Download SERVICE MANUAL AE-X2M14LR - RB Climatizzatori Sharp Milano

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AEX2M14LR
SERVICE MANUAL
No. S2038AEX2MLRT
MULITI SPLIT TYPE
ROOM AIR CONDITIONERS
(OUTDOOR UNIT)
MODEL
AE-X2M14LR
In the interests of user-safety (Required by safety regulations in some
countries) the set should be restored to its original condition and only
parts identical to those specified should be used.
CONTENTS
CHAPTER 1. SPECIFICATIONS
[1] SPECIFICATION ........................................... 1-1
[2] EXTERNAL DIMENSION .............................. 1-2
[3] CAPACITY TABLE......................................... 1-3
[4] ELECTRICAL PARTS.................................... 1-3
[5] WIRING DIAGRAMS ..................................... 1-4
CHAPTER 2. EXPLANATION OF CIRCUIT AND OPERATION
[1] BLOCK DIAGARM ........................................ 2-1
[2] FUNCTIONS ................................................. 2-2
[3] ACTIVE FILTER CIRCUIT............................. 2-4
[4] EXPLANATION OF IPM DRIVE CIRCUIT
........ 2-6
CHAPTER 3. FUNCTION AND OPERATION OF PROTECTIVE PROCEDURES
[1] PROTECTIVE FUNCTIONS AND OPERATIONS ............................................................ 3-1
[2] TROUBLESHOOTING GUIDE ...................... 3-2
CHAPTER 4. REFRIGERATION CYCLE
[1] REFRIGERATION SYCLE............................. 4-1
[2] REFRIGERANT PIPE INSTALLATION
WORKS ......................................................... 4-2
CHAPTER 5. DISASSEMBLING PROCEDURE
[1] OUTDOOR UNIT ........................................... 5-1
Parts Guide
Parts marked with "
" are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the
safety and performance of the set.
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
AEX2M14LR
CHAPTER 1. SPECIFICATIONS
AEX2M14LR
Service Manual
[1] SPECIFICATION
ITEMS
Cooling capacity
2-INDOOR OPERATION
Heating capacity
2-INDOOR OPERATION
Moisture removal
✩ Electrical data
Phase
Rated frequency
Rated voltage
Rated current
Rated input
Power factor
Compressor
Refrigerant system
INDOOR UNIT
AY-XPM7FR/9FR/12FR
kW
7K & 7K
kW
7K & 7K
Liters/h
3.8(1.8 – 4.3)*
4.4 (1.9 – 5.4)*
1.6
Hz
V
Cool
A
Heat
A
Cool
W
Heat
W
Cool
%
Heat
%
Type
Model
Oil charge
Evaporator
Condenser
Control
Name of refrigerant
Refrigerant volume
Noise level (at cooling)
dB(A)
Single
50
230V
4.1 (1.6 – 5.3)*
4.4 (1.7 – 5.9)*
900(350– 1160)*
950 (370 – 1300)*
95
94
Hermetically sealed DC twin rotary
DA130A1F-28F
Ester oil VG74
Silt Fin and Grooved tube type
Corrugate Fin and Grooved tube type
Expansion valve
R410A
1680g
High/Med/Low
7FR: 37/34/28
9FR: 39/36/28
45
12FR: 40/37/29
Fan system
Drive
Direct drive
.
m3/min.
Air flow quantity (at cooling)
Fan
Connections
Refrigerant coupling
Refrigerant tube size Gas, Liquid
Maximum length (per unit)
Maximum length (total)
Maximum charge-less length
Maximum height difference
Additional Charge (per m)
Drain joint
Others
Safety device
Air filters
Net dimensions
Net weight
OUTDOOR UNIT
AE-X2M14LR
m
m
m
m
g
mm
High/Med/Low
7FR: 8.0/7.4/5.4
9FR: 8.6/7.9/5.6
12FR: 10.2/8.6/6.1
Cross flow fan
33
Propeller fan
Flare type
3/8”, 1/4”
25
40
25
10
15
Connected part O.D.16
Compressor: Thermistor
Fan motors: Thermal fuse (indoor unit).
Thermal protector (Out door unit)
Fuse, Micro computer control
Anti-mold polypropylene net of injection type (Washable)
Width
mm
790
950 (890+60)
Height
mm
278
645
Depth
mm
198
323 (290+33)
kg
10
51
NOTE: The condition of star “✩“marked item are ‘ISO5151’:
*: Representative connection
1–1
AEX2M14LR
320
[2] EXTERNAL DIMENSION
950
60
320
117
527
645
890
940
323
290
170
1–2
52
24
570
24
151
52
179
284
210
621
5
645
50
890
AEX2M14LR
[3] CAPACITY TABLE
Outdoor Units
AE-X2M14LR
Recommended Combination
Indoor Units
AY-XPM7/9/12FR, GS-XPM9/12, GS-XPM7/9/12FR
12
7
9
9
9
7
7
7
COOLING CAPACITY TABLE
Operating
Status
2-Room
1-Room
Combination of
Indoor Units
A
B
12
09
12
07
09
09
09
07
07
07
12
OFF
09
OFF
07
OFF
Cooling Capacity (kW)
A
2.2
2.4
1.9
2.1
1.9
3.4
2.6
2.0
B
1.6
1.4
1.9
1.7
1.9
OFF
OFF
OFF
RATING (Min. - Max.)
3.8 (1.8 - 4.3)
3.8 (1.8 - 4.3)
3.8 (1.8 - 4.3)
3.8 (1.8 - 4.3)
3.8 (1.8 - 4.3)
3.4 (1.4 - 4.0)
2.6 (1.4 - 3.3)
2.0 (1.4 - 2.7)
Running Current (A)
Power Consumption (W)
RATING (Min. - Max.)
4.1 (1.6 - 5.3)
4.1 (1.6 - 5.3)
4.1 (1.6 - 5.3)
4.1 (1.6 - 5.3)
4.1 (1.6 - 5.3)
4.2 (1.5 - 6.0)
3.0 (1.5 - 4.2)
2.3 (1.5 - 3.2)
RATING (Min. - Max.)
900 (350 - 1160)
900 (350 - 1160)
900 (350 - 1160)
900 (350 - 1160)
900 (350 - 1160)
900 (320 - 1320)
660 (320 - 920)
510 (320 - 700)
Running Current (A)
Power Consumption (W)
RATING (Min. - Max.)
6.6 (1.7 - 5.9)
6.6 (1.7 - 5.9)
6.6 (1.7 - 5.9)
6.6 (1.7 - 5.9)
6.6 (1.7 - 5.9)
5.2 (1.5 - 7.2)
3.8 (1.5 - 6.4)
3.1 (1.5 - 4.6)
RATING (Min. - Max.)
950 (370 - 1300)
950 (370 - 1300)
950 (370 - 1300)
950 (370 - 1300)
950 (370 - 1300)
1140 (320 - 1570)
830 (330 - 1400)
680 (320 - 1010)
HEATING CAPACITY TABLE
Operating
Status
2-Room
1-Room
Combination of
Indoor Units
A
B
12
09
12
07
09
09
09
07
07
07
12
OFF
09
OFF
07
OFF
Heating Capacity (kW)
A
2.5
2.8
2.2
2.5
2.2
3.9
3.0
2.4
B
1.9
1.6
2.2
1.9
2.2
OFF
OFF
OFF
RATING (Min. - Max.)
4.4 (1.9 - 5.4)
4.4 (1.9 - 5.4)
4.4 (1.9 - 5.4)
4.4 (1.9 - 5.4)
4.4 (1.9 - 5.4)
3.9 (1.2 - 4.6)
3.0 (1.2 - 4.2)
2.4 (1.2 - 3.3)
[4] ELECTRICAL PARTS
Compressor
Outdoor fan motor
Fuse 1, 101
Fuse 6
Fuse 3, 4
Fuse 5
DA130A1F-28F
MLB051
—
—
—
—
Hermetically sealed DC twin rotary
QFS-GA065JBZZ(20A,250V)
QFS-GA064JBZZ(1A,250V)
QFS-GA062JBZZ(3.15A,250V)
QFS-GA063JBZZ(2A,250V)
1–3
AEX2M14LR
[5] WIRING DIAGRAMS
from CONTROL PWB CN14
from ELECTROLYTIC CAPACITOR C10(+)
from ELECTROLYTIC
CAPACITOR C10(-)
from COMPRESSOR TERMINAL
W "ORANGE"
from COMPRESSOR TERMINAL
U "RED"
from COMPRESSOR TERMINAL
V "WHITE"
from CONTROL PWB BCN1
IPM P.W.B.
1–4
RELAY P.W.B.
from CONTROL
P.W.B. "CN9A"
from 4 WAY VALVE
from IPM "U", "V", "W"
from
1–5
PO
R
WE
SU
PP
P
LY
RELAY P.W.B and POWER SUPPLY P.W.B.
.W
.B.
from ACTIVE FILTER MODULE
from IPM P.W.B. "CN114"
POWER SUPPLY P.W.B.
from DIODE BRIDGE DB1 "~"
from DC FAN MOTOR
from TERMINAL BOARD
POWER SUPPLY "L"
from TERMINAL BOARD
UNIT C "1"
from TERMINAL BOARD
UNIT C "N"
from CONTROL P.W.B. "BCN16"
from CONTROL BOX
from CONTROL P.W.B. "BCN17"
from CONTROL P.W.B. "BCN15"
from TERMINAL BOARD
POWER SUPPLY "N"
AEX2M14LR
CONTROL P.W.B and DISPLAY P.W.B
1–6
from POWER SUPPLY
P.W.B. "CN17"
from IPM PWB "CN101"
from SUCTION THERMISTOR
from THERMISTOR
COMP. TENP.
from EXPANSION VALVE B
HEAT EXCHANGER TEMP.
from HEAT SINK THERMISTOR
OUT DOOR TEMP.
from EXPANSION VALVE A
SUCTION TEMP.
