Download Mitsubishi PEFY-P24NMSU-E Service manual

2005
Air-Conditioners For Building Application
TECHNICAL & SERVICE MANUAL
Series PEFY Ceiling Concealed
<Indoor unit>
Models
PEFY-P15NMHU-E,PEFY-P18NMHU-E
PEFY-P24NMHU-E,PEFY-P27NMHU-E
PEFY-P30NMHU-E,PEFY-P36NMHU-E
PEFY-P48NMHU-E,PEFY-P54NMHU-E
PEFY-P72NMHU-E,PEFY-P96NMHU-E
CONTENTS
SAFETY PRECAUTIONS ·························1
1. FEATURES ···········································3
2. PART NAMES AND FUNCTIONS ········4
3. SPECIFICATION ···································6
4. OUTLINES AND DIMENSIONS············8
5. WIRING DIAGRAM ·····························10
6. REFRIGERANT SYSTEM DIAGRAM ····12
7. TROUBLE SHOOTING ·······················13
8. DISASSEMBLY PROCEDURE ···········16
INDOOR UNIT
For use with the R410A & R22
SAFETY PRECAUTIONS
1.
Before installation and electric work
s Before installing the unit, make sure you read all the
“Safety precautions”.
s The “Safety precautions” provide very important
points regarding safety. Make sure you follow them.
•
•
•
s This equipment may cause the adverse effect on the
same supply system.
s Please report to or take consent by the supply authority before connection to the system.
•
•
Symbols used in the text
Warning:
Describes precautions that should be observed to prevent danger
of injury or death to the user.
Caution:
Describes precautions that should be observed to prevent damage
to the unit.
Symbols used in the illustrations
•
•
•
: Indicates an action that must be avoided.
: Indicates that important instructions must be followed.
: Indicates a part which must be grounded.
•
: Indicates that caution should be taken with rotating parts. (This
symbol is displayed on the main unit label.) <Color: Yellow>
: Beware of electric shock (This symbol is displayed on the main
unit label.) <Color: Yellow>
Warning:
•
Carefully read the labels affixed to the main unit.
Warning:
•
•
•
•
•
1
Ask the dealer or an authorized technician to install the air conditioner.
- Improper installation by the user may result in water leakage, electric shock, or fire.
Install the air unit at a place that can withstand its weight.
- Inadequate strength may cause the unit to fall down, resulting in
injuries.
Use the specified cables for wiring. Make the connections securely so that the outside force of the cable is not applied to the
terminals.
- Inadequate connection and fastening may generate heat and cause
a fire.
Prepare for typhoons and other strong winds and earthquakes
and install the unit at the specified place.
- Improper installation may cause the unit to topple and result in
injury.
Always use an air cleaner, humidifier, electric heater, and other
accessories specified by Mitsubishi Electric.
- Ask an authorized technician to install the accessories. Improper
installation by the user may result in water leakage, electric shock,
or fire.
•
•
•
•
Never repair the unit. If the air conditioner must be repaired,
consult the dealer.
- If the unit is repaired improperly, water leakage, electric shock, or
fire may result.
Do not touch the heat exchanger fins.
- Improper handling may result in injury.
If refrigerant gas leaks during installation work, ventilate the
room.
- If the refrigerant gas comes into contact with a flame, poisonous
gases will be released.
Install the air conditioner according to this Installation Manual.
- If the unit is installed improperly, water leakage, electric shock, or
fire may result.
Have all electric work done by a licensed electrician according
to “Electric Facility Engineering Standard” and “Interior Wire
Regulations”and the instructions given in this manual and always use a special circuit.
- If the power source capacity is inadequate or electric work is performed improperly, electric shock and fire may result.
Keep the electric parts away from water (washing water etc.).
- It might result in electric shock, catching fire or smoke.
Securely install the cover of control box and the panel.
- If the cover and panel are not installed properly,dust or water may
enter the outdoor unit and fire or electric shock may result.
When installing and moving the air conditioner to another site,
do not charge the it with a refrigerant different from the refrigerant specified on the unit.
- If a different refrigerant or air is mixed with the original refrigerant,
the refrigerant cycle may malfunction and the unit may be damaged.
If the air conditioner is installed in a small room, measures
must be taken to prevent the refrigerant concentration from
exceeding the safety limit even if the refrigerant should leak.
- Consult the dealer regarding the appropriate measures to prevent the safety limit from being exceeded. Should the refrigerant
leak and cause the safety limit to be exceeded, hazards due to
lack of oxygen in the room could result.
When moving and reinstalling the air conditioner, consult the
dealer or an authorized technician.
- If the air conditioner is installed improperly, water leakage, electric shock, or fire may result.
After completing installation work, make sure that refrigerant
gas is not leaking.
- If the refrigerant gas leaks and is exposed to a fan heater, stove,
oven, or other heat source, it may generate noxious gases.
Do not reconstruct or change the settings of the protection
devices.
- If the pressure switch, thermal switch, or other protection device
is shorted and operated forcibly, or parts other than those specified
by Mitsubishi Electric are used, fire or explosion may result.
To dispose of this product, consult your dealer.
Do not use a leak detection additive.
2.
Warning:
•
Note the following when building a heater in the air
conditioning system.
- Leave enough space between units for proper ventilation so that
the indoor unit temperature does not exceed 40˚C when
windless.
- Keep the heater clean, and take appropriate measures so that
the indoor unit does not suck in the dust particles that
accumulate on the heater.
- Use the optional heater cable (PAC-YU24HT) to perform an
interlocked operation with indoor units.
- Do not build a heater inside the indoor unit.
Caution:
•
•
Recommended circuit
Wiring diagram
88H
FS1
H1
88H
FS2
FS1
H2
R
1-phase power
supply
S
208V, 230V/60Hz
R
S
•
FS2
26H
•
88H
Control board
CN24
•
FS1, 2 ----- Thermal fuse
H1, H2 ----- Heater
26H --------- Overheat protection
thermostat
Precautions for devices that use
R410A refrigerant
•
88H --------- Electromagnetic contactor
•
•
•
•
Do not use the existing refrigerant piping.
- The old refrigerant and refrigerator oil in the existing piping contains a large amount of chlorine which may cause the refrigerator
oil of the new unit to deteriorate.
Use refrigerant piping made of C1220 (Cu-DHP) phosphorus
deoxidized copper as specified in the *JIS H3300 “Copper and
copper alloy seamless pipes and tubes”. In addition, be sure
that the inner and outer surfaces of the pipes are clean and
free of hazardous sulphur, oxides, dust/dirt, shaving particles,
oils, moisture, or any other contaminant.
- Contaminants on the inside of the refrigerant piping may cause
the refrigerant residual oil to deteriorate.
*JIS: Japanese Industrial Standard
Store the piping to be used during installation indoors and keep
both ends of the piping sealed until just before brazing. (Store
elbows and other joints in a plastic bag.)
- If dust, dirt, or water enters the refrigerant cycle, deterioration of
the oil and compressor trouble may result.
Use ester oil, ether oil or alkylbenzene (small amount) as the
refrigerator oil to coat flares and flange connections.
- The refrigerator oil will degrade if it is mixed with a large amount of
mineral oil.
Use liquid refrigerant to fill the system.
- If gas refrigerant is used to seal the system, the composition of
the refrigerant in the cylinder will change and performance may
drop.
Do not use a refrigerant other than R410A.
- If another refrigerant (R22, etc.) is used, the chlorine in the refrigerant may cause the refrigerator oil to deteriorate.
