED is on when the off-timer is input. It is off when the time set by the timer is reached.
• If the appliance is on pause at the time set by the timer, the pause continues.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 81 -
LGE Internal Use Only
Operation Details
n Off-Timer <=> On-Timer Operation
• When the set time is reached after the on/off time is input by the remote controller, the on/off-timer operation is
carried out according to the set time.
n Sleep Timer Operation
• When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is input by the remote controller while in
appliance operation, the operation of the appliance stops.
• While the appliance is on pause, the sleep timer mode cannot be input.
• While in cooling mode operation, 30 min later since the start of the sleep timer, the setting temperature
increases by 1°C(34°F) After another 30 min elapse, it increases by 1°C(34°F) again.
• When the sleep timer mode is input while in cooling cycle mode, the airflow speed of the indoor fan is set to
the low.
• When the sleep timer mode is input while in heating cycle mode, the airflow speed of the indoor fan is set to
the medium.
n Chaos Swing Mode
• By the Chaos Swing key input, the vane automatically operates with the Chaos Swing or they are fixed to the
desired direction.
n Chaos Natural Wind Mode
• When the Chaos Natural Wind mode is selected and then operated, the high, medium, or low speed of the airflow mode is operated for 2~15 sec randomly by the Chaos Simulation.”
n Jet Cool Mode Operation (Outdoor unit C/O Model)
• If the Jet Cool key is input at any operation mode while in appliance operation, the Jet Cool mode operates.
• In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation.
• In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C(64°F)
• When the sleep timer mode is input while in the Jet Cool mode operation, the Jet Cool mode has the priority.
• During the JET COOL function at any moment, the A/C starts to blow the cool air with side louvers closed at
extremely high speed for 30 minutes setting the room temp. automatically to 18°C.
n Jet Cool Mode Operation (Outdoor unit H/P Model)
• While in heating mode or Fuzzy operation, the Jet Cool key cannot be input. When it is input while in the other
mode operation (cooling, dehumidification, ventilation), the Jet Cool mode is operated.”
• In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation.
• In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C(64°F)
• When the sleep timer mode is input while in the Jet Cool mode operation, the Jet Cool mode has the priority.
• During the JET HEAT function at any moment, the A/C starts to blow the hot air with side louvers closed at
extremely high speed for 60 minutes setting the room temp. automatically to 30°C(86°F).
n Auto Restarting Operation
• When the power is restored after a sudden power failure while in appliance operation, the mode before the
power failure is kept on the memory and the appliance automatically operates in the mode on the memory.
• Operation Mode that is kept on the memory
- State of Operation ON/OFF
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 82 -
LGE Internal Use Only
Operation Details
- Operation Mode/Setting Temp/Selected Airflow Speed
- Sleep Timer Mode/Remaining Time of Sleep Timer (unit of hour)
n Forced Operation
• Operation procedures when the remote control can't be used.
• The operation will be started if the power button is pressed.
• If you want to stop operation, re-press the button.
Cooling Model
Operating mode
Indoor Fan Speed
Setting Temperature
Cooling
High
22°C(72°F)
Heat pump Model
Room Temp. ≥ 24°C(76°F) 21°C(70°F) ≤ Room Temp. < 24°C(76°F) Room Temp. < 21°C(70°F)
Cooling
Healthy Dehumidification
Heating
High
High
High
22°CC(72°F)
23°C(74°F)
24°C(76°F)
• While in forced operation, the key input by the remote control has no effect and the buzzer sounds 10 times to
indicate the forced operation.
n Test operation
• During the TEST OPERATION, the unit operates in cooling mode at high speed fan, regardless of room temperature and resets in 18±1 minutes.
• During test operation, if remote controller signal is received, the unit operates as remote controller sets.
If you want to use this operation, Press and hold ON/OFF button 3~5 seconds, then the buzzer sound 1 "beep".
• If you want to stop the operation, re-press the button.
n Protection of the evaporator pipe from frosting
• If the indoor pipe temp is below 0°C(32F) in 7 min. after the compressor operates without any pause while in
cooling cycle operation mode, the compressor and the outdoor fan are turned off in order to protect the indoor
evaporator pipe from frosting.
• When the indoor pipe temp is 7°C(45°F) or higher after 3 min. pause of the compressor, the compressor and
the outdoor fan is turned on according to the condition of the room temperature.
n Buzzer Sounding Operation
• When the appliance-operation key is input by the remote control, the short "beep-beep-" sounds.
• When the appliance-pause key is input by the remote control, the long "beep—" sounds.
• When a key is input by the remote control while the slide switch on the main unit of the appliance is on the
forced operation position, the error sound "beep-beep-beep-beep-beep-" is made 10 times to indicate that the
remote control signal cannot be received.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 83 -
LGE Internal Use Only
Operation Details
n Air Cleaner Operation
• When an air cleaner function is selected during Air Conditioner operation
- Plasma air cleaner function will be operated while in any operation mode with selecting the function.
- The function is to be stopped while it is operating with selecting the function.
• When an air cleaner function is selected during operation off
- The function will be only operated.