CONTROL P.W.B
DISPLAY P.W.B
from RELAY
P.W.B. "CN9"
from POWER SUPPLY P.W.B. "CN16"
from POWER SUPPLY P.W.B. "CN15"
from TERMINAL BOARD
UNIT A - "N"
UNIT A, B - "2"
from TERMINAL BOARD
POWER SUPPLY
AEX2M14LR
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㧮㧯㧺㧝
㧞㧜㧜㨗㧲
㧞㧜㧜㨗㧲
㧾㧞㧜㧡
㧾㧞㧜㧠
㧝
㨆
㧯㧺㧝㧜㧝
㧾㧝㧜㧣 㧾㧝㧝㧞
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㧞㧡㨂 㧯㧟㧤㧘㧯㧟㧥㧘㧯㧠㧜㧦 㧾㧡㧞㧘㧾㧡㧟㧘㧾㧡㧠㧦
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㧜㧚㧝Ǵ㧲
㧮
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㧺
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㧞㧡㨂 㧝㧜㨂
㧼
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㧾㧢㧢 㧝㧜㨗 㧔㧯㧺㧕 㧝
㧞
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㧦㧝㧜㨗
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㧤
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㨆㧰㧝㧜㧝
㧽㧹㧝㧜㧝㧔㧵㧼㧹㧕
㧾㧝㧜㧜
㧾㧝㧜㧜㧦㧡㨃˴㧜㧚㧜㧞㧜 㧾㧝㧝㧟
㧯㧺㧝㧝㧠
㧝㧤㨗㧲㨆
㨑
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㧯㧝㧝㧥 㧝㧢
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㧼
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㧢㧟㧜㨂˴ 㧡㧜㨂
㧯㧝㧞㧝 㧯㧝㧞㧜
㧞㧜㧭 㧞㧡㧜㨂
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㨀㧺
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㧯㧝㧜
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㧲㧯㧢
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㨀㧼
㧠㧞㧜㨂
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㨅㧱㧸㧸㧻㨃 㨅㧱㧸㧸㧻㨃
㧯㧺㧝㧟 㧝 㧞 㧟 㧠 㧡 㧢
㧵㨛
㧲㧯㧤
㧸㧞
㧭㧲㧝
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㧿㧭㧯㨀㧟㧞㧠㧞㧜
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㧝㧡㨂
㧝㧭
㧠 㧟 㧞 㧝 㧯㧺㧝㧠
㧝 㧞 㧟 㧠 㧡 㧢 㧮㧯㧺㧝㧟
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㧡㧢㧜㧲
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㧝
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㧞㧡㧜㨂
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㧝㧛㧠㨃
㧾㧞㧞 㧾㧞㧝
㧜㧚㧜㧝Ǵ㧲㧝㧜㨗
㧾㧝㧟㧰 㧞㧞㧜㨜㧲
㧝㧟
㧾㧝㧟㧭
㧝㧚㧢㧡㨗㧲
㧾㧟㧜
㧾㧞㧠
㧯㧞㧢
㧟
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㧯㧞㧟 㧰㧥 㧾㧝㧣
㧜㧚㧜㧟㧟Ǵ㧲
㧥
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㧾㧝㧟㧯
㧲㧮㧟
㧢㧤㨗 㧞㧡㨂
㧗 㧡㧜㨂 㧞㨃
㧝㧜 㧯㧞㧣
㧗 㧗 㧗
㧾㧞㧟 㧯㧟㧞
㧟㧠㧚㧤㨗㧲
㧝㧝 㧟㧡㨂
㧙 㧝㧜Ǵ㧲 㧝㧜
㧝㧤㨂
㧙 㧙 㧙
㧡㨂
㧾㧟㧡
㧝㧛㧠㨃
㧝㧡㧜Ǵ㧲
㧾㧝㧤
㧾㧟㧢
㧤 㧝 㧞 㧟 㧠
㧵㧯㧤
㧰㧝㧝
㧤
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㧰㧝㧢
㧵㧯㧠
㧾㧟㧟
㧾㧟㧣
㧝㧚㧡㨗
㧾㧠㧜
㧯㧞㧤 㧯㧞㧥㧾㧞㧣
㧿㨀㧾㧙㧸㧠㧣㧞
㧷㧵㧭㧣㧤㧜㧡㧭㧼㧵 㧡㨂
㧝㧛㧠㨃
㧞㧡㨂 㧞㧡㨂㧝㧜㨗
㧟
㧝㨗
㧡㧗
㧰㧝㧣 㧝㧚㧤㨗
㧢
㧣 㧝㧜 㧥
㧵㧯㧣
㧞
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㧝㧤㨂
㧷㧵㧭㧟㧟㧥㧲
㧰㧝㧡
㧣㧤㧜㧡
㧾㧟㧞
㧞㧿㧭
㧗 㧯㧟㧠
㧠㧙
㨆㧰㧝 㧝㧡㧤㧢㧳
㧝㧞
㧝㧜㨂
㧡
㧯㧞㧠
㧙 㧝㧜㧜Ǵ㧲
㧯㧟㧟
㧵㧯㧡 㧯㧡㧤 㧞㧡㨂 㧾㧟㧤
㧗
㧜㧚㧝Ǵ㧲 㧝㧜㨗
㧜㧚㧝Ǵ㧲
㧾㧞㧜 㧟㧟㧜㧜㨜㧲
㧙
㧢
㧯㧡㧢 㧯㧡㧣
㧞㧡㨂
㧝㧛㧠㨃 㧟㧚㧟㨗
㧯㧡㧥
㧽㧠
㧯㧟㧜 㧾㧞㧤 㧯㧟㧝
㧝㧛㧠㨃 㧰㧝㧜
㧾㧟㧝
㧢㧤㧜
㧾㧟㧠 㧞㧡㨂 㧞㧡㨂
㧡㧜㨂
㧟㧡㨂㧝㧜㨗 㧜㧚㧝Ǵ㧲
㧷㧾㧭㧝㧜㧞㧿
㧲㧮㧝
㧝㧛㧠㨃 㧝㧛㧠㨃 㧜㧚㧝Ǵ㧲 㧜㧚㧝Ǵ㧲
㧾㧝㧠
㧝㧡㧜Ǵ㧲 㧞㧡㨂
㧜㧚㧜㧝Ǵ㧲
㧠㧚㧢㧠㨗㧲㧥㧚㧡㧟㨗㧲
㧾㧞㧥 㧝㧛㧠㨃
㧾㧝㧢
㧠㧚㧣㨗
㧾㧝㧡
㧽㧟
㧯㧞㧝 㧟㧚㧟
㧯㧞㧡
㧟㧚㧟
㧢㧤㧜㨜㧲
㧠㧣㧜㨜㧲 㧝㧛㧞㨃 㧝㧛㧞㨃
㧯㧝㧣
㧯㧝㧤
㧲㨁㧿㧱㧡
㧞㧭 㧞㧡㧜㨂
㧡㨂
㧲㧮㧞
㧝
㧟
㧤
㧣
㧢
㧡
㨀㧴㧞
㧠
㧔㨔㨍㨑㨠
㨑㨤㨏㨔㨍㨚㨓㨑㧕 㧟
㧞
㨀㧴㧝
㧔㨏㨛㨙㨜㨞㨑㨟㨟㨛㨞㧕㧝
㧔㨟㨡㨏㨠㨕㨛㨚˴㧕
㨀㧴㧢
㧔㧿㨁㧯㨀㧵㧻㧺˴㧭㧕
㨀㧴㧣
㧔㧿㨁㧯㨀㧵㧻㧺˴㧮㧕
㧺
㧭
㧮
㧡
㧯㧺㧢
㧔㧾㧱㧸㧭㨅˴㧼㨃㧮㧕
㧲㧯㧣
㧡
㧯㧺㧥 㧯㧺㧥㧭
㧡
㧞
㧠
㧠
㧝
㧟
㧞
㧝
㧡
㧠
㧟
㧞
㧝
㧤
㧯㧺㧟
㧟
㧵㧯㧝㧞
㧷㧵㧰㧢㧡㧜㧜㧠㧭㧼
㧾㨅㧝
㧯㧠㧭
㧞㧣㧡㨂
㧜㧚㧜㧟㧟Ǵ㧲
㧾㧤㧭
㧝㨃
㧝㧜㧜
㧯㧣
㧽㧝
㧷㧾㧯㧝㧜㧞㧿
㧡㧜㨂㧝㧜㧜㧜㨜㧲
㧾㧥
㧡㧚㧢㨗
㧞 㧼㧯㧝 㧟
㧼㧯㧤㧝㧣㧝㧢
㧠
㧡㨂
㧞㧡㧜㨂
㧟㧚㧝㧡㧭
㧲㨁㧿㧱㧟
㧯㧝㧡
㧯㧝㧟
㧠
㧯㧝㧢
㧞
㧯㧝㧠
㧯㧢
㧜㧚㧜㧝Ǵ㧲
㧡㧜㨂
㧝
㧾㧢
㧾㧠㧝㧛㧞㨃 㧝㧛㧞㨃
㧝㧡㧜㨗 㧝㧡㧜㨗
㧰㧞
㧾㧞㧜㧥
㧝㧜㨗
㧾㧞㧝㧝
㧝㧜㨗
㧾㧞㧝㧜
㧝㧜㨗
㧰㧡
㧾㧣
㧝㧛㧞㨃
㧾㧡 㧝㧡㧜㨗 㧝㧛㧞㨃
㧝㧡㧜㨗
㧰㧠
㧟 㧝 㧯㧺㧠
㧠㧙㨃㧭㨅
㨂㨍㨘㨢㨑
㧯㧝㧞
㧯㧝㧝㧘㧯㧝㧟㧦 㧯㧝㧝
˴㧠㧣㧜㧜㨜㧲
㧞㧡㧜㨂
㧟 㧝 㧯㧺㧝
㧾㨅㧝
㧠
㧾㧞㧝㧞
㧝㧜㨗
㧯㧢㧣
㧾㧞㧝㧟
㧾㧞㧝㧠
㧡㧜㨂
㧝㧜㨗
㧝㧜㨗
㧯㧢㧢 㧜㧚㧜㧝Ǵ㧲
㧡㧜㨂
㧞㧚㧞㨗 㧾㧞㧝㧡 㧜㧚㧜㧝Ǵ㧲
㧞㧚㧞㨗 㧾㧞㧝㧢
㧡㨂
㧮㧯㧺㧝㧝
㧞
㧟
㧠
㧝
㧮㧸㨁㧱
㧻㧾㧭㧺㧳㧱
㧞
㧯㧝㧞㧘㧯㧝㧠㧦
㧝㧜㧜㧜㧜㨜㧲
㧞㧡㧜㨂
㧮 㧭 㧮㧾㧻㨃㧺
㧮㨀㧝
㧮㧸㨁㧱
㧺㧾㧝
㧞㧡㧜㨂
㧞㧜㧭
㧿㧭㧝
㧸㧢
㧮㨀㧞
㨀㧠
㨀㧝
㧾㧱㧰
㧳㧾㧱㧱㧺
㧞
㧟
㧠
㧝
㧯㧺㧝㧝
㧸㧱㧰㧞
㧸㧱㧰㧝
㧼㨁㧹㧼˴㧰㧻㨃㧺
㧿㨃
㨃㧵㧾㧱˴㧯㧴㧱㧯㧷
㧿㨃
㧿㨃㧞
㨃㧵㧺㨀㧱㧾˴㧯㧻㧻㧸
㧔㧰㧵㧿㧼㧸㧭㨅˴㧼㨃㧮㧕
㧔㨀㧱㧾㧹㧵㧺㧭㧸˴㧮㧻㧭㧾㧰˴㧭㧕
㧮㧾㧻㨃㧺
㧮㧾㧻㨃㧺
㧾㧞
㧝㧛㧠㨃
㧡㧝㧜㨗
㧾㧥㧤㧲
㧯㧝
㧞㧣㧡㨂
㧝Ǵ㧲
㧾㧥㧤㧱
㧯㧞
㧞㧣㧡㨂
㧝Ǵ㧲
㧾㧥㧤㧳
㧯㧟
㧞㧣㧡㨂
㧝Ǵ㧲
㧲㨁㧿㧱㧝
㧾㧥㧤㧰
㧾㧟
㧝㧛㧠㨃
㧟㧚㧥㨗
㧾㧝
㧝㧛㧠㨃
㧡㧝㧜㨗
㧾㧥㧤㧯
㧟
㧾㧥㧤㧮
㧸㧠
㧾㧥㧤㧭
㧝
㧯㧤㧢㧲
㧟
㧯㧡㧡㧲
㧮㧯㧺㧝㧢
㧯㧤㧢㧱
㧸㧟
㧯㧡㧡㧳
㧮㧸㨁㧱
㧢㧤㧜Ǵ㧲
㧯㧤㧢㧰
㧺㧾㧞
㧰㧮㧝
㧯㧤㧢㧭
㧝
㧯㧤㧢㧮
㧔㧼㧻㨃㧱㧾˴㧿㨁㧼㧼㧸㨅˴㧼㨃㧮㧕
㧯㧡㧡㧱
㧮㧾㧻㨃㧺
㧢㧤㧜Ǵ㧲
㧯㧤㧢㧯
㨀㧞
㧯㧡㧡㧰
㧾㧞㧞㧠
㧲㧯㧠
㧯㧡㧡㧮
㧮㧸㨁㧱
㧰㧝㧞 㧾㧝㧥
㧯㧡㧡㧯
㧮㧾㧻㨃㧺
㧾㧟㧞㧘㧾㧟㧟㧦㧝㧛㧞㨃㧞㧣㧜㨗㧲
㧻㧾㧭㧺㧳㧱
㧮㧾㧻㨃㧺
㧾㧞㧢
㧠㧚㧢㧠㨗㧲
㧝㧛㧠㨃
㧾㧞㧞㧟
㧾㧞㧠㧜˴㧝㧜㨗
㧳㧾㧱㧱㧺㧛㨅㧱㧸㧸㧻㨃
㧾㧥㧣㧴
㧳㧾㧱㧱㧺㧛㨅㧱㧸㧸㧻㨃
㧞㨗
㧝㧛㧠㨃
㧯㧡㧡㧭
㧾㧞㧢㧞
㧝㧜㨗
㧔㧼㧻㨃㧱㧾˴㧿㨁㧼㧼㧸㨅㧕
㧯㧤㧢㧳
㧾㧞㧞㧞
㧝㧚㧤㨗
㧾㧠㧡
㧾㧠㧟
㧝㨗
㨃㧴㧵㨀㧱
㨄㧝
㨄㧜
㨂㧿㧿
㧼㧠㧝
㧼㧠㧞
㧾㧿㨀
㧼㧠㧟
㧼㧠㧠
㧼㧠㧡
㧼㧠㧢
㧼㧠㧣
㧼㧡㧜
㧼㧡㧝
㧼㧢㧜
㧼㧢㧝
㧼㧢㧞
㧼㧢㧟
㧼㧢㧠
㧼㧢㧡
㧼㧢㧢
㧼㧢㧣
㧭㨂㧿㧿
㧭㨂㧯㧯
㧭㨂㧾
㧼㧞㧟㧔㧮㧕
㨂㧯㧯
㧼㧞㧞㧔㧻㧕
㧼㧞㧝㧔㨅㧕
㧼㧞㧜㧔㨃㧕
㧼㧝㧣
㧼㧝㧢
㧼㧝㧡
㧼㧝㧠
㧼㧝㧟
㧼㧝㧞
㧼㧝㧝
㧼㧝㧜
㧼㧜㧣
㧼㧜㧢
㧼㧜㧡
㧼㧜㧠
㧼㧜㧟
㧼㧜㧞
㧼㧜㧝
㧼㧜㧜
㨂㧯㧯
㨂㧿㧿
㧯
㧾㧠㧝
㧝㨗
㧾㧠㧞
㧝㨗
㧞㧡㨂
㧜㧚㧝Ǵ㧲㧯㧠㧝
㧡㧜㨂
㧝㧜㧜㧜㨜㧲
㧯㧡㧜
㧡㧜㨂
㧝㧜㧜㧜㨜㧲
㧯㧠㧥
㧡㧜㨂
㧝㧜㧜㧜㨜㧲㧯㧠㧤
㧯㧺㧝㧣
㧯㨀㧝
㧯㧤㧢㧴
㧾㧝㧜㧥㧾㧝㧜㧤
㧺
1–7
㧾㧝㧝㧝㧾㧝㧝㧜 㧾㧝㧜㧤㧙㧾㧝㧝㧝㧦
㧝㧛㧠㨃
㧟㧟
㧭㧱㧙㨄㧞㧹㧝㧠㧸㧾˴㧯㧵㧾㧯㨁㧵㨀˴㧰㧵㧭㧳㧾㧭㧹
AEX2M14LR
AEX2M14LR
Manual
CHAPTER 2. EXPLANATION OF CIRCUITService
AND OPERATION
AEX2M14LR
[1] BLOCK DIAGARM
Power supply circuit
1A
Fuse
Smoothing circuit
Filter circuit
Active filter circuit
20 A
Fuse
AC power
CPU oscillator circuit
DC power supply circuit
DC over voltage detection circuit
Expansion valve A drive circuit
Expansion valve A
Expansion valve B drive circuit
Expansion valve B
Expansion valve C drive circuit
Expansion valve C
4-way valve relay drive circuit
4-way valve
Outdoor fan motor drive circuit
Outdoor fan motor
Power transistor module drive circuit
Power transistor module
3.15 A
Fuse
2A
Fuse
20 A
Fuse
Unit - unit wiring
(AC power and serial
signals)
Serial I/O circuit
CPU reset circuit
CPU
Compressor
DC overcurrent detection circuit
AC overcurrent detection
Current transformer
Compressor thermo. circuit
Compressor thermistor
(RE)
CN8A
Heat exchanger pipe thermo. circuit
Heat exchanger pipe thermistor
(OR)
CN8A
Outdoor temp. thermo. circuit
Outdoor temperature thermistor
(G)
CN8A
Suction pipe thermo. circuit
Suction pipe thermistor
(BK)
CN8A
Heat sink thermo. circuit
Heat sink thermistor
(BK)
CN8B
Unit A thermo. circuit
Thermistor unit A
(BL)
Unit B thermo. circuit
Thermistor unit B
(WH)
LED drive circuit
LED
Pump down switch circuit
Wire check switch circuit
Position detection circuit
Compressor
Thermal fuse circuit
Thermal fuse in terminal board
2–1
CN5
Suction thermistor CN8C
AEX2M14LR
[2] FUNCTIONS
1. FREQUENCY CONTROL
2. OVER CURRENT PROTECTION
1) AC current peak control
DC over current detection, AC over current detection. To protect
against over current due to sudden change in load, the compressor is
stopped if 24A DC is exceeded in the DC section. If the set value of
AC current is exceeded in the AC section, the compressor is stopped.
90 seconds after the compressor has been stopped, another starting
try will be made. Three retries are allowed. On the fourth retry, a complete stop request signal is sent to the indoor unit, and the outdoor unit
will remain stopped until the indoor operation is stopped. DC over current is detected by the power module. AC over current is detected by
CT1, on the outdoor PWB.
Cooling mode
13.6A
Heating mode
13.6A
2) Prevention control of outdoor heat exchanger overheating
If the temperature of the outdoor heat exchanger exceeds the overheating prevention line 1 or 2 during cooling, the operating frequency is lowered by approximately 5 to 15Hz. After that, the
frequency is lowered approximately 5Hz once every 60 seconds or
approximately 15Hz once every 120 seconds. When the temperature of the outdoor heat exchanger goes below the overheating