Use a vacuum pump with a reverse flow check valve.
- The vacuum pump oil may flow back into the refrigerant cycle and
cause the refrigerator oil to deteriorate.
Do not use the following tools that are used with conventional
refrigerants.
(Gauge manifold, charge hose, gas leak detector, reverse flow
check valve, refrigerant charge base, vacuum gauge, refrigerant recovery equipment)
- If the conventional refrigerant and refrigerator oil are mixed in the
R410A , the refrigerant may deteriorated.
- If water is mixed in the R410A , the refrigerator oil may deteriorate.
- Since R410A does not contain any chlorine, gas leak detectors
for conventional refrigerants will not react to it.
Do not use a charging cylinder.
- Using a charging cylinder may cause the refrigerant to deteriorate.
Be especially careful when managing the tools.
- If dust, dirt, or water gets in the refrigerant cycle, the refrigerant
may deteriorate.
2
1
FEATURES
Series PEFY Ceiling Concealed
Indoor unit
Models
3
Cooling capacity/Heating capacity
kW
BTU / h
PEFY-P15NMHU-E
4.4 / 5.0
15000 / 17000
PEFY-P18NMHU-E
5.3 / 5.9
18000 / 20000
PEFY-P24NMHU-E
7.0 / 7.9
24000 / 27000
PEFY-P27NMHU-E
7.9 / 8.8
27000 / 30000
PEFY-P30NMHU-E
8.8 / 10.0
30000 / 34000
PEFY-P36NMHU-E
10.6 / 11.7
36000 / 40000
PEFY-P48NMHU-E
14.1 / 15.8
48000 / 54000
PEFY-P54NMHU-E
15.8 / 17.6
54000 / 60000
PEFY-P72NMHU-E
21.1 / 23.4
72000 / 80000
PEFY-P96NMHU-E
28.1 / 31.7
96000 / 108000
2
PART NAMES AND FUNCTIONS
● Indoor (Main) Unit
Air outlet
Air inlet
● Remote controller
[PAR-21MAA]
● Once the controls are set, the same operation mode can
be repeated by simply pressing the ON/OFF button.
[Operation buttons]
1
TEMP.
ON/OFF
2
MENU
3
BACK
PAR-21MAA
MONITOR/SET
ON/OFF
FILTER
DAY
CLOCK
CHECK TEST
OPERATION
B
7
A
0
CLEAR
C
D
1 [Set Temperature] Button
2 [Timer Menu] Button
[Monitor/Set] Button
3 [Mode] Button
[Return] Button
4 [Timer On/Off] Button
[Set Day] Button
4 5 68
5 [Louver] Button
[Operation] Button
6 [Fan Speed] Button
7 [Airflow Up/Down] Button
8 [Ventilation] Button
[Operation] Button
9 [Check/Clear] Button
9
0 [Test run] Button
A [Filter] Button
[
] Button
B [ON/OFF] Button
C Position of built-in room temperature
D [Set Time] Button
• Never expose the remote controller to direct sunlight. Doing so can result in the erroneous measurement of room temperature.
• Never place any obstacle around the lower right-hand section of the remote controller. Doing so can
result in the erroneous measurement of room temperature.
4
[Display]
A
CENTRALLY CONTROLLED
E
ON
ERROR CODE
C
NOT AVAILABLE
TEMP.
G
5
C
C
STAND BY
DEFROST
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
1Hr.
OFF
CLOCK
CHECK
B
P
Current time/Timer
Centralized control
Timer OFF
Timer indicator
Operation mode: COOL, DRY,
“Locked” indicator
Set temperature
Power ON
Louver
Ventilation
Filter sign
Set effective for 1 hr.
Sensor position
Room temperature
Airflow
Fan speed
FILTER
CHECK MODE
TEST RUN
FUNCTION
ON/OFF
O L I N HQ J
AUTO,
FAN,
D
HEAT
M
F
K
SPECIFICATION
3
3-1. Specification
PEFY-P-NMHU-E
Item
Power sourse
Model
Cooling
Capacity
*1
Heating
Height
Dimension
Width
Depth
Net weight
Airflow rate
(Low-High)
External static
pressure *3
FAN
Noise level
(Low-High) *2
Filter
kW
BTU/h
kW
BTU/h
mm
in
mm
in
mm
in
kg
lb
m3/min
cfm
208V
Pa
230V
208V
dB(A)
230V
PEFY-P15NMHU-E
PEFY-P18NMHU-E
4.4
15000
5.0
17000
5.3
18000
5.9
20000
PEFY-P24NMHU-E
208/230V, 60Hz
7.0
24000
7.9
27000
380
14-31/32
PEFY-P27NMHU-E
PEFY-P30NMHU-E
7.9
27000
8.8
30000
8.8
30000
10.0
34000
750
29-17/32
44
98
10.0-14.0
353-494
N/A -50-160
100-150-200
25-32
34-39
10.0-14.0
353-494
N/A -50-160
100-150-200
25-32
34-39
PEFY-P36NMHU-E
PEFY-P48NMHU-E
10.6
36000
11.7
40000
14.1
48000
15.8
54000
380
14-31/32
1200
47-1/4
900
35-7/16
70
155
26.5-38.0
936-1342
N/A -50-160
100-150-200
31-41
38-44
1000
39-3/8
900
35-7/16
45
100
13.5-19.0
477-671
N/A -50-160
100-150-200
29-36
36-41
Standard filter
50
111
15.5-22.0
547-777
N/A -50-160
100-150-200
30-38
35-41
18.0-25.0
636-883
N/A -50-160
100-150-200
33-40
38-43
PEFY-P72NMHU-E
PEFY-P96NMHU-E
21.1
72000
23.4
80000
28.1
96000
31.7
108000
PEFY-P-NMHU-E
Item
Power sourse
Model
Cooling
Capacity
*1
Heating
Height
Dimension
Width
Depth
Net weight
Airflow rate
(Low-High)
External static
pressure *3
FAN
Noise level
(Low-High) *2
Filter
kW
BTU/h
kW
BTU/h
mm
in
mm
in
mm
in
kg
lb
m3/min
cfm
208V
Pa
230V
208V
dB(A)
230V
26.5-38.0
936-1342
N/A -50-160
100-150-2 00
31-41
38-44
PEFY-P54NMHU-E
208/230V, 60Hz
15.8
54000
17.6
60000
470
18-17/32
1250
49-7/32
1120
44-1/8
100
221
28.0-40.0
989-1412
N/A -50-160
100-150-200
31-41
38-44
Standard filter
58.0
2048
70-160
100-200
45
47
72.0
2541
70-160
100-200
52
54
Notes: *1 Cooling/Heating capacity indicates the maximum value at operation under the following condition.
Cooling: Indoor: 26.7 ˚C [80 ˚F] DB/19.4 ˚C [67 ˚F] WB
Outdoor: 35 ˚C [95 ˚F] DB
Outdoor: 8.3 ˚C [47 ˚F] DB/6.1 ˚C [43 ˚F] WB
Heating: Indoor: 21.1 ˚C [70 ˚F] DB
*2 The operating noise is the data that was obtained in an anechoic room.
*3 As for the factory setting is below.