• When inlet grille of air conditioner is opened during plasma operation, High Voltage Generator(H.V.B) is to be
stopped. When inlet grille of air conditioner is closed during plasma operation, High Voltage Generator(H.V.B)
will be operated again.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 84 -
LGE Internal Use Only
PIPING/WIRING
DIRECTION
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 85 PIPE AND DRAIN DIMENSION
567
PIPING DIRECTION
PIPING/WIRING
DIRECTION
Descripition
(unit : mm)
165
D
(unit : mm)
Ø6.35 Flare connection
Ø12.7 Flare connection
External dia. Ø17
282
H
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
Higher than eye-level
More than 100 mm
※ Required space(unit:mm)
CHASSIS CODE: SE
More than 100 mm
Lower than 2.3m
More than 200 mm
Note
1. Unit should be installed in compliance with the installation manual
in the product box.
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
Name
Front panel
Air discharge
Air suction
Liquid pipe
Gas pipe
Drain pipe
Right side piping/wiring connection
Left side piping/wiring connection
1
2
3
4
5
6
7
8
895
ARNU07GSE*2
ARNU09GSE*2
ARNU12GSE*2
ARNU15GSE*2
Number
W
Model
ARNU07GSE*2
ARNU09GSE*2
ARNU12GSE*2
ARNU15GSE*2
Wall Mounted
Dimensions
3. Dimensions
LGE Internal Use Only
265
PIPING/WIRING
DIRECTION
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 86 PIPE AND DRAIN DIMENSION
804
PIPING DIRECTION
PIPING/WIRING
DIRECTION
Front panel
Air discharge
Air suction
Liquid pipe
Gas pipe
Drain pipe
Right side piping/wiring connection
Left side piping/wiring connection
1
2
3
4
5
6
7
8
Descripition
(unit : mm)
178
D
Ø6.35 Flare connection
Ø12.7 Flare connection
External dia. Ø17
300
H
(unit : mm)
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
Higher than eye-level
More than 100 mm
※ Required space(unit:mm)
CHASSIS CODE: S5
More than 100 mm
Lower than 2.3m
More than 200 mm
Note
1. Unit should be installed in compliance with the installation manual
in the product box.
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
Name
1090
ARNU18GS5*2
ARNU24GS5*2
Number
W
Model
ARNU18GS5*2
ARNU24GS5*2
Wall Mounted
Dimensions
LGE Internal Use Only
281
Ceiling & Floor
Ceiling Suspended
1. Funtions ......................................................................................88
2. Operation Details........................................................................89
3. Dimensions .................................................................................92
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 87 -
LGE Internal Use Only
Function
1. Function
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
• Maintains the room temperature in accordance with the Setting Temperature.
Room temperature control
Starting Current Control
• Indoor fan is delayed for 5 seconds at the starting.
• High, Med, Low
Indoor Fan Speed Control
Soft Dry Operation Mode
Auto Restart
• Room temperature sensor. (Thermistor)
• Intermittent operation of fan at low speed.
• Although the air-conditioner is turned off by a power failure, it is restarted automatically previous operation mode after power supply.
Deice (defrost) control (Heating)
• Both the indoor and outdoor fan stops during defrosting.
• Hot start after defrost ends.
Hot-start Control (Heating)
• The indoor fan does not rotate until the evaporator piping
temperature reaches 25°C(76°F).
High head height Drain pump
• A standard drain-head height of up to 700mm(27-9/16inch)
is possible.
Central Control(Optional)
• It is operating individually or totally by central control function.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 88 -
LGE Internal Use Only
Operation Details
2. Operation Details
(1) The function of main control
n Soft-Dry Operation
• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of
already being set to the best speed for Dry Operation by microcontroller control.
n Cooling Mode Operation
• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote controller
and the operation diagram is as following.
Intake Air Temperature
Thermo. ON
(SET TEMPERATURE
+0.5°C(33°F))
Thermo. OFF
(SET TEMPERATURE
-0.5°C(33°F))
INDOOR FAN
COMPRESSOR
Indoor Unit mode
2TH (Remo.+Indoor)
Remo. Mode
More than
3 minutes
More than
3 minutes
Selecting
fan speed
Low
Selecting
fan speed
Low
Selecting
fan speed
ON
OFF
ON
OFF
ON
Thermal ON
ST+0.5
To be selected higher temperature
contrast Indoor Unit and Remo.
ST+0.5
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 89 -
Thermal OFF
ST-0.5
To be selected higher temperature
contrast Indoor Unit and Remo.
ST-0.5
LGE Internal Use Only
Operation Details
n Heating Mode Operation
The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Indoor unit
40°C(104°F)
Heat-Exchanger
temperature
T
ST
A
T LT
T Off
T On
Intake Air Temperature
3min
B Low fan during 10sec
Setting Temperature
+3°C(37°F)
(Thermal OFF)
Setting Temperature
(Thermal ON)
Minimum
3min
1min
Thermal
OFF
OFF
ON
ON
Outdoor fan
Indoor fan
Off Low Low
Setting
fan
spped
Setting
fan
spped
Low
4way valve
Low
1min
ON
ON
C
Off
Off
Low
Setting
fan
spped
ON
• Compressor-off interval : - A While the indoor Heat-Exchanger temperature is higher than 40°C(104°F), fan operates
at low speed, when it becomes lower than 40°C(104°F) fan stops.