prevention clear line, the frequency is raised by approximately 5Hz
once every 60 seconds, and normal operation is restored. If the frequency is lowered to minimum frequency without the temperature
of the outdoor heat exchanger decreasing and this condition lasts
for 1 minute, the compressor will be stopped.
Overheating Prevention line 1
55C
Overheating Prevention line 2
57C
Overheating Prevention clear line
54C
Cooling mode
16.0A
3. COMPRESSOR PROTECTION CONTROL
If the temperature of the compressor exceeds 113C, the compressor
is stopped. In this case, the outdoor fan is not stopped until the temperature of compressor drops below 99C. In 90 seconds after the
compressor is stopped, if the temperature is below 90C, another
starting try will be made. Three retries are allowed. On the fourth retry,
a complete stop request signal is sent to the indoor unit, and the outdoor unit will remain stopped until the indoor operation is stopped.
Lower 5Hz once every
60 seconds
Lower 15Hz once
every 120 seconds
4. POWER TRANSISTOR MODULE PROTECTION
3) Prevention control of compressor overheating
If the temperature of the compressor exceeds approximately 108
C, the operating frequency is lowered approximately 5Hz. After
that, the frequency is lowered approximately 5Hz once every 60
seconds. When the compressor temperature drops below approximately 108C, the frequency is raised approximately 5Hz once
every 60 seconds, and normal operation is restored. If the frequency is lowered to minimum frequency without the temperature
of the compressor decreasing, and this condition lasts for 1 minute,
the compressor will be stopped.
If the temperature of the heat-sink exceeds 90C, the compressor is
stopped. In this case, the outdoor fan does not stop, and when the
temperature of the heat-sink decreases to 80C 180 seconds after
operation is stopped, another try will be made. Three retries are
allowed. On the fourth retry, a complete stop request signal is sent to
the indoor unit, and the outdoor unit will remain stopped until reset is
performed. At this time, the 3-minutes delay for control of the outdoor
unit will not function; therefore, do not cancel by removing the plug and
cutting the power. Also if the temperature of the heat-sink exceeds
100C, a complete stop request signal is sent to the indoor unit, and
the outdoor unit will remain stopped until reset is performed. At this
time, the 3-minutes delay for control of the outdoor unit will not function; therefore, do not cancel by removing the plug and cutting the
power.
4) Prevention control of indoor heat exchanger overheating
Two minutes after room several decrease If the temperature of any
of indoor heat exchangers exceeds the overheating prevention line
1 or 2 during heating, the operating frequency is lowered to minimum frequency. When the temperature of all of indoor heat
exchangers go below the overheating prevention line 1, the frequency is raised by approximately 5Hz once every 60 seconds,
and normal operation is restored. If the condition that the frequency
is minimum lasts for 2 minutes, the compressor will be stopped.
5. SERIAL SIGNALS
Serial signals consist of all 96-bit signals. If the condition as outdoor
unit unable to receive a serial signal from the indoor unit continues for
30 seconds, it closes the expansion valve which corresponds to the
room which can not be communicated. If all indoor units can not communicate with the outdoor unit, the compressor is stopped.
<when normal >
If the temperature of any of indoor heat exchangers exceeds the overheating prevention line 1 or 2 during heating, the operating frequency
is lowered by approximately 5 to 15Hz. After that, the frequency is lowered approximately 5Hz once every 60 seconds or approximately
15Hz once every 90 seconds. When the temperature of all of indoor
heat exchangers go below the overheating prevention line 1, the frequency is raised by approximately 5Hz once every 60 seconds, and
normal operation is restored. If the condition that the frequency is minimum lasts for 2 minutes, the compressor will be stopped.
54ºC
(59ºC)
47ºC
(60ºC)
44ºC
(57ºC) Overheating
prevention
line 1
900
2100
6. THERMISTOR OPEN OR SHORT
When compressor, heat exchanger, outdoor thermistor, suction thermistor (CN8A) are in OPEN or SHORT condition, even if they are in
the condition which an operation signal is transmitted from indoors, the
compressor will not start. If any suction thermistors (CN8C) become
OPEN or SHORT resistance, the protective procedure will work only
for the cycle corresponding to the malfunctioning suction thermistor.
Overheating
prevention line 2
57ºC
(62ºC)
7. MISWIRING CHECK
“Mis-wiring check” is conducted by detecting the indoor heat
exchanger temp. For example, when the expansion valve for only
room A is open, and the wiring is correct, the indoor heat exchanger
temp for room A will reduce. If the wiring is incorrect, the indoor heat
exchanger temp for a different room will reduce.
51ºC
(57ºC)
48ºC
(54ºC)
When ON
(When OFF)
Heating mode
16.0A
8. SAFETY TIME
5200
When the unit is operated by the remote control after the breaker is
turned on, the safety device of the compressor will work and the compressor will not operate for 90 seconds.
7200
2–2
AEX2M14LR
9. PUMP DOWN SWITCH
More than
20 min.
When the PUMP DOWN SWITCH (SW1) is pressed for 5 seconds or
more, the total A/C system will start its TEST RUN automatically and
the compressor frequency will be 48.3 Hz. When operating only the
outdoor unit (cooling 48.3 Hz fixed mode) To make only the outdoor
unit run in cooling mode, and apply a voltage of 230 V AC to N and L
on the terminal board and push the pump down switch. (SW1) (Avoid
operating the outdoor unit alone for long periods of time.)
Heating
operation
start
10. CONTROL OF COMPRESSOR OR AND EXPANSION VALVE
For 90 seconds after turning on the AC power, the compressor will not
be activated even if indoor units request the compressor to do so. If
the compressor receives a request from one or more indoor units after
90 seconds have passed, it will be turned on and the expansion valve
corresponding to the requesting indoor unit will be opened. When the
indoor unit of a room requests for the cooling operation to the outdoor
unit and it runs responding to the request, requests for the heating
can't be accepted if the indoor units in other rooms send individual
requests. If the indoor unit in another room sends a request for the
heating operation, the operation lamp and timer lamp of the indoor unit
in that room start flashing in turn to inform that the unit is in the standby
mode. If the operation in one room is stopped while the indoor unit in
another room is in the stand-by mode, the operation mode requested
by the indoor unit which is now in the stand-by mode will be accepted.