PEFY-P-NMHU-E series
PEFY-P15NMHU-E
208V
230V
50
150
PEFY-P36NMHU-E
208V
230V
50
150
PEFY-P18NMHU-E
208V
230V
50
150
PEFY-P24NMHU-E
208V
230V
50
150
PEFY-P27NMHU-E
208V
230V
50
150
PEFY-P30NMHU-E
208V
230V
50
150
PEFY-P48NMHU-E
208V
230V
50
150
PEFY-P54NMHU-E
208V
230V
50
150
PEFY-P72NMHU-E
208V
230V
160
200
PEFY-P96NMHU-E
208V
230V
160
200
6
3-2. Electrical parts specifications
Model
Symbol
PEFYPEFYPEFYPEFYPEFY- PEFYPEFYPEFYPEFYPEFYP15
P18
P24
P27
P30
P36
P48
P54
P72
P96
NMHU-E NMHU-E NMHU-E NMHU-E NMHU-E NMHU-E NMHU-E NMHU-E NMHU-E NMHU-E
Tranrsformer
T
(Primary) 50/60Hz 220-240V (Secondry) (23.5V 0.9A)
Room
temperature
thermistor
TH21
Resistance0˚C[32˚F]/15kΩ,10˚C[50˚F]/9.6kΩ,20˚C[68˚F]/6.3kΩ,25˚C[77˚F]/5.4kΩ,
30˚C[86˚F]/4.3kΩ,40˚C[104˚F]/3.0kΩ
Liquid pipe
thermistor
TH22
Resistance0˚C[32˚F]/15kΩ,10˚C[50˚F]/9.6kΩ,20˚C[68˚F]/6.3kΩ,25˚C[77˚F]/5.4kΩ,
30˚C[86˚F]/4.3kΩ,40˚C[104˚F]/3.0kΩ
Gas pipe
thermistor
TH23
Resistance0˚C[32˚F]/15kΩ,10˚C[50˚F]/9.6kΩ,20˚C[68˚F]/6.3kΩ,25˚C[77˚F]/5.4kΩ,
30˚C[86˚F]/4.3kΩ,40˚C[104˚F]/3.0kΩ
Parts
name
Fuse
FUSE
(Indoor controller board)
Fan motor
(with InnerMF1,2
thermostat)
250V 6.3A
4-pole OUTPUT
130W
NC-45VMH
4-pole
4-pole
4-pole
Output
Output
Output
180W
220W
230W
NC-71VMH NC-80VMH NC-90VMH
Innerthermostat
(Fan motor)
Fan motor
capacitor
4-pole
4-pole
Output
Output
650W
850W
NS-224M-C1 NS-280M-C1
OFF135˚C ± 5˚C[275˚F ± 41˚F]
ON 95˚C ± 20˚C[203˚F ± 59˚F]
C1
Linear
expansion valve
LEV
Power supply
terminal bed
TB2
Transmission
terminal bed
TB5
TB15
7
4-pole OUTPUT 400W
NS-112VMH
3.0µF✕440V
4.0µF
✕440V
DC12V Stepping motor drive
port dimension ø 3.2
0~1800pulse
<at R410A outdoor unit>
0~2000pulse
<at the other outdoor unit>
5.0µF✕440V
7.0µF✕440V
DC12V Stepping motor drive
port dimension ø 5.2
0~1800pulse
<at R410A outdoor unit>
0~2000pulse
<at the other outdoor unit>
(L1,L2,G) 330V 30A
(1,2),(M1,M2,S) 300V 10A
DC12V Stepping
motor drive port
dimension ø 6.4
0~1800pulse
<at R410A
outdoor unit>
0~2000pulse
<at the other
outdoor unit>
-
DC12V Stepping motor drive
port dimension ø 5.2
0~1800pulse
<at R410A outdoor unit>
0~2000pulse
<at the other outdoor unit>
(L1,L2,L3,G, )
660V 40A
D
50(1-31/32)x(G-1)=H
C
2x6-ø3(1/8)
24(31/32)
10(13/32)
Suspension bolt hole
4-14x30(9/16x1-3/16) Slot
340(13-13/32)
PEFY-P36·48·54NMHU-E
PEFY-P27·30NMHU-E
PEFY-P24NMHU-E
PEFY-P18NMHU-E
B
C
D
E
F
1050
1004
930
850
800
(41-11/32) (39-17/32) (36-5/8) (33-1/2) (31-1/2)
1204
1130
1050
1000
1250
(49-7/32) (47-13/32) (44-1/2) (41-11/32) (39-3/8)
25
(1)
25
(1)
21
17
11
G
3Drain hose
75
((2-31/32)
)
800
(31-1/2)
1000
(39-3/8)
500
(19-11/16)
H
19
15
10
J
L
B(Suspension bolt pitch)
A
2x4-ø3(1/8)
29(1-5/32)
15(19/32)
60(2-3/8)
15(19/32)
1Gas pipe
250(9-27/32)
mm(in.)
3Drain hose
E
Drain hose
32mm(1-1/4inch)
<flexible joint>
(accessory)
1:R410A outdoor unit
2:R22 outdoor unit
328(12-15/16)
1Gas pipe <flare> 2Liquid pipe <flare>
ø6.35(1/4)
ø12.7(1/2)
1 ø6.35(1/4)
1 ø12.7(1/2)
450
780
(17-23/32) (30-23/32) 2 ø15.88(5/8)
2 ø9.52(3/8)
ø9.52(3/8)
ø15.88(5/8)
700
1030
ø9.52(3/8)
ø15.88(5/8)
(27-9/16) (40-9/16)
1 ø15.88(5/8)
1 ø9.52(3/8)
900
1230
(35-7/16) (48-7/16)
2 ø19.05(3/4)
2 ø9.52(3/8)
K
(3-5/8) 163(6-13/32)
92
200(7-7/8)
343(13-17/32)
387(15-1/4)
Drain hole
(option)
2Liquid pipe
60
((2-3/8)
)
Terminal bed Drain hole
(Transmission)
Terminal box
Terminal bed
(Power source)
Control box
900(35-7/16)
847(33-3/8)
383(15-3/32)
814(32-1/16)(Suspension bolt pitch)
904(35-19/32)
800
754
680
600
550
50
(31-1/2) (29-11/16) (26-25/32) (23-5/8) (21-21/32) (1-31/32)
A
Keep duct-work length 850mm(33-15/32 in.) or more.
Model
PEFY-P15NMHU-E
Model:P15~30(Note3)
10(13/32)
Air outlet
(3-1/16)
77
(15/8)
41
(5-1/8)
130
50(1-31/32)
50(1-31/32)x(J-1)=K
50(1-31/32)
Air inlet
30(1-3/16)
J-ø3(1/8)
380(14-31/32)
50(1-31/32)
(3-5/32)
80 50
(1-31/32)
23(29/32)
(1-31/32x4=7-7/8)
50x4=200
25(1)
Ceiling surface
-31/3
0 (1
50 ( 5
1
0
)
3
2
1/3
45 23/3
2)
(17-
2) L
Note2
4-5
625
(2
/8)
When installing the drain water lifting-up mech(option).
3
300(11-13/16) or less
170±5(6-23/32±7/32)(Actual length)
Make the access door at the appointed position properly
for service maintenance.
Access door
Access door
6)
-9/1 )
(27
7/8
700 9/32~7- 200
~
2
(3-15 100~ (5- 150
/16~ 200
7-7/8
)
(17-2 450
3/32
)
Required space for service and maintenance.
Note1.Use M10 screw for the Suspension bolt (field supply).
2.Keep the service space for the maintenance from the bottom
when the heat exchanger is cleaned.
3.This chart indicates for PEFY-P36·48·54NMHU-E models, which has 2 fans.
PEFY-P15·18·24·27·30NMHU-E models have 1 fan.