- B For eluminating latent heat-loss, fan operates at low speed for 10 seconds periodically.
- C To be operated "Low" except initial Hotstart operation
High Static
Chassis
Low Static
VE
VJ
19°C(66°F) 19°C(66°F) 19°C(66°F) 19°C(66°F)
26°C(78°F)
26°C(78°F)
22°C(72°F)
22°C(72°F) 22°C(72°F) 22°C(72°F) 22°C(72°F)
27°C(80°F)
27°C(80°F)
25°C(76°F)
25°C(76°F)
25°C(76°F) 25°C(76°F) 25°C(76°F) 25°C(76°F)
28°C(82°F)
28°C(82°F)
27°C(80°F)
27°C(80°F)
27°C(80°F) 27°C(80°F) 27°C(80°F) 27°C(80°F)
30°C(86°F)
30°C(86°F)
BH
BG
BR
Hotstart On
T On
19°C(66°F)
19°C(66°F)
19°C(66°F)
Hotstart Off
T Off
22°C(72°F)
22°C(72°F)
Low temperature T LT
25°C(76°F)
Setting Temperature T ST
27°C(80°F)
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
B1
- 90 -
B2
CE
Convertible
CF
LGE Internal Use Only
Operation Details
n Hot-Start Control
• The indoor fan does not rotate until the indoor unit Hex-Exchanger temperature reaches 30°C(86°F).
• The operation diagram is as following.
Indoor unit
Heat-Exchanger
temperature
Hotstart Off
Hotstart On
1 min
1 min
Thermal
Outdoor fan
Indoor fan
ON
ON
Off
Low
Setting fan
speed
Off
Low
Setting fan
speed
ON
4way Valve
• Initial Hotstart On state
¿ Power Off ‡ On
¡ Operation Off ‡ On
¬ Cooling operation ‡ Heating operation
√ Defrost operation
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 91 -
LGE Internal Use Only
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
587
Liquid pipe
Gas pipe
Suction gille
Discharge grille
Suspension bracket
Right side drain hose hole
Left side drain hose hole
Wiring connection
Piping connection
Signal receiver & Operation indicator
1
2
3
4
- 92 -
Slit hole
Slit hole
More than 200mm
CHASSIS CODE: VE
More than 50mm
More than 200mm
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
More than 50mm
More than 200mm
※ Required space(unit:mm)
More than 200mm
(unit : mm)
200
D
(unit : mm)
Descripition
ø6.35 Flare connection
ø12.7 Flare connection
490
H
Note
1. Unit should be installed in compliance with the installation manual
in the product box.
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
5
6
7
8
9
10
Name
900
ARNU09GVEA2
ARNU12GVEA2
Number
W
Model
ARNU09GVEA2
ARNU12GVEA2
Ceiling & Floor
Dimensions
3. Dimensions
LGE Internal Use Only
273
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 93 -
(unit : mm)
220
D
(unit : mm)
Slit hole
Slit hole
Slit hole
Slit hole
Descripition
ø6.35 Flare connection
ø12.7 Flare connection
650
H
CHASSIS CODE: VJ
More than 300mm
More than 700Um
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
More than 700mm
※ Required space(unit:mm)
Note
1. Unit should be installed in compliance with the installation manual
in the product box.
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
5
6
7
8
9
10
11
Name
Liquid pipe
Gas pipe
Suction gille
Discharge grille
Suspension bracket
Right side drain hose hole
Left side drain hose hole
Wiring connection
Piping connection
Right side drain pipe connection
Left side drain pipe connection
1
2
3
4
950
ARNU18GVJA2
ARNU24GVJA2
Number
W
Model
ARNU18GVJA2
ARNU24GVJA2
Ceiling Suspended
Dimensions
LGE Internal Use Only
Floor Standing Type
1. Function ......................................................................................95
2. Operation Details........................................................................96
3. Dimensions .................................................................................99
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 94 -
LGE Internal Use Only
Function
1. Function
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
• Maintains the room temperature in accordance with the Setting Temperature.
Room temperature control
Starting Current Control
• Indoor fan is delayed for 5 seconds at the starting.
• High, Med, Low
Indoor Fan Speed Control
Soft Dry Operation Mode
Auto Restart
• Room temperature sensor. (Thermistor)
• Intermittent operation of fan at low speed.
• Although the air-conditioner is turned off by a power failure, it is restarted automatically previous operation mode after power supply.
Deice (defrost) control (Heating)
• Both the indoor and outdoor fan stops during defrosting.
• Hot start after defrost ends.
Hot-start Control (Heating)
• The indoor fan does not rotate until the evaporator piping
temperature reaches 25°C(76°F).
High head height Drain pump
• A standard drain-head height of up to 700mm(27-9/16inch)
is possible.
Central Control(Optional)
• It is operating individually or totally by central control function.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 95 -
LGE Internal Use Only
Operation Details
2. Operation Details
(1) The function of main control
n Soft-Dry Operation
• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of
already being set to the best speed for Dry Operation by microcontroller control.
n Cooling Mode Operation
• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote controller
and the operation diagram is as following.