At this time, the compressor will be temporarily stopped to switch the
four- way valve and restart after 90 seconds. During the cooling or dry
operation, the expansion valve corresponding to the indoor unit that is
not running is closed. Therefore, the refrigerant will not flow into those
units However, if the heating operation is in progress, it is possible that
it flows into indoor units which are out of operation depending on the
cycle conditions. As a result, the indoor exchanger may be heated up
even if it is not activated. This is not abnormal. When the operations in
all rooms are stopped, the compressor is off and the expansion valves
in all rooms are fully opened.
More than
20 min.
More than
20 min.
Defrosting
Defrosting
Max. 10 min. Max. 10 min.
3) During defrosting
When defrosting begins, the compressor stops. Approximately 1
minutes later, the compressor reactivates in the refrigeration cycle,
and the outdoor heat exchanger is defrosted. Each mode is as follows:
The outdoor fan is s topped
The operating frequency is as shown in the table below.
The indoor fan is s topped.
All expansion valve are open.
for 5 minutes 3900 rpm
after that 3700 rpm
4) Defrost stop
When defrosting time exceeds 10 minutes When the temperature
of the outdoor heat exchanger rises above approximately 15C
Defrost stop is determined by either of the above conditions, and
the compressor is stopped. At the same time, the outdoor fan go
ON. The compressor is reactivated in the heating cycle 1 minutes
after it was stopped, and normal control resumes.
11. DEFROST OPERATION
12. Power factor module Output voltage
1) Overview
If a voltage error over 450V is detected at power factor module output
voltage, the compressor is stopped for 3 minutes. In this case, the outdoor fan does not stop for 3 minutes, and another try will be made.
Three retries are allowed. On the fourth retry, a complete stop request
signal is sent to the indoor unit, and the outdoor unit will remain
stopped until reset is performed. At this time, the 3 minutes delay for
control of the outdoor unit will not function; therefore, do not cancel by
removing the plug and cutting the power.
Defrosting begins during heating if the conditions for compressor
operation time and outdoor heat exchanger temperature are met.
When defrosting begins, the indoor and outdoor fans stop. Defrosting stops when the temperature of the outdoor heat exchanger
goes above approximately 15C or defrosting time exceeds 10 minutes.
Defrost
mask time
Heating
begins
Defrost
mask time
Defrost
mask time
13. Winter cool
Cooling operation is available during the winter season by the built in
winter cool function.
Lower limit of outdoor temperature range is -10C DB.
Defrosting
Max. 10 min.
Defrosting
Max. 10 min.
When the outside air temperature is low, the outdoor unit fan operates
at slower speed.
NOTE: Built-in protect drive may work when outdoor temperature falls
below 21C DB, depending on conditions.
2) Defrosting
If the compressor operation time is more than 20 minutes in the
heating mode and the outdoor air temperature and outdoor heat
exchange temperature satisfy the defrosting conditions, the
defrosting operation is started. When the defrosting operation is
started, the indoor fan starts to run intermittently. When the outdoor
heat exchanger temperature reaches approx. 15C or above or
when the defrosting time exceeds 10minutes, the defrosting operation is quit.
2–3
AEX2M14LR
[3] ACTIVE FILTER CIRCUIT
This circuit uses Active Filter Module and IPM as the figure below for the high efficiency operation of compressor.
Active Filter
Choke coil
Rectification
circuit
AC
+
Noise filter
circuit
Sine wave current
ON/OFF
Voltage raise signal
Compressor
Driving signal
Compressor
IPM
Positional
detection
IPM
Control
source
Control source
IC1
1. Active Filter
In the case the direct current is obtained by the diode bridge and smooth capacitor from the commercial power source, the current wave shape will be
the pulse shape at the peak of the voltage wave shape as shown in the figure below. For this reason, the harmonic current will be generated and at
the same time the power factor will be deteriorated. While monitoring the AC input voltage in the control circuit, in order to be the same phase and
wave shape as this voltage wave shape, IGBT is made ON/OFF by the carrier frequency of approximately 20 kHz. By adoption of this Active Filter,
the current wave shape can be made to the sine wave synchronized to the commercial power source and the power factor can be made to almost
99%. As a result of this, reactor can be disused. Active Filter works for the improvement of power factor and as the countermeasures for the harmonic
current.
Power-supply voltage
(50Hz)
Current waveform
(Before)
Current waveform
(Active Filter)
2. Active Filter Voltage Raise Circuit
The IGBT in the figure below is the switching transistor of the Active Filter. By adding ON signal to the gate of IGBT from the control IC, IGBT turns
ON and the collector current Ic flows. This current flows from the + side of the diode bridge DB to the Choke coil, the - side of the diode bridge DB
through IGBT from the Choke coil L. At this time, energy is stored in the choke coil L. Next, when gate signal of IGBT turned OFF, IGBT will be turned
OFF and the energy stored in L during the ON time of IGBT will be discharged through the diode D, electrolytic capacitor C, load, primary side and the
+ side of DB. Assuming the input voltage of Active Filter (voltage between + and - of DB) as Ei, the output voltage (voltage at the both ends of smooth
capacitor) as Vo, switching cycle of IGBT as T and ON time of IGBT as ton, the voltage between collector emitter of IGBT Vs will be as follows;
Vs= 0 (during ON of IGBT: ton)
Vs= Vo (during OFF of IGBT: T-ton)
Here, assuming no loss in L and IGBT, average value of Vs turns equal to Ei,
Ei = (T-ton)/T x Vo
Therefore
Vo = T/(T-ton) x Ei
As ton is a smaller value than T, output voltage Vo will be higher than input voltage Ei.
2–4
AEX2M14LR
L
+
DB
D
Control
Ei
Vs
IC
Vo
+
RL
C
IGBT
-
L1
(+)
L2
P
(-)
Io
PFC control
1
2
3
4
5
6
BCN13
Active Filter Circuit
3. Active Filter Driving Electronics Circuit
At the operation of compressor, the microcomputer (IC1), as the 50th pin gets “H”, will turn the transistor Q4 ON through the transistor Q3. By this,
18V is supplied to the 3rd pin of connector BCN13 of the Active Filter and the Active Filter will be turned ON.
4. Protection Circuit of Active Filter
In order to prevent from the destruction of Active Filter due to the excessive over output voltage of Active Filter, the Active Filter will be turned OFF
immediately at the abnormal output voltage by monitoring the output voltage. At the same time, the operation of compressor will be stopped. Detection circuit of the abnormal voltage detects the abnormal voltage by inputting the output voltage of Active Filter to the 4th pin of comparator IC (IC5) at
the divided voltage by the resistors (R31, R32 and R33) and comparing with reference voltage. When the output voltage of Active Filter reaches 450V
or higher, the 4th pin of IC5 will be higher than the reference voltage at the 5th pin, the output of comparator will be reversed (HL), the L signal will
be entered at the 52nd. pin of microcomputer (IC1) and the operation of the Active Filter will be stopped.
18V
5V
R36
1M
IC1
52
3
2
12
4
+ 5
0V
R33
270KF
R35
34.8KF
R32
270KF
IC5
C57
0.1u
50V
R34
9.53KF
C56
0.1u
50V
0V
0V
2–5
R31
4.64KF
0V
DC
Voltage
AEX2M14LR
[4] EXPLANATION OF IPM DRIVE CIRCUIT
The power supply for the IPM drive, and the shunt resistor for over current detection, etc., are provided out of the IPM (in control PWB).
1. IPM drive power supply circuit
The power supply for driving the upper-phase IGBT (HU, HV, HW) drive employs a Bootstrap system.
The 15-V power supply for the lower-phase IC is provided by the control printed circuit board (PWB).
1. Brief explanation of Bootstrap system (single power drive system)
To supply power to the upper-phase IC, the microcomputer (IC1) turns ON the lower-phase IGBT (LU, LV, LW).
It results in a charging current that flows through the electrolytic capacitor in each upper-phase IC input and charges the Bootstrap capacitor up to
15V voltage.
The power supply for the subsequent stages is stored when the lower-phase IGBT is ON in common drive control of the compressor.
Initial charge period
P(Vcc)
Charging current group
Bootstrap capacitor
(HU,HV,HW)
HVIC
VDB
U,V,W,
High-voltage-withstanding,
high-speed recovery diode
N-side
IGBT
(LU,LV,LW)
VD
LVIC
VCIN(n)
N(GND)
Bootstrap circuit
2. DC over current detection circuit
When a current about 24A or higher flows through the shunt resistor (R100) on IPM printed circuit board (PWB), the voltage on this resistor is input to
IPM CIN pin (16). Then, the gate voltage of the lower-phase IGBT (LU, LV, LW) inside the IPM turns OFF to cut the over current off. At the same time,
an L output which lasts about 1.8 ms is generated from IPM Fo pin (18), and it results in an L level input to over current detection input pin (53) of the
microcomputer (IC1) and then turns OFF the compressor driving signal output (IC1 from pins (65) to (70)) to the IGBT gate.
SET
Protection circuit status
RESET
(Lower phase)
Internal IGBT gate
About 24A
SC
a1
Output current Ic (A)
SC reference voltage
Sense voltage relative
to shunt resistance
Delay by CR time constant circuit
About 1.8 ms
Error output Fo
2–6
AEX2M14LR
3. 120 energizing control (digital position detection control)
This control system detects the digital position detection signal and adjusts the rate of acceleration/deceleration accordingly. The motor's induced
voltage waveform is input to the comparator in the form of PWM-switched pulse, and a position detection signal is generated as a reference voltage
which is equal to 1/2 of 370 VDC. However, since there is no induced voltage waveform when the PWM waveform is OFF, the microcomputer works
in an internal processing so that detection is enabled only when it is ON. Based on the position signal detected, actual PWM waveform output timing
is determined. Since it does not use a filter circuit, the accuracy of detection. The microcomputer works in an internal processing to eliminate spiky
voltage during the regenerative process. Furthermore, even if the induced voltage is low, position detection is still possible, and it allows sensor-less
operation at low rotation speed in the initial stage of operation. These reduce the starting current and improve reliability of IPM.
Terminal voltage waveform
Reference voltage
(1/2 of DC voltage)
Spiky voltage
(cancelled)
Comparator output waveform
(Position signal waveform)
4. 180 energizing control
This is the control system to moderate the speed by the
current phase difference for higher efficiency and lower
noise of the compressor. The current phase difference
control is the control system paid attention to the interrelation between efficiency and phase gap generated by
the applied voltage of motor and current in the coil of
motor as shown in the figure below.
Motor voltage
Motor current
Efficiency
This control is the forced magnetization system independent of the location of rotor, detecting the phase difference between driving voltage phase and line current
phase flowing in motor coil, and controls the modulation
rate data to get the phase difference at the best efficiency.
Difference of current
and voltage peak
Ტ
Best timing
Ჷ(
Უ
Voltage /Current
phase difference
Concept chart of the current phase difference control
5. DC Current Detection Sensor Circuit
Control of current phase difference is made by reading in the phase difference generated at the both edges of shunt registor (R100) by the compressor electrifying current on the PWB through the Op-amp (IC9) to the microcomputer. This is a control to modulate up to the phase with the best efficiency by comparing the phase of this input current, so called compressor electrifying current, with the compressor driving voltage. In the case that
phase difference between motor voltage and current is large (current delay is large), the control will be made by lowering the compressor modulation
rate data (compressor effective value).
IPM
FUSE 101
250V 20A
P
S
FC1
C121
630v
0.33Ǵ
TU
TV
TW
R201
100KF
N
CIN
C119
1000p
5V
ZD101
R113 18KF
R100
0.02
D8
Z
8
1
IC1
C96
1000P
Y
15V
R200
1K
C97
0.1μ
4
2
+ 3
IC9
0V
Inverter current detection circuit
2–7
R
R202
20KF
R203
2.0KF
5V
R204
200KF
R205
200KF
0V
Y
Z
C
CHAPTER 3. FUNCTION AND OPERATION OF PROTECTIVE PROCEDURES
[1] PROTECTIVE FUNCTIONS AND OPERATIONS
NO.