4.Make sure to install the air filter(field supply) on the air intake side.
In case field supplied air filter is used, attach it where the filter
service is easily done.
5.On Model :18,36,48,54, you would use flare nut packed with the
Indoor Unit, when connecting the Outdoor Unit for R22.
20(13/16) or more
G-ø3(1/8)
550(21-21/32) Max
70(2-25/32)
(1-5/8)
F
41
17(11/16)
340(13-13/32)
(1-31/32)x5=(9-27/32)
50x5=250
50(1-31/32)
45(1-25/32)
250(9-27/32)
94(3-23/32)
20(13/16) or more
4
OUTLINES AND DIMENSIONS
PEFY-P15·18·24·27·30·36·48·54NMHU-E
Unit :mm(in.)
8
50x21=1050(1-31/32x21=41-11/32)
50(1-31/32)
102 25
1250(49-7/32)
10(13/32)
2x8-ø3(1/8)
24(31/32)
10(13/32)
Suspension bolt hole
4-14x30(9/16x3/16) Slot
420(16-9/16)
(4-1/32)(1)
Keep duct-work length 850mm(33-15/32 in.) or more.
20(13/16)
420(16-9/16)
(1-31/32x7=13-25/32)
50x7=350
50(1-31/32)
35(1-13/32)
Model
95
222(8-3/4)
249(9-13/16)
422(16-5/8)
489(19-9/32)
(3-3/4)
1Gas pipe
2Liquid pipe
78
( (3-3/32)
)
2x7-ø3(1/8)
29(1-5/32)
15(19/32)
60(2-3/8)
1:R410A outdoor unit
2:R22 outdoor unit
mm(in.)
340(13-13/32)
3Drain hose
1Gas pipe <brazing> 2Liquid pipe <brazing>
1 ø19.05(3/4)
1 ø9.52(3/8)
Drain hose 32mm
PEFY-P72NMHU-E-(F)
2 ø25.4 (1)
2 ø12.7(1/2)
(1-1/4inch)
1 ø22.2 (7/8)
1 ø9.52(3/8)
<flexible joint >
PEFY-P96NMHU-E-(F)
(accessory)
2 ø28.58(1-5/32) 2 ø12.7(1/2)
Terminal bed
(Power source)
Terminal bed Drain hole
(Transmission)
Control box
Drain hole
(option)
1034(40-23/32)(Suspension bolt pitch)
1124(44-9/32)
1120(44-1/8)
1067(42-1/32)
3Drain hose
15
(19/32)
Air outlet
41(1-5/8)
Air inlet
30
(1-3/16)
50(1-31/32)
(3-15/16)
50x20=1000(1-31/32x20=39-3/8)
100 50
1326(52-7/32)(Suspension bolt pitch)
(1-31/32)
1372(54-1/32)
21-ø3(1/8)
-23/3
2)
)
3
300(11-13/16) or less
170±5(6-23/32±7/32)(Actual length)
When installing the drain water lifting-up mech(option).
Make the access door at the appointed position properly
for service maintenance.
Note2
730
(28
-3/4
)
1/32
1-3
/32)
50 (
5
53
50
50 (
3
(
1
1
0
)
-31
45 7-23/32
/32
(1
)
Access door Ceiling surface
Access door
)
-1/2
(31
800 0~2007-7/8)
(7-7/8 200
15 9/32~
~11-1 ~30 (5-2
3/16 0
)
(17 450
Required space for service and maintenance.
Note 1.Use M10 screw for the Suspension bolt (field supply).
2.Keep the service space for the maintenance from the bottom
when the heat exchanger is cleaned.
3.Make sure to install the air filter(field supply)
on the air intake side.
In case field supplied air filter is used, attach it where
the filter service is easily done.
4.On this model, you would use pipe
packed with the Indoor Unit, when connecting
the Outdoor Unit for R22.
550(21-21/32) Max
23(29/32)
(1-3/4)
(6-15/32)
44
164
327(12-7/8)
(13/16) 50x6=300
20 (1-31/32x6=11-13/16)
(4-5/32)
340(13-13/32)
105
470(18-17/32)
20(13/16) or more
9
20(13/16) or more
22-ø3(1/8)
PEFY-P72 · 96NMHU-E
Unit :mm(in.)
1100(43-5/16)
110(43-5/16)
1234 5 6
(Red)
CN81
SW11
(1st digit)
901
2
3
654
21
21
TH21 TH22 TH23
21
NOTE 1
DS
3 1
CN31
(White)
CN31
21
3
654321
1
2
A connector is
attached to the
drain lift up
mechanism,
which is an
optional part.
NOTE 1,2
A1 1
2 2
(Red)
CN3T
(White)
CN60
LEV
SYMBOL
MF
C
I.B.
A.B.
TB2
TB5
TB15
F1
<F2>
T
<DP>
LEV
ZNR,ZNR1
SYMBOL
NAME
SYMBOL
NAME
Fan motor
TH21
<DS> Drain sensor
Capacitor (for MF)
TH22
S.B.
Surge absorber board
LED1 Power supply (I.B.)
Indoor controller board
TH23
LED2 Power supply (Remote controller) SW11(A.B.)
Address board
SW12(A.B.)
CN22 Connector
Power source terminal bed
SW14(A.B.)
CN23 Connector
Transmission terminal bed
CN24 Connector
Transmission terminal bed
SW1(A.B.)
CN25 Connector
Fuse AC250V 6.3A T
SW5(A.B.)
CN27 Connector
Fuse AC250V 5A F
SW7(A.B.)
CN32 Connector (Centrally control)
Transformer
SW2(I.B.)
Drain pump
CN41 Connector (HA terminal-A)
SW3(I.B.)
Electronic linear expan.valve CN51 Connector (Centrally control)
SW4(I.B.)
CN52 Connector (Remote indication)
Varistor
X01,X04~X06
SYMBOL EXPLANATION
ZNR
X01
DP
Inside < > is the optional parts.
NAME
Thermistor (Inlet temp.detection)
Thermistor (Piping temp.detection/liquid)
Thermistor (Piping temp.detection/gas)
Switch (1st digit address set)
Switch (2nd digit address set)
Switch (connection No.set)
Switch(for mode selection)
Switch(for voltage selection)
Switch(for model selection)
Switch(for capacity code)
Switch(for mode selection)
Switch(for model selection)
Aux.relay
NOTE 1
4 31
3
(Red)
31 9 8 5 31
4 31 9 8
*insert
(Blue)
98 6
98
DSA1
L2
G
L1 TB2
PARTS LOCATION
S.B.
C
TB2
A.B.
CONTROL BOX
TB5,TB15
I.B.
POWER SUPPLY
~208/230V 60Hz
BREAKER(15A)
FUSE(15A)
PULL BOX
TO NEXT INDOOR UNIT
TO OUTDOOR UNIT
BC CONTROLLER
REMOTE CONTROLLER
TB5 (TRANSMISSION TERMINAL BED)
TO MA REMOTE CONTROLLER
TB15 (TRANSMISSION TERMINAL BED)
S(SHIELD)
M2
M1
S.B.
(Yellow)
CN1 1
ZNR1
(Blue) 2
CN2M 1
2
1
TO DUCT
attachment to alter the external static pressure on the fan
Color/External static pressure
Red/High Pressure
Blue/Low Pressure
White/Middle Pressure
MF
98 4 31
(White) 98 65 4 3 1
C
( )
AC250V
F2 5A F
13 7
(White)
FAN3
X06 X05 X04
(Blue) 3
CN3A 1
INSIDE SECTION OF CONTROL BOX
I.B.