Intake Air Temperature
Thermo. ON
(SET TEMPERATURE
+0.5°C(33°F))
Thermo. OFF
(SET TEMPERATURE
-0.5°C(33°F))
INDOOR FAN
COMPRESSOR
Indoor Unit mode
2TH (Remo.+Indoor)
Remo. Mode
More than
3 minutes
More than
3 minutes
Selecting
fan speed
Low
Selecting
fan speed
Low
Selecting
fan speed
ON
OFF
ON
OFF
ON
Thermal ON
ST+0.5
To be selected higher temperature
contrast Indoor Unit and Remo.
ST+0.5
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 96 -
Thermal OFF
ST-0.5
To be selected higher temperature
contrast Indoor Unit and Remo.
ST-0.5
LGE Internal Use Only
Operation Details
n Heating Mode Operation
The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Indoor unit
40°C(104°F)
Heat-Exchanger
temperature
T
ST
A
T LT
T Off
T On
Intake Air Temperature
3min
B Low fan during 10sec
Setting Temperature
+3°C(37°F)
(Thermal OFF)
Setting Temperature
(Thermal ON)
Minimum
3min
1min
Thermal
Indoor fan
OFF
OFF
ON
ON
Outdoor fan
Off Low Low
1min
Setting
fan
spped
Setting
fan
spped
Low
4way valve
Low
ON
ON
C
Off
Off
Low
Setting
fan
spped
ON
• Compressor-off interval : - A While the indoor Heat-Exchanger temperature is higher than 40°C(104°F), fan operates
at low speed, when it becomes lower than 40°C(104°F) fan stops.
- B For eluminating latent heat-loss, fan operates at low speed for 10 seconds periodically.
- C To be operated "Low" except initial Hotstart operation
High Static
Chassis
Low Static
VE
VJ
19°C(66°F) 19°C(66°F) 19°C(66°F) 19°C(66°F)
26°C(78°F)
26°C(78°F)
22°C(72°F)
22°C(72°F) 22°C(72°F) 22°C(72°F) 22°C(72°F)
27°C(80°F)
27°C(80°F)
25°C(76°F)
25°C(76°F)
25°C(76°F) 25°C(76°F) 25°C(76°F) 25°C(76°F)
28°C(82°F)
28°C(82°F)
27°C(80°F)
27°C(80°F)
27°C(80°F) 27°C(80°F) 27°C(80°F) 27°C(80°F)
30°C(86°F)
30°C(86°F)
BH
BG
BR
Hotstart On
T On
19°C(66°F)
19°C(66°F)
19°C(66°F)
Hotstart Off
T Off
22°C(72°F)
22°C(72°F)
Low temperature T LT
25°C(76°F)
Setting Temperature T ST
27°C(80°F)
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
B1
- 97 -
B2
CE
Convertible
CF
LGE Internal Use Only
Operation Details
n Hot-Start Control
• The indoor fan does not rotate until the indoor unit Hex-Exchanger temperature reaches 30°C(86°F).
• The operation diagram is as following.
Indoor unit
Heat-Exchanger
temperature
Hotstart Off
Hotstart On
1 min
1 min
Thermal
Outdoor fan
Indoor fan
ON
ON
Off
Low
Setting fan
speed
4way Valve
Off
Low
Setting fan
speed
ON
• Initial Hotstart On state
¿ Power Off ‡ On
¡ Operation Off ‡ On
¬ Cooling operation ‡ Heating operation
√ Defrost operation
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 98 -
LGE Internal Use Only
- 99 -
148.3
(5-13/16)
13(1/2)
148.3
(5-13/16)
1
635(25)
49(15/16)
190(7-7/16)
161(6-5/16)
203(7-15/16)
LG Electronics USA, HVAC Division
1000 Sylvan Avenue, Englewood Cliffs, NJ 07632
www.lgusa.com / www.lghvac.com
<Without Case>
978(38-1/2)
794(31-5/16)
<With Case> 2
1067(42)
70(2-3/4)
20.4(3/4)
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
6.28
(1/4)
1067(42)
14(1/2)
Air suction grill
1
2
[Unit : mm(inch)]
190
(7-7/16)
203
(7-15/16)
D
Descripition
639
(31-1/4)
635
(25)
H
[Unit : mm(inch)]
ARNU073CEU2
ARNU093CEU2
ARNU123CEU2
ARNU153CEU2
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
www.lgeaircon.com
CHASSIS CODE: CE
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
Note
1. Unit should be installed in compliance with the installation manual
in the product box.