Function
Operation
Detection time
Description
1
DC over current
2
AC over current
3
Compressor overheat prevention control
4
Compressor high
temperature error
5
Outdoor heat
exchanger overheat
prevention control
Compressor is stopped if a current approximately 24A or more flows in the power transistor module.
Lowers the operating frequency if the compressor AC current exceeds set value
(16.0A). Stops the compressor if the current
exceeds at minimum frequency.
Lowers the operating frequency if the temperature of the compressor thermistor (TH1)
rises above 108C. Compressor is stopped if
the thermistor stay above 108C for 2 minutes at minimum frequency.
Compressor is stopped if the compressor
thermistor is above 113C (Or when TH1
shorts)
Lowers the operating frequency if the temperature of the outdoor heat exchanger rises
above 57C during cooling. Stops the compressor if the temperature stays above 57C
for 2 minutes at minimum frequency
Compressor ia stopped, if heat exchanger or
outdoor thermistor shorts. Close the expansion valve of the corresponding room, if
some suction thermistor shorts.
Compressor is stopped, if compressor or
heat exchanger or outdoor thermistor opens.
Close the expansion valve of the corresponding room, if some suction thermistor
shorts. opens.
Compressor is stopped, if the operating frequency is above 70Hz and the compressor
current is below 0.8A.
INDOOR
If open, while timer LED blinks, operation is
continued. If short, operation is continued.
OUTDOOR
Closes the expansion valve of the corresponding room if the outdoor unit does not
receive a serial signal from one or more
indoor unit for 30 seconds.
Compressor is stopped, if the outdoor unit
does not receive a serial signal from all
indoor units.
Restart condition
Restart
time
In
door
Out
door
During compressor operation
Automatically restarts
after safety time (180
seconds)
4 times
Yes
Yes
During compressor operation
Automatically restarts
after safety time (180
seconds)
4 times
Yes
Yes
During compressor operation
Automatically restarts
after safety time (180
seconds)
No limit
No
No
During compressor operation
Automatically restarts
when thermistor (TH1)
temperature falls below
99C (approximately 30
minutes)
4 times
Yes
Yes
During compressor operation
Automatically restarts
after safety time (180
seconds)
No limit
No
No
When the room
is activated turns
ON and the compressor starts.
Operation OFF
1 time
Yes
Yes
When the room
turns ON and the
compressor
starts.
Operation OFF
1 time
Yes
Yes
During compressor operation
Automatically restarts
after safety time.(180
sec.)
4 times
Yes
Yes
During operation
Automatically restarts
as soon as the serial
communication
becomes possible.
No limit
Yes
Yes
6
Thermistor short
7
Thermistor open
8
AC abnormal current
9
Serial signal error
10
Miswiring check
error
Compressor is stopped, and miswiring check
operation ends.
During miswiring
operation
Miswiring check operation will not restart
automatically.
4 times
Yes
Yes
11
Indoor heat
exchanger overheat
prevention control
Lowers the operating frequency if the temperature of any of indoor heat exchanger
rises high temperature during heating.
Stops the compressor if the temperature stay
high for 2 minutes at minimum frequency.
During compressor operation
Automatically restarts
after safety time.(180
sec.)
No limit
No
No
Compressor stops if DC voltage is 450V or
higher.
During compressor operation
4 times
Yes
Yes
Compressor stops if DC voltage is 270V or
lower.
During compressor operation
4 times
Yes
Yes
12
13
Power factor module (Active Filter)
over voltage error
Power factor module (Active Filter)
low voltage error
3–1
Automatically restarts
after safety time.(180
sec.)
Automatically re-starts
after safety time.(180
sec.)
NO.
Function
Description
Operation
Detection time
Restart condition
Restart
time
In
door
Out
door
When power source frequency cannot be
determined (at startup) or when power
source clock can not be detected for 1 continuous second (at startup).
Operation stops if there is no input of rotation
pulse signal from outdoor unit fan motor for
30 seconds.
At compressor
start up, when in
operation.
Compressor continues
operation without stopping.
None
Yes
Yes
When outdoor
unit fan is in
operation.
Operation OFF or ON.
Yes ✩1
Yes
Yes
14
Power factor module (Active Filter)
clock error
15
Outdoor unit DC fan
error
16
DC compressor
rotation error
Operation stops if rotation of compressor is
abnormal.
During compressor operation
Automatically restarts
after safety time.(180
sec.)
8 times
Yes
Yes
17
IPM overheat prevention control.
IPM high temperature error
The compressor stops if the temperature of
Heat sink exceeds 90C.
During compressor operation
Automatically restarts
after safety time.(180
sec.)
No limit
No
No
18
Thermal fuse error
When thermal fuse in the outdoor terminal
board below.
Operation OFF
1 times
Yes
Yes
✩1 The outdoor unit restarts four times before the indoor unit error is displayed (complete shutdown).
[2] TROUBLESHOOTING GUIDE
1. SELF-DIAGNOS IS FUNCTION AND DISPLAY MODE
1) To call out the content of the self-diagnosis memory, hold down the emergency operation button for more than five seconds when the indoor unit is
not operating.
a) According to the content of the self-diagnosis memory, the Operation LED (main category) and the Plasmacluster Ion LEDs (sub-category)
flash in sync with the Timer LED on the indoor unit.
b) In the event a complete shutdown occurs due to a malfunction, the Operation LED (red), Timer LED (yellow), Plasmacluster Ion LED (blue)
flash to indicate the general information of the generated malfunction.
c) If the power cord is unplugged from the AC outlet or the circuit breaker is turned off, the self-diagnose is memory loses the stored data.
2) Display of detailed self-diagnosis result with main category and sub-category indications When malfunction information is called out, the main category and sub-category of the self-diagnose is result are indicated by the Operation, Timer, and Plasmacluster Ion LEDs on the indoor unit.
Main category
*1: Example of self-diagnosis result displayed on indoor unit: Suction thermistor open-circuit error
Timer LED [yellow]
ON
OFF
Operation LED [red]
ON
OFF
Plasmacluster Ion LED [blue]
Basic flashing cycle due to error
1 sec 1 sec 1 sec
Malfunction No.
5 sec
Figures in ( ) indicate numbers (binary notation) assigned based on the flashing sequence.
Flashing for main category indication
Flashing for sub-category indication
*2: The self-diagnosis display function of the outdoor unit indicates the error information by flashing LED1 on the
outdoor unit according to the content of self-diagnosis.
The self-diagnosis display function of the outdoor unit is active only for about 3 to 10 minutes after self-diagnosis is
performed during operation, and the display returns to normal condition after this display period.
The content of self-diagnosis cannot be called out by the self-diagnosis display function of the outdoor unit.
Example of self-diagnosis display on outdoor unit : Compressor high-temperature abnormality
ON
OFF
0.5 sec 0.5 sec 0.5 sec 0.5 sec 0.5 sec 0.5 sec 0.5 sec 0.5 sec 0.5 sec
3–2
0.5 sec 0.5 sec 0.5 sec 0.5 sec
Sub-category
3–3
2 time
Indoor/outdoor units in
complete shutdown
8 time
Indoor/outdoor units in
complete shutdown
Indoor/outdoor units in
complete shutdown
Indoor/outdoor units in
complete shutdown
7 time
Indoor/outdoor units in
complete shutdown
12 time
11 time
9 time
6 time
Indoor/outdoor units in
complete shutdown
Indoor/outdoor units in
complete shutdown
5 time
1 time
Indoor/outdoor units
in complete shutdown
Indoor unit in operation
Outdoor unit in temporary
stop
Normal
flashing
Indication by
LED1 on
outdoor unit
*2
Indoor/outdoor units in
operation
Status of
indoor/outdoor
units
Floor / ceiling
for 5 seconds
-1
-2
-3
-4
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Thermistor Unit A - C thermistor open
circuit error
-4
-5
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Cycle
temperature
Outdoor unit
DC Fan
9 -4
11 -0
12 -0
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
(1)Replace the outdoor control board assembly.
(2)Reattach
(3)Check the wiring between units.
(1)Check to make sure outdoor unit thermistor TH2 (exchange) and TH3 (pipe (1)Correct the installation.
temperature) are installed in correct portions.
(2)Check if the refigerant volume is abnomally low.
(2)Change the speccified amount of refrigerant.
(3)Check the 4-way valve for proper operation.
(3)Replace the 4-way valve.
4 way valve error
or Gas leak error
(1)Check the thermal fuse in terminal board (for Power supply)
(2)Check connector CN5 of the outdoor unit.
(1)Replace terminal board for Power supply
(2)Replace the outdoor unit control PCB assembly.
(1)Correct the installation.
(2)Replace the outdoor unit fan motor.
(3)Replace the outdoor unit control PCB assembly.
(4)Replace the outdoor unit control PCB assembly.
(3)Correct refrigerant clogs. (Stop valve,pipe,expansion valve)
(1)Check the expansion valve. (unit A - C)
(2)Are four expansion valves connected by mistake
(3)Check the wiring between units.
Abnormal wire check error
(1)Check connector CN3 of the outdoor unit DC fan motor for secure installation.
(2)Check the outdoor unit fan motor for proper rotation.
(3)Check fuse FUSE5.
(4)Outdoor unit control PCB
(1)Replace the outdoor unit control PCB assembly.
(2)Charge the specified amount of refrigerant.
Outdoor unit DC fan rotation error
(1)Ensure unobstructed air flow from the outdoor unit air outlet.
(2)Check the outdoor unit fan motor.
(1)Replace the outdoor unit control PCB assembly.
(2)Charge the specified amount of refrigerant.
(3)Correct refrigerant clogs. (Stop valve,pipe,expansion valve)
(1)Replace the outdoor IPM PWB
(1)Ensure unobstructed air flow from the outdoor unit air outlet.
(2)Check the outdoor unit fan motor.
(1)Replace the outdoor unit IPM PWB assembly.
(1)Replace the outdoor unit IPM PCB assembly.
(2)Correct the installation (tighten the screws). Apply silicon grease.
(3)Replace the outdoor unit fan motor.
(4)Replace the outdoor unit IPM PCB assembly.
(5)Replace the compressor.
(4)Replace the outdoor unit control PCB assembly.
(2)Replace the outdoor unit thermistor assembly.
(3)Replace the outdoor unit thermistor assembly.
(1)Correct the installation.
(1)Change the heat-sink thermistor.
_
_
_
(1)Ensure unobstructed air flow from the outdoor unit air outlet.
(2)Connect power supply of proper voltage.
(3)Charge the specified amount of refrigerant.
(4)Replace the outdoor unit compressor thermistor assembly.
(5)Replace the expansion valve coil,expansion valve or outdoor unit
control PCB assembly.
AC current deficiency error
(1)IPM continuity check
(1)Ensure unobstructed air flow from the outdoor unit air outlet.
(2)Check the outdoor unit fan motor.
(1)Check the IPM is attached correcity to the outdoor unit IPM PWB.
(1)IPM continuity check.
(2)Check the IPM and heat sink for secure installation.
(3)Check the outdoor unit fan motor for proper rotation.
(4)No abnormality found in above inspections (1)through (3).
(5)No abnormality found in above inspections (1)through (4).
(1)Check connector CN8A and CN8C of the outdoor unit thermistor for
secure installation.
(2)Measure resistance of outdoor thermistors TH1 ~ 4, 6 ~ 8.
(3)Check the lead wires of thermistors TH1 ~ 4, 6 ~ 8 on the outdoor unit
control PCB for open-circuit.
(4)No abnormality found in above inspections (1)through (3).
(1)Measure resistance of the heat-sink thermistor (CN8B).
(Temporary stop for cycle protection)
(Temporary stop for cycle protection)
(1)Check the outdoor unit air outlet for blockage.
(2)Check if the power supply voltage is AC 230V at full power.
(3)Check the pipe connections for refrigerant leaks.
(4)Measure resistance of the outdoor unit compressor thermistor.