(Yellow) 5 31
FAN2
(White)
(Red) (Blue)
CND CNP
CNT
31
13
1 31
T
(AC250V
6.3A T ) F1
NOTE; 1.The part of the broken line indicates the circuit for optional parts.
2. A in the chart is the connector for a drain pump test run operation.
(The Drain Pump operates continuously if the connector is inserted
and the power is supplied.)
After the test run, make sure to remove the A connector.
3.The wirings to TB2,TB5,TB15 shown in chained line are field work.
4.Mark indicates terminal bed, connector, board insertion
connector or fastening connector of control board.
SW14
SW12
(Connection No.) (2nd digit)
8
7
SW7
LED2
(White) (Green) (White) (White) (Green) (Yellow) (White) (Red) (Green)
CN32 CN52 CN51 CN41 CN23 CN24 CN25 CN27 CN22
(Red) (White) (Black)
CN20 CN21 CN29
LED1
(Red) SW4SW3 SW2
CN42
CN62
8 CN82
7 (White) (White)
6
SW5
SW1
5
4
901
EF012
3
D
3
2
8
C
4
2
3
7
BA
5
1
654
9876
A.B.
1
2
3
4
1
2
3
4
5
6
7
8
5
WIRING DIAGRAM
PEFY-P15·18·24·27·30·36·48·54NMHU-E
10
11
123456
6 5 4
9 0 1
2
3
6 5 4
9 0 1
2
3
SW11
(1st digit)
8
7
SW7
SW4 SW3 SW2
SW12
(2nd digit)
8
7
SW5
(Red)
CN81
(Red)
CN42
LED2
TH21
21
TH22
21
TH23
21
(Red) (White) (Black)
CN20 CN21 CN29
LED1
1
NOTE 1
DS
3
CN31
21
(White)
CN31
(Red)
3
31
2
2
2
1
(White)
CNT
AC250V
F1
6.3A T
( )
A 1 1
T
1
(Red)
CN3T
(Green)
SYMBOL EXPLANATION
SYMBOL
SYMBOL
NAME
NAME
MF
Fan motor
52F
Contactor (fan motor)
I.B.
Indoor controller board
51F
Over current relay (fan motor)
A.B.
Address board
LED1 Power supply (I.B.)
TB2
LED2 Power supply (Remote controller)
Power source terminal bed
Transmission terminal bed
TB5
CN22 Connector
CN23 Connector
Transmission terminal bed
TB15
F1
CN24 Connector
Fuse AC250V 6.3A T
CN25 Connector
<F2>
Fuse AC250V 5A F
T
Transformer
CN27 Connector
CN32 Connector (Centrally control)
<DP> Drain pump
LEV1,LEV2 Electronic linear expan.valve CN41 Connector (HA terminal-A)
<DS> Drain sensor
CN51 Connector (Centrally control)
S.B.
Surge absorber board
CN52 Connector (Remote indication)
ZNR,ZNR1 Varistor
(
13
(Red)
CND
ZNR
654321
654321
LEV2
654321
654321
LEV1
SYMBOL
TH21
TH22
TH23
SW11(A.B.)
SW12(A.B.)
SW14(A.B.)
SW1(A.B.)
SW5(A.B.)
SW7(A.B.)
SW2(I.B.)
SW3(I.B.)
SW4(I.B.)
X01,X04~X06
49F
51F
MF
49F
321654
52F
89
89
1357
I.B.
3
1
52F
3
S.B.
(Yellow)
CN1 1
TB15 (TRANSMISSION TERMINAL BED)
TO MA REMOTE
CONTROLLER
G
TB2
L1
L2
L3
PARTS LOCATION
TB2
S.B.
TB5,TB15
52F
51F
POWER SUPPLY
3~208V/230V 60Hz
CONTROL BOX
A.B.
I.B.
TO DUCT
BREAKER
TB5 (TRANSMISSION TERMINAL BED)
S(SHIELD)
TO OUTDOOR UNIT
M2
BC CONTROLLER
M1
REMOTE CONTROLLER
2
1
6 5 4 8 9 (Blue)
( 9A )
51F
ZNR1
DSA1
(Blue)
2
CN2M 1
(Blue)
CN3A
Color/External static pressure
White/High Pressure
Blue/Low Pressure
(White)
FAN3
X05 X04
NAME
Thermistor (Inlet temp.detection)
Thermistor (Piping temp.detection/liquid)
Thermistor (Piping temp.detection/gas)
Switch (1st digit address set)
Switch (2nd digit address set)
Switch (connection No.set)
Switch(for mode selection)
Switch(for voltage selection)
Switch(for model selection)
Switch(for capacity code)
Switch(for mode selection)
Switch(for model selection)
Aux.relay
Inner thermostat
Inside < > is the optional parts.
NOTE 1
DP
CR
X06
(White) 3 2 1
)
31
(Blue)
CNP
X01
(Yellow) 5 3 1
FAN2
A connector is attached
F2
to the drain lift up
AC250V
mechanism,
5A F
which is an optional part.
NOTE 1,2
LEV adapter board
654321
654321
(White)
CN60
(White) (Green) (White) (White) (Green) (Yellow) (White)
CN32 CN52 CN51 CN41 CN23 CN24 CN25 CN27 CN22
CAUTION; 1.To protect Fan motor from abnormal current, Over current relays<51F>
is installed. Therefore, do not change factory set value of Over current relays.
NOTE;
1.The part of the broken line indicates the circuit for optional parts.
2. A in the chart is the connector for a drain pump test run operation.
(The Drain Pump operates continuously if the connector is inserted
and the power is supplied.)
After the test run, make sure to remove the A connector.
3.The wirings to TB2,TB5,TB15 shown in chained line are field work.
4.Mark indicates terminal bed, connector, board insertion
connector or fastening connector of control board.
SW14
(Connection No.)
C
4
BA
5
9876
CN62
8 CN82
7 (White) (White)
6
5
SW1
4
3
2
EF0 12
1
D
3
A.B.
1
2
3
4
5
6
7
8
1
2
3
4
INSIDE SECTION OF CONTROL BOX
PEFY-P72·96NMHU-E
6
REFRIGERANT SYSTEM DIAGRAM
Gas pipe thermistor TH23
Gas pipe
Liquid pipe thermistor TH22
Flared joints(Type 15~54)
Brazed joints(Type 72·96)
Heat exchanger
Linear expansion valve
Strainer (#100mesh)
Strainer (#100mesh)
Room temperature thermistor TH21
mm <in.>
Capacity
Item
PEFY-P15NMHU-E
PEFY-P18NMHU-E
PEFY-P24,27,30NMHU-E
ø 12.7 (1/2)
R410A
ø 15.88 (5/8)
Gas pipe
R22
ø 12.7 (1/2)
ø 15.88 (5/8)
ø 6.35 (1/4)
R410A
ø 9.52 (3/8)
Liquid pipe
R22
ø 6.35 (1/4)
ø 9.52 (3/8)
mm <in.>
Capacity
PEFY-P36,48,54NMHU-E
PEFY-P72NMHU-E
PEFY-P96NMHU-E
R410A
ø 15.88 (5/8)
ø 19.05 (3/4)
ø 22.2 (7/8)
R22
ø 19.05 (3/4)
ø 25.4 (1)
ø 28.58 (9/8)
Item
Gas pipe
ø 9.52 (3/8)
R410A
Liquid pipe
R22
ø 9.52 (3/8)
ø 12.7 (1/2)
12
7
TROUBLE SHOOTING
7-1. How to check the parts
Parts name
Check points
Room temperature
thermistor
(TH21)
Liquid pipe thermistor
(TH22)
Gas pipe thermistor
(TH23)
Disconnect the connector, then measure the resistance using a tester.