Name
Air discharge grill
Number
978
(38-1/2)
1067
(42)
ARNU073CEU2
ARNU093CEU2
ARNU123CEU2
ARNU153CEU2
W
Model
ARNU073CEA2
ARNU093CEA2
ARNU123CEA2
ARNU153CEA2
ARNU073CEA2
ARNU093CEA2
ARNU123CEA2
ARNU153CEA2
Floor Standing
Dimensions
3. Dimensions
LGE Internal Use Only
639(31-1/4)
21.4(1-3/16)
639(31-1/4)
- 100 -
148.3
(5-13/16)
70
(2-3/4)
2
49.5(1-15/16)
109.8(4-5/16)
30(1-3/16)
148.3
(5-13/16)
1
190(7-7/16)
161(6-5/16) 14(1/2)
203(7-15/16)
LG Electronics USA, HVAC Division
1000 Sylvan Avenue, Englewood Cliffs, NJ 07632
www.lgusa.com / www.lghvac.com
<Without Case>
1256(49-7/16
1098(43-1/4)
1072(42-3/16)
<With Case>
1048.4(41-1/4)
1345(52-15/16)
203
(7-15/16)
635(25)
70(2-3/4)
81.4(3-3/16)
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
145
(5-11/16)
Air suction grill
2
(unit : mm)
190
(7-7/16)
203
(7-15/16)
D
Descripition
639
(31-1/4)
635
(25)
H
[Unit : mm(inch)]
ARNU183CFU2
ARNU243CFU2
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
www.lgeaircon.com
CHASSIS CODE: CF
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
1. Unit should be installed in compliance with the installation manual
in the product box.
Note
Air discharge grill
1
1256
(49-7/16)
ARNU183CFU2
ARNU243CFU2
Name
1345
(52-15/16)
ARNU183CFA2
ARNU243CFA2
Number
W
Model
ARNU183CFA2
ARNU243CFA2
Floor Standing
Dimensions
LGE Internal Use Only
Vertical Air Handling Unit
1. Funtions ....................................................................................102
2. Operation Details......................................................................103
3. Dimensions ...............................................................................107
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 101 -
LGE Internal Use Only
Funtions
1. Funtions
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Indoor Fan Speed Control
Soft Dry Operation Mode
Auto Restart
• Room temperature sensor. (Thermistor)
• Maintains the room temperature in accordance with the Setting Temperature.
• Indoor fan is delayed for 5 seconds at the starting.
• High, Med, Low
• Intermittent operation of fan at low speed.
• Although the air-conditioner is turned off by a power failure, it is restarted automatically previous operation mode after power supply.
Deice (defrost) control (Heating)
• Both the indoor and outdoor fan stops during defrosting.
• Hot start after defrost ends.
• If the electric heater has been installed, indoor fan continuous
will be.
Hot-start Control (Heating)
• The indoor fan does not rotate until the evaporator piping
temperature reaches 25°C(76°F)
Central Control(Optional)
• It is operating individually or totally by central control function.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 102 -
LGE Internal Use Only
Operation Details
2. Operation Details
(1) The function of main control
n Soft-Dry Operation
• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of
already being set to the best speed for Dry Operation by microcontroller control.
n Cooling Mode Operation
• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote controller
and the operation diagram is as following.
Intake Air Temperature
Thermo. ON
(SET TEMPERATURE
+0.5°C(33°F))
Thermo. OFF
(SET TEMPERATURE
-0.5°C(33°F))
INDOOR FAN
COMPRESSOR
More than
3 minutes
More than
3 minutes
Selecting
fan speed
Low
Selecting
fan speed
Low
Selecting
fan speed
ON
OFF
ON
OFF
ON
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 103 -
LGE Internal Use Only
Operation Details
n Heating Mode Operation
The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Indoor unit
40C(104F)
Heat-Exchanger
temperature
T ST
A
T LT
T Off
T On
Intake Air Temperature
3min
Setting Temperature
+3C(37F)
(Thermal OFF)
B Low fan during 10sec
Setting Temperature
(Thermal ON)
Minimum
3min
1min
Thermal
ON
ON
Outdoor fan
Indoor fan
OFF
OFF
Setting
fan
spped
Off Low Low
Low
4way valve
Setting
fan
spped
Low
C
Off
Off
1min
ON
ON
Low
Setting
fan
spped
ON
• Compressor-off interval : - A While the indoor Heat-Exchanger temperature is higher than 40C(104F), fan operates
at low speed, when it becomes lower than 40C(104F) fan stops.
- B For eluminating latent heat-loss, fan operates at low speed for 10 seconds periodically.
- C To be operated "Low" except initial Hotstart operation
Vertical Air Handling Unit
Chassis
NJ
NK
Hotstart On
T On
19°C(66°F)
19°C(66°F)
Hotstart Off
T Off
22°C(72°F)
22°C(72°F)
Low temperature T LT
25°C(76°F)
25°C(76°F)
Setting Temperature T ST
27°C(80°F)
27°C(80°F)
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 104 -
LGE Internal Use Only
Operation Details
n Hot-Start Control
• The indoor fan does not rotate until the indoor unit Hex-Exchanger temperature reaches 22℃(71.6℉).
• The operation diagram is as following.