(TH1:Approx.53k at 25ºC)
(5)Check the expansion valve for proper operation.
(Temporary stop for cycle protection)
(3)Replace the outdoor unit control PCB assembly.
(2)Replace the outdoor unit thermistor assembly.
(1)Replace the outdoor unit thermistor assembly.
_
Remedy
(1)Ensure unobstructed air flow from the outdoor unit air outlet.
(2)Check the outdoor unit fan motor.
AC maximum current error
AC current error when OFF
AC overcurrent error
IPM pin level error
DC overcurrent error
Thermal fuse error in terminal board
Thermal fuse
in terminal board (for power supply)
Abnormal wire
check
Outdoor unit
AC Current
8 -0
-2
-3
-1
7 -0
-1
Outdoor unit
DC Current
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
6 -0
Discharge thermistor open circuit error
-2
Operation lamp(RED)
Cluster lamp(BLUE)
Heat exchanger thermistor open
Outdoor unit
circuit error
thermistor opencircuit
Outdoor temperature thermistor open
circuit error
Suction thermistor open circuit error
-1
IPM high temperature error
Temperature stop due to IPM over heat.
Temporary stop due to out door unit
heat exchanger overheat.
Temporary stop due to indoor unit
heat exchanger overheat.
Temporary stop due to compressor
discharge overheat.
Suction thermistor open circuit error
Compressor high temperature error
Thermistor Unit A - C thermistor
short circuit error
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
_
Inspection location/method
Heat exchanger thermistor short circuit (1)Measure resistance of the outdoor unit thermistors.
(TH2 ~ 4, 6 ~ 8: Approx.4.4k at 25ºC
error
(2)Check the lead wire of the outdoor unit thermistor for torn sheath and
Outdoor temperature thermistor
shortcircuit.
short circuit error
(3)No abnormality found in above inspections (1)and (2).
Suction thermistor short circuit error
Normal
Sub category
Operation lamp(RED)
Cluster lamp(BLUE)
Cycle
temperature
Outdoor unit
thermistor
short-circuit
Main category
Content of diagnosis
-5
5 -0
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
2 -0
-1
-2
-3
0 -0
1 -0
Main Sub
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
X
Lighting pattern at the time of timer lamp lighting
Wall
(Panel)
: Flashes 3 times in 0.2-sec intervals
Indication on indoor unit
Flashes in 1-sec intervals (normal) : 1sec ON / 1sec OFF X : : OFF
3–4
X
X
X
Indoor/outdoor units in
complete shutdown
Indoor/outdoor units in
operation
Indoor/outdoor units in
operation
Indoor unit in operation
Outdoor unit in
complete shutdown
X
14 time
Indoor/outdoor units in
complete shutdown
Indoor unit in operation
Outdoor unit in
complete shutdown
13 time
Indication by
LED1 on
outdoor unit
*2
Indoor/outdoor units in
complete shutdown
Status of
indoor/outdoor
units
Floor / ceiling
Sub category
Operation lamp(RED)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
30 -0
20 -0
19 -0
-1
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
18 -0
Operation lamp(RED)
Cluster lamp(BLUE)
Cluster lamp(BLUE)
17 -0
EEPROM data error
Indoor unit
control PCB
Drain pump unit Drain pump unit error
Indoor unit fan error
Serial erroneous wiring
Serial short-circuit
Erroneous wiring
Serial open-circuit
Indoor unit fan
Wires between
units
Wires between
units
low valtage error
-2
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Clock error
Active Filter overvoltage error
-1
Active Filter
Outdoor unit
Detection error of inverter current.
Compressor rotation error
(at 180º energizing)
Compressor rotation error.
(at 120º energizing)
DC compressor Compressor startup error
Main category
Content of diagnosis
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
14 -0
-1
-2
-3
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
13 -0
for 5 seconds
Main Sub
Operation lamp(RED)
Cluster lamp(BLUE)
X
Lighting pattern at the time of timer lamp lighting
Wall
(Panel)
: Flashes 3 times in 0.2-sec intervals
Indication on indoor unit
Flashes in 1-sec intervals (normal) : 1sec ON / 1sec OFF X : : OFF
(1)Check connector CN2 and CN10.
(EEPROM read data error)
(1)Check the indoor fan motor for proper rotating operation. (Check fan lock.)
(2)Check the lead wire of the indoor fan motor for open-circuit.
(3)Check connector of the indoor unit fan motor for secure installation.
(4)No abnormality found in above inspections (1)through (3).
(1)Check the wires between units.
(1)Check the wires between units.
(1)Correct the wiring.
(2)Replace the fuse/outdoor unit control PCB assembly.
(3)Replace the outdoor unit control PCB assembly.
(1)Check the wires between units.
(2)Check the outdoor unit fuse.
(3)Check 15-V,13-V and 5-V voltages on the PCB.
Check resistance between IPM terminals.
(4)Check pins No.5 and 8 of connector CN3 of the outdoor unit fan motor
for short-circuit.
(5)Outdoor unit control PCB.
(1)Replace the Drain pump unit unit.
(2)Re-insertion of CN2 and CN10.
(1)Replace the indoor unit control PCB.
(1)Replace the indoor fan motor.
(2)Replace the indoor fan motor.
(3)Correct the installation of CN3 of the indoor fan motor.
(4)Replace the indoor unit control PCB.
(1)Correct the wiring.
(1)Correct the wiring.
(5)Replace the outdoor unit control PCB board.
(4)Replace the outdoor unit fan motor.
(1)Connect stable power supply.
(2)Replace the outdoor unit control PCB assembly.
(2)Replace tfe outdoor unit control PCB assembly.
(1)Conect stable power supply.
(1)Check the wires between units.
(2)Check voltage between N and 1 the indoor/outdoor unit terminal boards.
(1)Check the AC power supply valtage for fluntuation.
(1)Replace the outdoor unit control PCB assembly.
(1)Connect stable power supply.
(2)Replace the outdoor unit control PCB assembly.
(1)Check the clock for proper inputt.
(1)Replace the outdoor unit control PCB assembly.
(1)Check the AC power supply voltage for fluctuation.
(2)No abnormality found in above inspection (1).
(3)Replace the Active Filter.
(4)Replace the outdoor unit control PWB assembly.
(5)Replace the compressor.
(2)Replace the outdoor unit control PWB assembly.
(3)Replace the outdoor unit control PWB assembly.
(1)Correct the installation. (U:Red,V:White,W:Orange)
Remedy
(1)Check the circuit of detection of inverter current.
(1)Check the colors (red,white,orange)of the compressor cords for proper
connection. (PWB side, compressor side)
(2)Check if the IPM terminal resistance values are uniform.
(3)Check if outdoor main relay (MRY1) turns on and voltage of both end of
the condenser (C10) has become DC380V.
(4)No abnormality found in above inspections(1)and(3).
(5)No abnormality found in above inspections(1)and(4).
Inspection location/method
CHECK METHOD
CAUTION: CHECKING PRINTED CIRCUIT BOARDS (PWB)
Non-insulated control circuit
Do not touch the
cabinet or bring metal
parts into contact with
the cabinet.
The GND terminals of the low-voltage circuits (control circuits for
microcomputer and thermistors and drive circuits for expansion valve
and relays) on the control printed circuit board (PWB) are connected
to the compressor drive power supply (370-VDC negative terminal).
Therefore, exercise most caution to prevent electric shock.
Danger!!
Do not connect
the grounding
wire.
If a measuring instrument used for the test is grounded, its chassis
(ground) has the same electric potential as the 0-V probe. Since noninsulated circuits have the following voltage potential difference from
the ground, connection of the grounding wire results in a short-circuit
between the 0-V line and the ground, thus allowing an excessive current to flow to the tester to cause damage.
If the sheaths of the thermistor lead wires or expansion valve lead
wires inside the outdoor unit become damaged due to pinching by the
front panel or other metal parts or contacting a pipe, a high voltage can
flow and destroy the circuits. To prevent these problems, carefully conduct assembly work.
Reason
The oscilloscope (chassis ground) has the same electric potential as the 0-V probe. The entire electronic control section of the outdoor
unit has a voltage potential difference from the ground. When the oscilloscope is setup, the 0-V line and the ground voltage (ground) will
be short circuited, resulting in an excessive current flow to cause damage to the oscilloscope or indoor electric circuits.
CAUTION: when attaching or removing the board
When operating only the outdoor unit (cooling 48.3 Hz fixed mode) to make the outdoor unit run in cooling mode, apply a voltage of 220 ~
240V AC to L and N on the terminal board and push the pump down switch (SW1). (Avoid operating the outdoor unit alone for long periods
of time.)
(D)
0
(D)
Figure 2 Temperature properties of outdoor thermistors
TH2 : Heat exchanger pipe thermistor (CN8A 3 - 4 )
TH3 : Outdoor temp. thermistor (CN8A 5 - 6 )
TH4 : Suction thermistor (CN8A 7 - 8 )
TH6 : Thermistor unit A (CN8C 1 - 2 )
TH7 : Thermistor unit B (CN8C 3 - 4 )
1
1
8
Connector
CN8A
6
Connector
CN8C
500k
)
400k
Resistance (
Resistance (
)
TH1 compressor thermistor
(CN8A 1 - 2 )
25ºC resistance
45 k
300k
200k
5.78k
3.06k
4.17k 2.28k
1.72k
100k
0
-20
0
20
60
40k
0ºC resistance
14.5 k
25ºC resistance
4.431 k
TH2 - TH4
TH6 - TH8
30k
20k
10k
0
80 100 120
Temperature (ºC)
-20
0
20
40
Temperature (ºC)
3–5
60
To measure the resistance, first remove the connector from the board.
Thermistor
Compressor thermistor
Heat exchanger pipe thermistor
Outdoor temp. thermistor
Suction thermistor
Thermistor unit A (suction)
Thermistor unit B (suction)
No.
TH1
TH2
TH3
TH4
TH6
TH7
Connector
CN8A
CN8A
CN8A
CN8A
CN8C
CN8C
Color
Red
Orange
Green
Black
Blue
White
Connector pin
No. 1 to 2
No. 3 to 4
No. 5 to 6
No. 7 to 8
No. 1 to 2
No. 3 to 4
Figure 3 Temperature properties of heatsink thermistor
500
Thermistor
Heatsink
Resistance (k )
400
Signal
Color
CN8B
Black
To measure the resistance, first remove
the connector as shown at right.
300
1
3
Heatsink thermistor
TH5 (black)
25ºC resistance 50k
200
6.14k
100
3.25k
12.3k
0
-20
0
20
40
60
Temperature (ºC)
80
Tester
100
2. How to distinguish the defective parts
1. When all rooms are not cooled
Are the timer lamps of the indoor units in all rooms flashing ?
Yes
No
Press the OPERATION button
to start operating the air-conditioner. (One-room operation ON)
(Set the cooling mode to 18ºC)
Yes
Is the compressor of the outdoor
unit operating ?
No
The cooling cycle is abnormal.
Are the timer lamps of the indoor
units in all rooms flashing ?
Yes
Check the failure symptom with
the failure diagnosis mode.
No
Check the pressure.
Check that the power between
the terminal board " N " and " 1 "
of the indoor unit is AC 230V,
50Hz.
Repair the wiring between the
units.
3–6
TO
A
(Check the failure with
the outdoor unit.)
3–7
Replace the
thermistor.
No
Is the resistance
value of the thermistor for the compressor (TH1), heat Yes
ex-changer (TH2)
or outdoor temperature (TH3) or suction (TH4, TH6-7)
correct?
Open circuit of the
outdoor thermistor
A
No
Check the voltage
(15V).
No
AC overcurrent
No
Yes
Replace the fan motor.
Yes
Connect CN3
Inspect the compressor, heat exchanger
and piping.
The cycle is abnormal.
Yes
Is the resistance value
between 5 and 8
of fan motor 0?
Check the FUSE 5
Yes
Is CN3 connected ?
No
Is the outdoor fan
motor operating ?
Overheat of the compressor
Replace the Compressor.