(Sorrounding temperature 10°C~30°C[50°F~86°F])
Trans
Disconnect the connector and measure the resistance using a tester.
CNT
3T
1
CNT(1)-(3)
CN3T(1)-(3)
Fan motor PEFY-P15~54
Gray
Blue
Black
Orange
Blown
Red
Red
Motor terminal
or
Relay connector
Gray-Orange
Gray-Black
Gray-Brown
Gray-Blue
1
2
3
4
5
6
7
8
9
Fan motor PEFY-P72 · 96
Brown
Motor terminal
or
Relay connector
Red-White
White-Black
Red-Black
Brown-Gray
Gray-Yellow
Brown-Yellow
4
Red
1
Orange
8
Orange
9
White
2
Gray
5
Black
3
Yellow
6
Linear expansion
CN60
valve
White
Yellow
Orange
LEV
Blue
Red
Brown
1
2
3
4
5
6
Drain Pump
(Drain water lift up kit)
Red
Red
1
3
Drain sensor
(Drain water lift up kit)
3
1
Abnormal
Open or short
Normal
P40· 50 P63
P71
P80 P100·125·140
68.8Ω
47Ω
32.9Ω 33.3Ω 14.05Ω
53.73Ω 37.29Ω 27.56Ω 27.1Ω 9.11Ω
59.92Ω 39.81Ω 30.64Ω 28.56Ω 9.87Ω
74.17Ω 49.8Ω 38.31Ω 36.82Ω 12.89Ω
Normal
Abnormal
6.68 Ω
6.68 Ω
6.68 Ω
8.144Ω
8.144Ω
8.144Ω
Open or short
Abnormal
Open or short
(at 20˚C[68°F])
Disconnect the connector then measure the resistance valve using a tester.
Normal
Abnormal
(1)-(5)
(2)-(6)
(3)-(5)
(4)-(6)
White-Red Yellow-Brown Orange-Red Blue-Brown
Open or short
150Ω ±10%
Disconnect the connector then measure the resistance
valve using a tester.
(Sorrounding temperature 20°C~30°C[68°F~86°F])
Normal
399Ω
Abnormal
Open or short
Measure the resistance between the terminals using
a tester.
(Refer to the thermistor characteristic graph)
0˚C/6.0kΩ, 10˚C/3.9kΩ
20˚C/2.6kΩ, 25˚C/2.2kΩ
30˚C/1.8kΩ, 40˚C/1.3kΩ
<Thermistor characteristic graph>
Room temperature thermistor(TH21)
Liquid pipe thermistor(TH22)
Gas pipe temperature thermistor(TH23)
Drain sensor(DS)
Thermistor R0=15kΩ ± 3%
Fixed number of B=3480kΩ ± 2%
Rt=15exp { 3480(
0˚C
10˚C
20˚C
25˚C
30˚C
40˚C
32˚F 15kΩ
50˚F 9.6kΩ
68˚F 6.3kΩ
77˚F 5.2kΩ
86˚F 4.3kΩ
104˚F 3.0kΩ
1
273+t
1 )}
273
50
40
30
20
10
0
13
(at 20˚C[68°F])
Measure the resistance between the terminals using a tester.
Relay connector
Protector
Normal
App.15Ω
App.4Ω
(Refer to the thermistor characteristic graph)
Measure the resistance between the terminals using a tester.
Relay connector
Protector
Abnormal
Open or short
Resistance (KΩ)
CN3T
3
Normal
4.3kΩ~9.6kΩ
-20 -10 0 10 20 30 40 50 (˚C)
-4 14 32 50 68 86 104 122 [˚F]
Temperature
7-2. Setting of address switch
Make sure that power source is turning off.
Indoor unit control board
SW 2
SW4
SW 3
< At delivery (All models)> S W 1
ON
OFF
SW 4
ON
OFF
1 2 3 4 5 6 7 8 9 10
< At delivery (P15~54)>
1 2 3 45
SW 4
0 1 2 3 4 5 6 7 8 9
ON
SW1 ON
< At delivery (P72·96)>
1 2 3 45
1 2
ASSY
ON
OFF
G 1 2 3
SWC
SW5
SW14
8
10
1
CN82
SW12
SW11
901
901
6
CN62 1
ON
1
2
3
10
SW7
O
F
F
F012
9
23
SWA
8
23
1
7
3456
2
6
78
3
5
78
4
BCDE
3
240V 220V
2
789A
1
456
1
JP1
456
FP-AD-R
1
3
JP2
W254665G06
A B C D E F
1)In case using M-NET remote controller, address is set by rotary switches.(SW11,SW12)
* It is not necessary setting address in case of using unit remote controller.
Indoor unit do not run without address setting in field.
2) Indoor unit address setting rule is different by each field work.
Refer to install manual of outdoor unit , operate the address setting.
3)Setting the address is combination of SW11(1st digit address setting) and SW12(2nd digit address setting).
Address " 3 " setting is composed SW11 " 3 " and SW12 " 0 " .
Address " 25 " setting is composed SW11 " 5 " and SW12 " 2 " .
14
7-3. Setting of Dip-switch (at delivery)
Models
Dip-SW
SW1
PEFY-P15
NMHU-E
ON
OFF
PEFY-P18
NMHU-E
ON
OFF
PEFY-P24
NMHU-E
ON
OFF
PEFY-P27
NMHU-E
ON
OFF
PEFY-P30
NMHU-E
ON
OFF
PEFY-P36
NMHU-E
ON
OFF
PEFY-P48
NMHU-E
ON
OFF
PEFY-P54
NMHU-E
ON
OFF
ON
OFF
1 2 3 4 5 6 7 8 910
SW1
1 2 3 4 5 6 7 8 910
SW1
1 2 3 4 5 6 7 8 910
PEFY-P96
NMHU-E
ON
OFF
1 2 3 4 5 6 7 8 910
123456
123456
ON
OFF
S W5
220V
240V
ON
OFF
ON
OFF
S W5
220V
240V
ON
OFF
ON
OFF
S W5
220V
240V
ON
OFF
1 2 3 4 5 6 7 8 910
ON
OFF
ON
OFF
ON
OFF
123
S W7
S W5
220V
240V
ON
OFF
S W7
S W5
220V
240V
S W7
ON
OFF
123
ON
OFF
S W5
220V
240V
S W7
ON
OFF
123
S W5
ON
220V
OFF 240V
S W7
ON
OFF
1 2 345
ON
OFF
1 2 345
SWA
1
ON
OFF
1 2 345
S W4
1 2 3 4 5 6 7 8 910
S W7
1 2 345
S W4
1 2 3 4 5 6 7 8 910
123
123
ON
OFF
S W4
1 2 3 4 5 6 7 8 910
S W7
1 2 345
S W4
1 2 3 4 5 6 7 8 910
123
123
S W4
ON
OFF
S W3
ON
OFF
ON
OFF
1 2 345
S W3
ON
OFF
SW2
ON
OFF
1 2 3 4 5 6 7 8 910
S W3
ON
OFF
S W5
220V
240V
S W4
ON
OFF
S W3
ON
OFF
SW2
ON
OFF
SW1
1 2 3 4 5 6 7 8 910
123456
1 2 345
S W3
ON
OFF
SW2
ON
OFF
SW1
ON
OFF
123456
ON
OFF
S W3
ON
OFF
SW2
ON
OFF
SW1
1 2 3 4 5 6 7 8 910
123456
1 2 345
S W7
ON
OFF
S W4
1 2 3 4 5 6 7 8 910
S W7
ON
OFF
123
S W4
S W3
ON
OFF
SW2
ON
OFF
SW1
1 2 3 4 5 6 7 8 910
123456
1 2 345
ON
OFF
1 2 3 4 5 6 7 8 910
SW2
ON
OFF
SW1
1 2 3 4 5 6 7 8 910
123456
ON
OFF
S W3
SW2
ON
OFF
1 2 3 4 5 6 7 8 910
S W5
220V
240V
1 2 345
S W4
ON
OFF
123456
SW1
ON
OFF
S W3
ON
OFF
SW2
ON
OFF
1 2 3 4 5 6 7 8 910
PEFY-P72
NMHU-E
123456
ON
OFF
1 2 3 4 5 6 7 8 910
SW2
ON
OFF
S W4
ON
OFF
123456
SW1
1 2 3 4 5 6 7 8 910
S W3
SW2
123
ON
OFF
S W5
220V
240V
S W7
ON
OFF
123
7-4. Attention for test run
Equipment which is attached drain water lift up kit can be tested
pump out test when power supplied.(connect the connector(A))
< Drain-up machine >
Test run Connector (red)(A)
After pump out test, remove the connector
and put in the dummy connector.