Indoor unit
Heat-Exchanger
temperature
Hotstart Off
Hotstart On
1 min
1 min
Thermal
Outdoor fan
Indoor fan
ON
ON
Off
Setting fan
speed
Low
Off
Low
Setting fan
speed
ON
4way Valve
• Initial Hotstart On state
¿ Power Off ‡ On
¡ Operation Off ‡ On
¬ Cooling operation ‡ Heating operation
√ Defrost operation
High Static
Chassis
Low Static
BH
BG
BR
B1
B2
CE
Convertible
CF
VE
VJ
Hotstart On
T On
19°C(66°F)
19°C(66°F)
19°C(66°F)
19°C(66°F) 19°C(66°F) 19°C(66°F) 19°C(66°F)
26°C(78°F)
26°C(78°F)
Hotstart Off
T Off
22°C(72°F)
22°C(72°F)
22°C(72°F)
22°C(72°F) 22°C(72°F) 22°C(72°F) 22°C(72°F)
27°C(80°F)
27°C(80°F)
Low temperature T LT
25°C(76°F)
25°C(76°F)
25°C(76°F)
25°C(76°F) 25°C(76°F) 25°C(76°F) 25°C(76°F)
28°C(82°F)
28°C(82°F)
Setting Temperature T ST
27°C(80°F)
27°C(80°F)
27°C(80°F)
27°C(80°F) 27°C(80°F) 27°C(80°F) 27°C(80°F)
30°C(86°F)
30°C(86°F)
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 105 -
LGE Internal Use Only
Operation Details
n Heater Operation
• The unit will operate according to the setting temperature and the indoor unit Heat-Exchanger temperature.
• Heater operation diagram is shown as following.
Setting temperature (A)
A-1℃ (34℉)
A-2℃ (36℉)
Heater OFF
Heater ON
Heater ON
Indoor unit
Heat-Exchanger
temperature 45℃ (113℉)
42℃ (108℉)
30℃ (86℉)
28℃ (82℉)
Heater 2
Heater 1
ON
ON
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
OFF
OFF
- 106 -
ON
ON
LGE Internal Use Only
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 107 -
5
308(12-1/8)
40(1-9/16)
543(21-3/8)
4
1
65
(2-9/16)
1236(48-5/8)
364(14-5/16)
117.5(4-5/8)
2
LG Electronics USA, HVAC Division
1000 Sylvan Avenue, Englewood Cliffs, NJ 07632
www.lgusa.com / www.lghvac.com
46(1-13/16)
41(1-5/8) 40
254(10)
331(13)
40(1-9/16)
3
Power supply connection
Air discharge
Air suction
4
5
6
[Unit : mm(inch)]
Unit size(18k):ø6.35(1/4)
Unit size(24k,30k):ø9.52(3/8)
Unit size(18k):ø12.7(1/2)
Unit size(24k,30k):ø15.88(5/8)
Descripition
CHASSIS CODE: NJ
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
1. Unit should be installed in compliance with the installation manual
in the product box.
Note
Gas pipe connection
Drain pipe connection
3
Liquid pipe connection
2
1
Name
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
www.lgeaircon.com
6
Number
ARNU183NJA2
ARNU243NJA2
ARNU303NJA2
ARNU363NJA2
Vertical Air Handling Unit
Dimensions
3. Dimensions
LGE Internal Use Only
432(17)
457(18)
308
(12-1/8)
540
(21-1/4)
40
(1-9/16)
49
(1-15/16)
52
(2-1/16)
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
55
(2-3/16)
- 108 -
40
(1-9/16)
1418
(55-13/16)
1400
(55-1/8)
LG Electronics USA, HVAC Division
1000 Sylvan Avenue, Englewood Cliffs, NJ 07632
www.lgusa.com / www.lghvac.com
5
41
(1-5/8)
4
65
(2-9/16)
2
1
6
3
Name
Air discharge
4
5
Descripition
Unit size(28k,36k,42k):ø15.88(5/8)
Unit size(28k,36k,42k):ø9.52(3/8)
CHASSIS CODE: NK
2. Unit shall be grounded in accordance with the local regulations or
applicable national codes.
1. Unit should be installed in compliance with the installation manual
in the product box.
Note
Air suction
Power supply connection
3
6
Gas pipe connection
Drain pipe connection
2
Liquid pipe connection
[Unit : mm(inch)]
ARNU423NKA2
ARNU483NKA2
ARNU543NKA2
1
Number
118
(4-5/8)
508
(20)
76, Seongsan-dong, Changwon City, Gyeongnam,
641-713, Korea
www.lgeaircon.com
362
(14-1/4)
39
(1-9/16)
40
(1-9/16)
430
(16-15/16)
Vertical Air Handling Unit
Dimensions
LGE Internal Use Only
610
(24)
635
(25)
Part 3
Trouble shooting guide
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 109 -
LGE Internal Use Only
Trouble shooting guide
Self-diagnosis function ...................................................................111
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 110 -
LGE Internal Use Only
Self-diagnosis function
Self-diagnosis function
Self-Diagnosis Function
Error Indicator
• This function indicates types of failure in self-diagnosis and occurrence of failure for air condition.
• Error mark is displayed on display window of indoor units and wired remote controller, and 7-segment LED of
outdoor unit control board as shown in the table.
• If more than two troubles occur simultaneously, lower number of error code is first displayed.
• After error occurrence, if error is released, error LED is also released simultaneously.
Error Display
1st,2nd LED of 7-segment indicates error number, 3rd LED indicates unit number.