The compressor is abnormal.
Replace the IPM PWB
Yes
Power module PWB
(IPM) abnormality
Replace the IPM PWB.
Yes
No
Connect CN6.
Check the voltage (5V).
Replace the current
transformer
Yes
Is CN6 connected ?
Yes
Are 2 LEDs
switched off ?
Open circuit of serial signal line
Short circuit of serial signal line
Is the resistance value of the No
winding in the current transformer (CT1) ? (720)
Fix the IPM PWB with
screws securely.
Yes
Replace the outdoor control PWB.
No
Abnormal AC current
Is the winding of the current
transformer (CT1) broken ?
Is each of the resistance values among
the terminals of the
Yes
IPM PWB 0 ?
P - U, N - U
P - V, N - V
P - W, N - W
No
Is the IPM PWB in a
state of floating from
the heat sink ?
Connect CN16
No
Is each of the resistance
values among the terminals of the IPM PWB 0 ?
P - U, N - U
No
P - V, N - V
P - W, N - W
Check the voltage
(15V).
Yes
No
Is CN16 connected ?
Rotation error of
the compressor
Fix the Power factor
module with screws
secuerly
Yes
No
Replace the Power
factor module (AF1)
Is the resistance value among Yes
the terminal of the Power factor module (AF1) 0 ?
No
Is the Power factor module in a
state of flaoting from the heatsink?
Power factor module (AF1) error
2. When one room is not cooled (other rooms are cooled)
Is the timer lamp of the
indoor unit in the room
not cooled flashing ?
Yes
No
Press the OPERATION
button to start operating
the air-conditioner.
(Set the cooling mode
to 18ºC.)
Yes
Is the timer lamp of the
indoor unit in the room
not cooled flashing ?
Check the failure
symptom with the failure
diagnosis mode.
No
No
Check that the power
between the terminal
board "N" and "1" of the
indoor unit is AC 230V.
Short circuit of the thermistor error
Open circuit of the thermistor error
Is the resistance value of the thermistor for UNIT A (TH6) or UNIT B Yes
(TH7)
Yes
Abnormal fan motor of
indoor unit
Open circuit of serial signal line
Short circuit of serial signal line
Is the resistance value of the No
winding in the fan motor ?
Yes
Is the wiring between the
units connected by mistake
or broken ?
Yes
Replace the indoor
control PWB.
No
Repair the wiring
between the units.
No
Repair the wiring between
the units.
Replace the indoor fan motor.
Replace the thermistor.
Replace the outdoor control PWB
or the expansion valve (UNIT A)
or the expansion valve (UNIT B)
Replace the indoor control PWB.
3. When all rooms are not heated
Does the air get cooler in the cooling operation mode?
Yes
No
Press the ON switch on the remote control to run the air conditioner.
Set the temperature to 32ºC in the heating mode and start operation.
Refer to 1 All rooms are not cooled.
No
Is the outdoor compressor running?
Yes
No
Yes
Check the four-way valve. Has the cycle been switched?
To A
No
The heating cycle is normal.
Is AC230V applied between the connector
(CN4) 1 and 3 of the 4-way valve ?
Pressure check
No
Yes
Replace the 4-way valve.
Replace the outdoor control P.W.B..
3–8
AEX2M14LR
CHAPTER 4. REFRIGERATION CYCLE
AEX2M14LR
Service Manual
[1] REFRIGERATION SYCLE
STOP valve (Liquid)
UNIT A
(3)
Expansion valve B
Heat exchanger
(4)
Expansion valve A
Heat exchanger
Heat exchanger
(3)
(2)
4-way valve
UNIT B
Accumulator Compressor
(1)
STOP valve (Gas)
OUTDOOR UNIT
INDOOR UNIT
Refrigeration Cycle
UNIT B
UNIT A
INDOOR UNIT
OUTDOOR UNIT
Cooling
heating
Flow of Refrigerant
1. Cycle temperature and pressure in stop valve
Running unit
AY-XPM7FR &
AY-XPM7FR &
(2 units)
AY-XPM12FR
(1 unit)
No
(1)
(2)
(3)
(4)
Stop valve pressure (gas side) (MPa gauge)
Frequency (Hz)
(1)
(2)
(3)
(4)
Stop valve pressure (gas side) (MPa gauge)
Frequency (Hz)
Cool (MAX)
72
40
13
17
1.00
60
80
38
10
12
0.78
65
4–1
Operation Mode
Cool (Test run)
Heat (MAX)
63
69
38
1
15
28
21
4
1.13
2.35
35
70
67
77
37
2
13
39
18
3
1.01
3.20
35
70
Heat (Test run)
43
3
24
4
1.72
30
54
3
28
5
2.25
35
AEX2M14LR
Running unit
No
(1)
(2)
(3)
(4)
Stop valve pressure (gas side) (MPa gauge)
Frequency (Hz)
(1)
(2)
(3)
(4)
Stop valve pressure (gas side) (MPa gauge)
Frequency (Hz)
AY-XPM9FR
(1 unit)
AY-XPM7FR
(1 unit)
Operation Mode
Cool (Test run)
Heat (MAX)
63
77
37
2
14
38
20
4
1.07
3.12
30
60
62
69
36
3
14
34
20
5
1.07
2.83
20
50
Cool (MAX)
73
37
10
14
0.87
50
68
37
11
16
0.93
40
Heat (Test run)
48
4
28
5
1.98
25
41
4
28
6
1.79
20
Standard conditions
Indoor side
Dry-bulb temp. (C)
Relative humidity (%)
27
47
20
–
Cooling
Heating
Outdoor side
Dry-bulb temp. (C)
Relative humidly (%)
35
40
7
87
2. PERFORMANCE CURVES
NOTE: Total cooling capacity and total input with 2 units running.
(Running frequency: 60HZ)
1100
Input(W)
(Running frequency: 50HZ)
˴
900
˴00
19
17
16
36
34
32
30
Heatingcapacity(kW)
20
4.5
4.0
3.5
3.0
24
Outlet air temp. (ºC)
700
˴00
18
Coolingcapacity(kW)
1000
800
˴00
Outlet air temp. (ºC)
Input(W)
1000
6.0
28
5.0
26
4.0
3.0
-6
-4
-2
0
2
4
6
8
10
12
Outside air temp. (ºC)
26
28
30
32
34
36
38
40
42
44
At Heating for AY-XPM9FR (for AE-X2M14LR)
Outside air temp. (ºC)
At Cooling for AY-XPM9FR (for AE-X2M14LR)
[2] REFRIGERANT PIPE INSTALLATION WORKS
1. Piping
Max. piping length A ------------------ 25m
2. Air-removing
Use an adapter for preventing vacuum pump oil from flowing back to
the gauge manifold hose. ON/OFF operation of the vacuum pump
should be made by the adapter switch.
INDOOR UNIT
Min. piping length A ------------------ 3m
Max. level difference B -------------- 10m
•
If total piping length exceeds 25m,
add 15g of refrigerant per 1m.
•
When the outdoor unit is placed at a
higher level than the indoor units, provide a trap near the hose’s lead-in
port.
1) Remove both valve shaft caps of the stop valves.
A
Max. total piping length of all unit --- 40m
B
2) Remove the service port cap of the stop valve (gas side).
OUTDOOR
UNIT
3) Connect the gauge manifold hose to the service port and the vacuum pump. Be sure that the hose end to be connected to the service port has a valve core pusher.
4) Open the gauge manifold valve and operate the vacuum pump for
10-15 minutes. Make sure the compound gauge reads -0.1MPa (76cmHg).
B
5) Close the gauge manifold valve.
6) Turn off the vacuum pump.
TRAP
7) Fully open the stop valve (liquid side) with hexagon socket screw
key. Turn all the way up to contact.
4–2
AEX2M14LR
CAUTION: Execute the pump down operation using with PUMP
DOWN SWITCH. The compressor might stop on the way if
pump down is operated while cooling operation mode without PUMP DOWN SWITCH.
8) Fully open the stop valve (gas side) with hexagon socket screw
key. Turn all the way up to contact.
9) Disconnect the gauge manifold hose from the service port.
10)Replace the service port cap and both valve shaft caps tightly. Turn
until the torque suddenly increases. Now tighten a 1/6-turn more.
NOTE: *
*
4. MISWIRING CHECK
Use a gauge manifold and hoses exclusive for R410A.
Miswiring check must be performed after installation, reinstallation and
service. This multi-type air conditioner is designed with a WIRE
CHECK SWITCH on the outdoor unit, and miswiring of unit-to-unit wiring will be self-corrected by microcomputer. Miswiring check may not
be performed when the outdoor temperature is below 5C.
After air removal, check the tube connections for gas leak
using a leakage detector or soapy water. Regarding leakage detector, use high-sensitivity type designed specially
for R410A.
1) Complete the unit-to-unit wiring/piping and perform the air removing of the pipes. Turn the electrical circuit breaker ON. Before turning the circuit breaker ON, make sure no one is working on the
indoor units installation. Electrical shock or injury may occur.
Gauge manifold
Compound
gauge
Lo
Hi
2) Check that all LED (LED1, 2) on the display board unit are flashing
synchronously in a slow (one flash per second) cycle. If either one
or more of all LED is/are kept lighted on, check and correct the
Hose
Stop valve
(gas side)
Service port
Stop valve
(liquid side)
wrong wirings among,
N, 1, 2, terminals so that all LED will flash
slowly, showing normal condition.
Vacuume pump adapter
Service port
3) Press the WIRE CHECK SWITCH (SW2) on the display board unit
for 5 seconds or more. The flashing of all LED will change. Mis-wiring (mis-piping) check will start and the indoor and outdoor units
will start operating. (The red operation lamp on the indoor unit will
flash, and three BEEP will be emitted.) Miswiring of unit-to-unit wiring will be self-corrected.
Hexagon socket screw key
4mm
Valve shaft cap
OPEN
4) Wrong piping works cannot be corrected, and will be detected as
an error. When an error is detected during checking, all LED will
show triple flash for eight times. The indoor and outdoor operation
will stop. Turn the circuit breaker OFF and check and correct the
miswiring (mispiping)*. After correction, return to step 1 and repeat
the miswiring (mispiping) check again. If error is still detected, or
other types of LED signal should be indicated, please contact a service technician. (Refer to wiring diagram attached inside the outdoor unit cabinet for self diagnosis signal.)
3. Pump down
(Pump down is adopted in the case of unit removal for reinstallation,
abandonment, repair etc.) Pump down is to collect the refrigerant into
the outdoor unit by control of the stop valves and the compressor.
1) Turn the circuit breaker on.
2) Check that all LED (LED1, 2) on the display board unit are flashing
synchronously in a slow (one flash per second) cycle.
5) All LED (LED1, 2) will flash synchronously in a slow (one flash per
second) cycle when miswiring (mispiping) check is completed with
no error detection (3–6 minutes), and the operation of indoor and
outdoor units will stop. (The red operation lamp flashing on the
indoor unit will go off.)
3) Stop the air conditioner operation.
4) Remove both valve shaft caps of the stop valves.
5) Press the PUMP DOWN SWITCH (SW1) on the display board unit
for 5 seconds or more. The indoor/outdoor unit will start operation
in the pump down mode. (the OPERATION lamp on the indoor unit
will flash and three BEEP will be emitted.)
6) Place the control box cover back in the reverse order.
*Correction points on error detection
6) After 5 – 10 minutes, fully close the stop valve (liquid side) by turning the hexagon socket screw key clockwise.
a) Are all piping the total multi air conditioner system connected?
b) Are the stop valves open?
SW 1
PUMP DOWN
SW 2
WIRE CHECK
UNIT B
LED 2
UNIT A
LED 1
LED 2
UNIT B
NOTE: Wait more than 90 seconds after finishing pump down, and
turn off the circuit breaker off.
Stop valve
(gas side)
Stop valve
(liquid side)
4–3
SW 1
SW 2
9) Replace the service port cap and both valve shaft caps tightly.