After test run,remove the connector (A)(Fig .1)
7-5. Function the LED of the indoor unit service board
Symbol
15
LED operation under normal state
LED1
At applying main power source
Lighting
LED2
At receiving MA transmission power source
Lighting
SWC
Standard
Indicate
8
DISASSEMBLY PROCEDURE
Be careful on removing heavy parts.
8-1. CONTROL BOX
OPERATING PROCEDURE
Models 15~54
1.Removing the control box cover
(1) Remove the fixing screws (two) of the control box (A), and
remove the cover. (Fig. 1)
PHOTOS
Fig.1
(A)
*At this stage, the following servicing is possible.
1 Operation and check of the switches (listed below) which
are on the control board.
• Dip switch SW2 · · · · · · · · · · · Capacity code setting
• Dip switch SW3 · · · · · · · · · · · Function change
• Dip switch SW4 · · · · · · · · · · · Model code setting
2 Connection check of the lead wires (listed below) which are
connected to the controller board.
• Power supply lead wire.
• Network remote contoller transmission lead wire.
• Fan motor lead wire.
• LEV lead wire
• Intake air sensor lead wire
• Liquid piping sensor lead wire
• Gas piping sensor lead wire
• Power supply transformer lead wire
Address board lead wire
(• Drain pump lead wire)
(• Drain sensor lead wire)
3
4
5
6
7
(
Control board exchange
Condenser exchange
Power supply transformer exchange
Arrest exchange
Intake air sensor exchange
Fig.2
(B)
Fig.3
):Optional parts
2.Removing the terminal bed cover
(1) Remove the fixing screws (two) of the terminal bed cover
(B), and remove the cover. (Fig. 2)
*At this stage, the following servicing is possible.(Fig. 3)
1 Operation and check of the switches (listed below) which
are on the adress board.
• Rotary switches SW11, 12 · · · Address setting
• Rotary switch SW14 · · · · · · · · · Branch port setting
• Dip switch SW1 · · · · · · · · · · · · · Function change (main)
2 Address board exchange
3 Power supply terminal bed exchange
4 Transmission terminal bed exchange
16
Be careful on removing heavy parts.
OPERATING PROCEDURE
Models 72 · 96
1.Removing the control box cover
(1) Remove the fixing screws (four) of the control box cover (C),
and remove the cover. (Fig. 4)
PHOTOS
Fig.4
(C)
*At this stage, the following servicing is possible.(Fig. 5)
1 Operation and check of the switches (listed below) which
are on the control board.
• Dip switch SW2 · · · · · · · · · · · Capacity code setting
• Dip switch SW3 · · · · · · · · · · · Function change
• Dip switch SW4 · · · · · · · · · · · Model code setting
2 Connection check of the lead wires (listed below) which are
connected to the controller board.
• Power supply lead wire.
• Network remote contoller transmission lead wire.
• Fan motor lead wire.
• LEV lead wire
• Intake air sensor lead wire
• Liquid piping sensor lead wire
• Gas piping sensor lead wire
• Power supply transformer lead wire
• Address board lead wire
(• Drain pump lead wire)
(• Drain sensor lead wire)
Control board exchange
Power supply transformer exchange
Arrest exchange
Intake air sensor exchange
Operation and check of the switches (listed below) which
are on the address board
• Rotary switches SW11, 12 · · · · Address setting
• Rotary switch SW14 · · · · · · · · · · Branch port setting
• Dip switch SW1· · · · · · · · · · · · · · Function change (main)
8 Address board exchange
9 Power supply terminal bed exchange
10 Transmission terminal bed exchange
3
4
5
6
7
(
17
):Optional parts
Fig.5
Be careful on removing heavy parts.
8-2. FAN and FAN MOTOR
OPERATING PROCEDURE
Models 15~54
1.Removing the control box.
(1) Remove the control box cover and terminal bed cover with
procedure 8-1.
(2) Remove the fan motor connectors.
(3) Remove the fixing screws (two) of the control box and slide
the control box to remove.(Fig. 1)
(4) Move the control box to place that is not block operation.
(Fig. 2)
PHOTOS
Fig.1
Fig.2
Control box
Control box
Fig.3
(A)
(D)
(E)
2.Removing the fan motor
Models 15~30
*After motor base (D) and bell mouse (C) attached the fan
case (B) removed,motor (A) can be pull with motor base
and fan along rail.
(B)
(1) Remove the fan motor connector (E).
(2) Loosen the fixing screws (F) (three) of the bell mouse (C),
and removed the bell mouse (D) turning screws in direction
arrow (counterclockwise).(Fig. 3)
(3) Remove the fixing screws (four) of the motor base(D).
Notice: It's necessary using the driver over 30cm length to
remove the fixing screws (a) .
(Fixing screws are placed back)
(C) Fixing screws (F)
Loosen fixing screws (not remove)
Models 40~63
Fig.4
Fixing screws (a)
Fixing screws
Motor base (D)
18
Be careful on removing heavy parts.
OPERATING PROCEDURE
(4) Slide the motor (A) with motor base (D) in direction of allow
1. (Fig. 5)
PHOTOS
Fig.5
(A)
(D)
Arrow 1
Fig.6
Motor (A)
Models 36·48·54
*Motor maintenance procedure is almost 15~30 models
procedure.
Models 36~54 have twin shaft motor.After removing the
fan and fan case which are in front of motor,remove the
motor.
(1) Remove the bell mouse of the front fan motor with procedure
models 15~54.
(2) Loosen the setting screws of the front fan , removed the fan.
(3) Remove the front fan case.
(4) Operate with procedure models 15~30.
Notice: Fixing screws of the fan case are shown Fig. 7.
Remove the fixing screws (H) ,fan case can be removed.
Fig.7
Fan case
Service side
Fan case fixing screws (H)
19
Be careful on removing heavy parts.
OPERATING PROCEDURE
Models 72 · 96
1.Removing the control box.