Ex) 211 : No.21 error of master unit
213 : No.21 error of slave2
011 ’ 051 : No.105 error of master unit
Indoor unit related error
Display
Title
Cause of Error
0
1
-
Air temperature sensor of indoor unit
Air temperature sensor of indoor unit is open or short
0
2
-
Inlet pipe temperature sensor of indoor unit
Inlet pipe temperature sensor of indoor unit is open or short
0
3
-
Transmission error : wired remote controller
↔indoor unit
Failing to receive wired remote controller signal in indoor unit PCB
0
4
-
Drain pump
Malfunction of drain pump
0
5
-
Transmission error : outdoor unit ↔indoor unit
Failing to receive outdoor unit signal in indoor unit PCB
0
6
-
Outlet pipe temperature sensor of indoor unit
Outlet pipe temperature sensor of indoor unit is open or short
0
7
-
Different operation mode
Operation mode between indoor unit and outdoor unit is different
0
9
-
Serial No.
In case when the serial number marked onEEPROM of Indoor unit is 0 or
FFFFFF
1
0
-
Poor fan motor operation
Disconnecting the fan motor connector/Failure of indoor fan motor lock
Air temperature sensor of indoor unit is open or short
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 111 -
LGE Internal Use Only
Self-diagnosis function
Error
No.
Error Type
Error Point
01
Indoor unit air sensor error
02
Indoor unit pipe inlet sensor error
06
Indoor unit pipe outlet sensor error
Indoor unit sensor is
open/short
Main Reasons
1. Indoor unit PCB wrong connection
2. Indoor unit PCB failure
3. Sensor problem (main reason)
n Error diagnosis and countermeasure flow chart
Is sensor properly
connected to PCB?
No
Connect properly to PCB
Yes
Is the resistance value
of sensor normal?*
No
Change the sensor
Yes
Change the PCB
** In case the value is more than 100kΩ (open) or less than 100Ω (short), Error occurs
Refer: Resistance value maybe change according to temperature of temp sensor,
It shows according to criteria of current temperature(±5% margin) ‘ Normal
Air temp sensor: 10°C(50°F) = 20.7kΩ : 25°C(76°F)= 10kΩ : 50°C(122°F)= 3.4kΩ
Pipe temp sensor: 10°C(50°F) = 10kΩ : 25°C(76°F)= 5kΩ : 50°C(122°F)= 1.8kΩ
CN_PIPE/OUT: Pipe outlet temp sensor
CN_PIPE/IN: Pipe inlet temp sensor
CN_ROOM: Indoor air temp sensor
<Fresh Air Intake Unit>
Measure the resistance of outlet pipe temp sensor.
<Standard Indoor Unit>
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 112 -
LGE Internal Use Only
Self-diagnosis function
Error
No.
03
Error Type
No transmission between cabled
remote controller & indoor unit
Error Point
Main Reasons
1. Remote controller fault
The remote controller
did not receive the sig- 2. Indoor unit PCB fault
nal from indoor unit
3. Connector fault, Wrong connection
during specific time
4. transmission cable problem
n Error diagnosis and countermeasure flow chart
Does the error happens
again if the remote
controller is replaced?*
No
Replace cabled remote
controller
Yes
Does the error occurred
when the cable of remote
controller is replaced?
No
Check connection &
transmission cable **
Yes
Replace indoor unit PCB ***
* If there is no remote controller to replace : Use another unitʼs remote controller doing well
** Check cable : Contact failure of connected portion or extension of cable are main cause
Check any surrounded noise ( check the distance with main power cable)
‘ make safe distance from the devices generate electromagnetic wave
*** After replacing indoor unit PCB, do Auto Addressing & input unitʼs address if connected to central controller.
(All the indoor units connected should be turned on before Auto Addressing
CN-REMO : Remote controller connection
The PCB can differ from model to model.
Check from the right source.
Checking transmission cable connection status
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 113 -
LGE Internal Use Only
Self-diagnosis function
Error
No.
04
Error Type
Error Point
Main Reasons
Float switch is open due to 1. Drain pump/float switch fault
rising of condensate water 2. Improper drain pipe location, cloglevel because of drain
ging of drain pipe
pump fault or drain pipe
3. Indoor unit PCB fault
clogging
Drain pump error
Error diagnosis and countermeasure flow chart
Is the drain pan filled
half with condensate
water? (half level of
float switch)*
No
Is Float switch short
On measuring its
resistance?
No
Replace float switch
Yes
Yes
Replace Indoor PCB or
reconnect the connector
Is drain pump working?
(Sound/drain noise/
contact etc.)
No
In indoor unit PCB
Does the terminal voltage
for drain pump has
208/230V output?**
Yes
No
Replace indoor unit PCB
Yes
Replace Drain Pump
Drain pump blocked by
foreign particles?
Yes
Remove it & clean the pump
* If the float goes up higher than a half of float
switch then the circuit is open & the unit is
stopped automatically.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 114 -
LGE Internal Use Only
Self-diagnosis function
float
*** Indoor PCB drain pump connector
A:Point to check rotating
(Check input of 208/230V)
(Marked as CN-DPUMP)
Float switch connector
Float switch Housing (CN-FLOAT)
[***] Standard of drain pipe head height / slope
MAX 450
700mm(27-9/16inch)
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 115 -
LGE Internal Use Only
Self-diagnosis function
Error
No.