(1) Remove the control box cover1 with procedure 8-1.
(2) Remove the fixing screws (four) of the control cover 2, and
remove the control cover2. (Fig. 7)
(3) Remove the fan motor connectors.
(4) Remove the fixing screws (three) of the control box and
remove the control box (Fig. 8)
(5) Move the control box to place that is not block operation.
(Fig. 9)
PHOTOS
Control box
cover 2
Fig.7
Fig.8
Control box
Fig.9
Control box
2.Removing the fan motor
*After the fan (A) ,the fan case (B) and the bell mouse (C)
removed, motor can be pull with motor base and inner fan
along rail.
(1) Remove the fixing screws (three) of the bell mouse (C), and
remove the bell mouse (C). (Fig. 3)
(2) Loosen the setting screws (G) of the front fan , removed the
fan.(Fig. 10)
Fig.10
(G)
(A)
(D)
(B)
(C)
(E)
Fixing screws (F)
20
Be careful on removing heavy parts.
OPERATING PROCEDURE
PHOTOS
(3) After removing the fixing screws (H)(as shown models
36·48·54) of the front fan case(B) and remove the fan.
Pull the fan case (B).
Fig.11
(4) Remove the fixing screws (K)(three) of the bell mouse (J)
attached fan case (L), and remove the bell mouse (J).
(Fig.12)
(5) Remove the fixing screws (four) of the motor base(D).
(B)
Notice: It's necessary using the driver over 30cm length to
remove the fixing screws (a) .
(Fixing screws are placed back)(Fig. 13)
(6) Slide the motor (M) with motor base (D) in direction of arrow
2 . (Fig. 14)
Notice: It's not necessary removing the fan case (L).
Fixing screws (H)
Fig.12
(D)
(J)
(L)
Fixing screws (K)
Fig.13
Fixing screws
Fixing screws (a)
Fig.14
Motor base(D)
Fig.15
(M)
(D)
Arrow 2
21
Motor (M)
8-3. LEV,THERMISTOR (Liquid/Gas piping temperature detection)
Be careful on removing heavy parts.
OPERATING PROCEDURE
Models 15~54
1.Removing the LEV.
(1) Remove the control box cover with procedure 8-1.
(2) Remove the fixing screws (four) of the heat exchanger cover
(A), and remove the cover (A).(Fig. 1)
(3) Remove the LEV driving motor with a double spanner.(Fig. 2)
PHOTOS
Fig.1
(A)
2.Removing the thermistors.
(1) Remove the thermistors from the thermistor holders which
are installed on the piping.(Fig. 2)
(liquid piping : fine piping , gas piping : thick piping)
Fixing screws
Fig.2
LEV
Models 72 · 96
1.Removing the LEV. (These models have 2 LEV)
(1) Remove the fixing screws (three) of the heat exchanger cover
(A), and remove the cover (A).
(2) Remove the fixing screws (four) of the maintenance cover
(B), and remove the cover (B).(Fig. 3)
(3) Remove the LEV driving motor with a double spanner.(Fig. 4)
Thermistor
Fig.3
Fixing screws
(B)
2.Removing the thermistors.
(1) Remove the thermistors from the thermistor holders which
are installed on the piping.(Fig. 4)
(liquid piping : fine piping , gas piping : thick piping)
(A)
Fixing screws
Fig.4
LEV
Thermistor
22
Be careful on removing heavy parts.
8-4. HEAT EXCHANGER
OPERATING PROCEDURE
Models 15~54
1.Removing the heat exchanger.
(1) Remove the heat exchanger cover with procedure 8-3-1.
(2) Remove the bottom plate which is air outlet side.(fixing
screws : ten) (Fig. 1)
(3) Remove the drainpan.(Fig. 2)
PHOTOS
Fig.1
Bottom plate
Fig.2
Drainpan
Fig.3
Fixing screws
23
Be careful on removing heavy parts.
OPERATING PROCEDURE
(4) Remove the maintenance cover.(fixing screws : two) (Fig. 4)
(5) Remove the heat exchanger.(fixing screws : four) (Fig. 3,5)
PHOTOS
Fig.4
*Removerd heat exchanger is as shown Fig.6
Maintenance cover
Fixing screws
Fig.5
Fixing screws
Fig.6
24
Be careful on removing heavy parts.
OPERATING PROCEDURE
Models 72 · 96
1.Removing the heat exchanger.
(1) Remove the refrigerant piping and drain hose from main
unit.(Be care that water is not leaking from drain hose. )
(2) Remove the power supply wire and the transmission line.
(Make sure that power source is turning off. )
(3) Pull down the main unit.
(4) Turn over the main unit upside the bottom plate
(5) Remove the bottom plate which is air outlet side.(fixing
screws : fifteen) (Fig. 7)
(6) Remove the drainpan.(Fig. 8)
PHOTOS
Fig.7
Bottom plate
Fig.8
Drainpan
Fig.9
Fixing screws
25
Be careful on removing heavy parts.
OPERATING PROCEDURE
(7) Remove the fixing screws (three) of the heat exchanger
cover, and remove the cover. Remove the fixing screws
(four) of the maintenance cover, and remove the cover. (Fig.
10)
(7) Remove the heat exchanger.
Fixing screws(non-piping side) : two (Fig. 9)
Fixing screws(piping side)
: two (Fig. 11)
PHOTOS
Fig.10
(A)
Fixing screws
*Removerd heat exchanger is as shown Fig.12
Maintenance cover
Fixing screws
Fig.11
Fixing screws
Fig.12
26
8-5. CONTROL BOX INSIDE LAYOUT
Models 15~54
Trans
Condenser
(for motor)
FAN2
CNP
CNT
Indoor unit
contoller board
CN3T
CND
STR2012
FAN3
X05
X04
CN3R
L
N
CN60
SW1
CN82
SW14
SW12 SW11
CN27
CN21
CN29
CN25
CN52
CN50
SW4
CN81
CN41
SW3
CN51
SW2
DSA board
CN20
CN23
CN42
CN24
CN26
CN2M
X06
CN62
1
2
Transmission terminal bed
SWA SWC SW5
Power sourse
terminal bed
Address board
Models 72 · 96
Magnet contactor
Trans
CNP
FAN2
CNT
CND
CN3T
STR2012
Indoor unit
contoller board
FAN3
X05
X04
CN42
CN20
CN2M
X06
CN81
CN60
DSA board
LEV adapter board
LEV1
SW1
SW14
SWA
CN82
CN62
Address board
SW12 SW11
SWC SW5
Power sourse
terminal bed
Transmission terminal bed
27
8-6. SENSOR POSITION
●PEFY-P15NMHU-E
●PEFY-P18· 24NMHU-E
Liquid sensor
Gas sensor
●PEFY-P27· 30NMHU-E
Liquid sensor
Gas sensor
●PEFY-P36 · 48NMHU-E
Gas sensor(36)
Liquid sensor
Gas sensor
●PEFY-P54NMHU-E
Liquid sensor
Gas sensor(48)
●PEFY-P72 · 96NMHU-E
Liquid sensor
Liquid sensor(72·96)
Gas sensor(72)
Gas sensor
Gas sensor(96)
28
Issued in Aug. 2005 HWE05120
New publication, effective Aug. 2005
Specifications subject to change without notice
3400 Lawrenceville Suwanee Road ● Suwanee, Georgia 30024
Toll Free: 800-433-4822 ● Toll Free Fax: 800-889-9904
www.mrslim.com
Specifications are subject to change without notice.