05
Error Type
Error Point
Main Reasons
1. Auto addressing is not done
2. transmission cable is not connected
3. Short circuit of transmission cable
4. Indoor unit transmission circuit fault
No signal transmission
between indoor & outdoor 5. Outdoor unit transmission circuit fault
6. Not enough distance between power and transunits.
mission cable?
Indoor & Outdoor unit
transmission error
n Error diagnosis and countermeasure flow chart
Does all the IDUs show
same error code CH05?
No
Is total number of indoor
units connected displayed
after auto addressing?
No
Replace the PCB of indoor unit
displayed error
Re-connect after check the
transmission cable of indoor
unit displayed error**
Yes
END
Is outdoor PCB LED
blinking?
Check the main power
supply at the ODU
terminal block?
No
No
Replace outdoor PCB after
checking
Replace TRANS after checking
Yes
Yes
No
Is main circuit breaker off?
Yes
Check the insulation of inverter
/ constant compressor and replace
if required
Check the capacity of main circuit
breaker and replace if required
Improper connection of power supply cable
Main power supply problem
Check if the
transmission cable is
properly connected
to indoor / outdoor
terminal block?*
Yes
No
If all ok,
Turn on main circuit breaker
Re connect transmission cable
Outdoor PCB fault
Replace after checking
Indoor PCB fault
Replace after checking
* (Note1) Transmission from IDU is normal if voltage
fluctuation(-9V ~ +9V) exists when checking DC voltage
of communication terminal between IDU and ODU
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
* If the DC voltage between transmission terminal A, B
of indoor unit is fluctuate within (-9V~+9V) then
transmission from outdoor unit is normal
- 116 -
LGE Internal Use Only
Self-diagnosis function
Error
No.
Error Type
Error Point
Indoor unit outlet pipe
temperature sensor
error
06
Error
No.
Error Type
Refer to CH02
Indoor unit outlet pipe
temperature sensor open
or short
Error Point
All Indoor units are not
running in same mode
07
Main Reasons
The Indoor units started
later are operated in different mode from earlier
one.
Main Reasons
1. Indoor units are in different mode
2. PCB fault
3. cabled remote controller fault
j Checking ch07 method
IDU doesnʼt operate as Operation mode is
flickering at IDU wired remote controller and IDU
display window.
n Error diagnosis and countermeasure flow chart
Is operation mode of
outdoor & Indoor units
same?
No
Yes
Does error code
disappear
after set operation
mode same?**
No
Replace Indoor PCB***
Yes
END
Adjust outdoor main PCB
dip switch setting *
* Check mode selection setting of wired remote controller.
** Outdoor main PCB dip switch no.5 (Cooling) or no.6 (heating) is in On, different mode operation error
may occur because the operation mode is fixed by dip switch setting.
© Dip switch Setting ©
ON
1
1
ON
2
2
3
3
4
4
5
5
6
6
7
7
ON
1
1
1
8
2 3 4 5 6 7
9 10 11 12 13 14
ON
2
2
3
3
4
4
5
5
6
6
7
7
1
8
2 3 4 5 6 7
9 10 11 12 13 14
*** Dissolution method CH07 with remote controller
1) Error removal method : Turn off remote controller by pressing the On/Off button on the cabled remote controller.
The error code will be removed automatically after few seconds.
With cableless remote controller: Turn off indoor unit, and then turn on by changing the operation
mode. The error will disappear.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 117 -
LGE Internal Use Only
Self-diagnosis function
**** After replacing the indoor unit PCB, make sure to be done to do Auto addressing and input the address of central control
***** If ODU Dry Contact function is set , different mode operation error may be occurred because the operation mode is fixed.
Error
No.
09
Error Type
Error Point
Main Reasons
1. Error developed in transmission between the
micro- processor and the EEPROM on the surface of the PCB.
2. ERROR due to the EEPROM damage
Indoor unit EEPROM
error
n Error diagnosis and countermeasure flow chart
- Replace the indoor unit PCB, and then make sure to perform Auto addressing and input the address of central control
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 118 -
LGE Internal Use Only
Self-diagnosis function
Error
No.
10
Error Type
Indoor unit BLDC fan motor
failure
Error Point
Main Reasons
Indoor BLDC fan motor
feedback signal is absent
(for 50 sec.)
1. Motor connector connection fault
2. Indoor PCB fault
3. Motor fault
n Error diagnosis and countermeasure flow chart
Is connector
connection proper?
No
Connect properly
Yes
No
Is fan motor
normal?*
Replace indoor unit fan motor
Yes
Replace indoor unit PCB **
* It is normal when check hall sensor of indoor fan motor as shown below
Each termainl with the tester
Tester
1
4 5 6 7
+
-
1
4
5
4
6
4
7
4
Normal resistance(±10%)
TH chassis
TD chassis
hundreds kΩ
hundreds kkΩ
hundreds kΩ
hundreds kΩ
<Checking connection state of fan motor connector>
** Replace the indoor unit PCB, and then make sure to do Auto addressing and input the
address of central control
(Notice: The connection of motor connector to PCB should be done under no power
supplying to PCB)
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 119 -
LGE Internal Use Only
P/NO : MFL50459505
NOVEMBER, 2010