WIRE CHECK
LED 1
UNIT A
8) Press the PUMP DOWN SWITCH (SW1) on the display board unit
for 5 seconds or more. The operation of indoor/outdoor unit will
stop.
PUMP DOWN
7) After 2 – 3 minutes, immediately close the stop valve (gas side)
fully.
AEX2M14LR
Service
CHAPTER 5. DISASSEMBLING PROCEDURE
AEX2M14LR
Manual
If, in carrying out repairs and modifications, the work requires the use of arc- and flame-producing apparatus, such as welding, brazing and soldering
equipment, this work shall only be started after the rooms have been thoroughly ventilated. While the work is being carried out, the mechanical ventilation, if any, shall be kept in constant operation and all windows and doors kept open. In the case of repairs to parts of the refrigerant circuit, it may
be necessary that not only the workman but also a second person shall be present for observation and assistance.
Necessary protective equipment shall be available and, in the case of open flames or arcs, fire extinguishing apparatus shall be ready to hand.
Welding and brazing shall be carried out by qualified workmen.
[1] OUTDOOR UNIT
CAUTION: DISCONNECT THE UNIT FROM POWER SUPPLY BEFORE ANY SERVICING.
1. PROCEDURE
4. Remove the 4 screws fixing the fan guard then remove it and
remove the 7 screws fixing the cabinet then remove it.
1. Remove the 2 screws fixing the pipe cover then remove it.
3 screws are at the left.
2 screws are at the right.
1 screw is at the front.
1 screw is at the rear.
2. Remove the 3 screws fixing the control box cover then remove it.
5. Remove the 3 screws fixing the control box angle then remove it.
CAUTION: DISCHARGE ELECTROLYTIC CAPACITOR BEFORE
TOUCHING THIS CAPACITOR OR OTHER COMPONENTS OR WIRINGS.
3. Remove the 6 screws fixing the side cover R then remove it.
6. Cut the 2 wire fixing bands.
5–1
AEX2M14LR
7. Disconnect the 9 connectors.
10.Unfasten the nut fixing the propeller fan then remove it.
Expansion valve (CN12A, CN12B): 2pcs.
Remove the 5 screws fixing the control box then remove it.
Thermistor (CN8A, CN8B): 2pcs.
1 screw is at the right.
Fan motor (CN3): 1pc.
4 screws are at the front.
Reverse valve coil (CN4): 1pc
NOTE: How to disassemble of control box assembly is shown in step
15 - 25.
Display board unit (CN11): 1pc
NOTE: Caution to connectors position especially the expansion
valves, when reinstalling
11. Remove the 2 screws fixing the fan motor angle assembly then
remove it with lifting up as unhook the hook on the base pan.
8. Remove the compressor cover B.
Disconnect 5 terminals.
Remove the 3 screws fixing the fan bulkhead assembly then
remove.
Coil for PFC1 (L1): 2pcs (White)
Compressor: 3pcs (Red, White and Orange)
NOTE: Caution to connectors position especially the compressor,
when reinstalling.
12.Remove the 4 screws fixing the fan motor then remove it.
9. Remove the 13 screws fixing the rear cabinet then remove it.
1 screw is at the left.
5 screws are at the right.
7 screws are at the rear.
5–2
AEX2M14LR
13.Remove the 3 screws fixing the coil for PFC then remove it
How to disassemble the control box assembly
NOTE: When the coil re-install, silicone grease must be paste to the
back face of the coil.
16.Cut the 3 wire fixing bands.
Disconnect the 7 connectors. [CN6, CN15, CN9A, CN16, CN17,
CN5, CN101 (IPM)]
14.Remove the 3 strings on the compressor cover A then remove it
Lift up the Control Board Unit (PWB) and remove it.
Control board unit
15.Remove the 6 thermistors on copper tube.
Install this SHAORT-CIRCUIT CONNECTOR in a new
CONTROL PWB at CONTROL PWB exchange.
NOTE: Caution to position when re-installing.
17.Disconnect the 2 terminals (Blue and Brown).
And Remove the 3 screws fixing the terminal board angle assembly
then turn it inside out.
TH8 (BROWN)
(Just on the tilted pipe)
TH7 (WHITE)
(Just on the horizontal pipe)
TH6 (BLUE)
Blue
(Just on the horizontal pipe)
TH3 (GREEN)
TH4 (BLACK)
TH2 (ORANGE)
Refer to page 5-5 (Mounting position of thermistors and expansion
valves)
5–3
Brown
AEX2M14LR
21.Remove the 2 screws fixing the heat sink cover then remove it.
18.Disconnect the 5 terminals (T1, 2, 4, 6, MRY1) and 3 connectors
(CN14, CN2, CN13 (Active Filter)).
22.Cut a wire fixing board.
19.Remove the 3 screws fixing the power supply board unit (PWB).
23.Remove the each of 4 screws fixing the heat sink.
NOTE: Confirm two kinds of spacer put in 4 holes have clung.
Seal the 4 burring holes with silicone sealer before reinstalling.
20.Disconnect 2 connectors (CN1,CN9). Then lift up the relay board
unit (PWB) and remove it.
5–4
AEX2M14LR
24.Disconnect the 5 terminals (TP, TU, TV. TW, TN) and 1 connector
(CN114) on the IPM PWB. And Remove the 2 screws fixing the
IPM PWB and remove it.
25.Disconnect the 6 terminals (P, Io, +, -, L1, L2) and 1 connector
(CN13) on the active filter. And Remove the 2 screws fixing the
power module and remove it.
NOTE: When the IPM PWB re-install, silicone grease must be paste
to the back face of the IPM.
NOTE: When the active filter re-install, silicone grease must be paste
to the back face of the Active Filter.
Active filter
or
Power transistor
module(IPM)
OK
NG
CAUTION: Fix the connector of the power module securely.
2. Mounting position of thermistors and expansion valves
Mounting position of thermistors and expansion valves are shown below.
Thermistor
•
Check the cord color of thermistor before mounting.
•
Thermistor Suction, Suction A, Suction B, Suction C are mounted on GAS side pipes.
•
Thermistor Heat exchanger is mounted on LIQUID side pipe.
Expansion valve
•
Check the labels before connecting to the Control Board Unit.
Thermistor Suction (Black)
Label
Expansion valve B
Thermistor Suction B (White)
Label
Expansion valve A
Thermistor Suction A (Blue)
Suction A
Suction B
Suction C
Suction
Outdoor temp.
Heat
exchanger
Compressor
Thermistor Heat exchanger (Orange)
Thermistor
B
Connector label
CAUTION: Mismounting and misconnecting will cause error or failure.
5–5
A
Expansion valve
AEX2M14LR
MEMO
5–6
AEX2M14LR
PartsGuide
PARTS GUIDE
MULITI SPLIT TYPE
ROOM AIR CONDITIONERS
(OUTDOOR UNIT)
MODEL
AE-X2M14LR
In the interests of user-safety (Required by safety regulations in some
countries) the set should be restored to its original condition and only
parts identical to those specified should be used.
CONTENTS
[1]
OUTDOOR UNIT
[4]
PACKING PARTS
[2]
CONTROL BOARD UNIT PARTS

INDEX
[3]
IPM30A BOARD PARTS
Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and performance of the set.
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
AEX2M14LR
[1] OUTDOOR UNIT
2-21
2-20
6-6
4-5
4-2
1-36
4-4
4-6
4-3
2-14
2-2
1-30
6-11
2-23
2-99
6-6
4-1
2-2
2-13
2-46
6-5
2-12
2-93
6-5
6-5
1-10
1-49
2-67
1-12
3-15
1-2
6-14
6-5
1-47
1-48
6-5
2-28
1-41
3-8
6-1
2-80
1-15
1-50
1-34
6-7
1-5
1-25
1-4
3-7
1-77
6-4
1-46
6-13
6-5
3-16
6-13
6-13
1-71
1-6
6-5
1-52-2
1-65
1-52-1
1-54
3-11
1-16 1-21
2-66
1-22
3-20 1-27
3-18
1-16
3-5
6-3
1-24
1-23
1-19
1-20
1-13
3-4
1-68
3-3
3-9
1-57
1-58
3-6
6-13
1-52
1-83 1-26
6-3
1-1
1-53
6-5
2-67
3-193-1
1-63
1-61
2-27
1-14
1-55
6-13
1-64
2-26
6-10
1-78
1-66
6-13
1-35
2-19 2-6
1-69
1-40
3-14
3-17
6-8
1-32
6-5
1-37
6-5
1-8
1-42
6-4
1-73
1-31
6-13
2-63 2-4
2-5
1-39
6-4
1-11
6-9
1-62
1-76
1-3
1-45
1-9
1-9-1
6-4
1-38
1-67
2-10 2-84
2-83
2-18
2-62
1-34
2-98
2-8
6-13
1-17
6-2
6-13
1-44
1-43
2-1
6-11
2-2
2-22
6-5
2-2
2-85
2-65
2-9
2-7
2-3
2-16
2-15
2-9
6-12
1-18
1-51
2-17
2-11
6-13
3-12
3-13
3-10
3-9
3-10
3-2
1-60
6-5
1-56
1-59
1-28
6-13
6-13
1-7
2
3-21
AEX2M14LR
NO.
PARTS CODE
PRICE NEW PART
RANK MARK RANK
DESCRIPTION
[1] OUTDOOR UNIT
1-1
1-2
1-3
1-4
1-5
1-6
1-7
1-8
1-9
1-9-1
1-10
1-11
1-12
1-13
1-14
1-15
1-16
1-17
1-18
1-19
1-20
1-21
1-22
1-23
1-24
1-25
1-26
1-27
1-28
1-30
1-31
1-32
1-34
1-35
1-36
1-37
1-38
1-39
1-40
1-41
1-42
1-43
1-44
1-45
1-46
1-47
1-48
1-49
1-50
1-51
1-52
1-52-1
1-52-2
1-53
1-54
1-55
1-56
1-57
1-58
1-59
1-60
1-61
1-62
1-63
1-64
1-65
1-66
1-67
1-68
1-69
1-71
1-73
1-76
1-77
1-78
1-83
CCHS-A789JBTB
CMOTLB426JBEZ
DCAB-A161JBTA
FCOV-A330JBWZ
GCAB-A366JBTA
GFTA-A455JBTB
GGADFA042JBFA
GPLTMA059JBTB
LANGKA236JBPZ
LANGKA253JBPZ
LHLD-A574JBFA
LSUB-A024JBPZ
MSPR-A026JBE0
MSPR-A027JBE0
MSPR-A036JBE0
MSPR-A046JBE0
MSPR-A129JBE0
NFANPA142JBFA
PCOV-A578JBEZ
PCOV-A589JBEZ
PDAI-A241JBTA
PGUM-A115JBEZ
PGUM-A119JBEZ
PGUM-A120JBEZ
PGUM-A121JBEZ
PRDAFA163JBEZ
PGUMS0170JBE0
PGUMSA319JBEZ
PSEL-D235JBEZ
PSEL-B954JBEZ
PSEL-B956JBEZ
PSEL-B966JBEZ
PSEL-C011JBEZ
PSEL-C017JBEZ
PSEL-C019JBEZ
PSEL-C260JBEZ
PSEL-C261JBEZ
PSEL-C262JBEZ
PSEL-C277JBEZ
PSEL-C282JBEZ
PSEL-C343JBEZ
PSEL-C353JBEZ
PSEL-C354JBEZ
PSEL-C369JBEZ
PSEL-C370JBEZ
PSEL-C371JBEZ
PSEL-C372JBEZ
PSEL-C373JBEZ
PSKR-A353JBWZ
PSPA-A146JBE0
PSPF-B112JBEZ
PSPF-B113JBEZ
PSPF-B114JBEZ
PSPF-B072JBEZ
PTUB-A196JBEZ
RTRN-A294JBZZ
PCOV-B484JBFA
TLAB-B709JBRA
PFPFPD477JBEZ
PSEL-D236JBEZ
TLAB-C250JBRA
TLAB-E544JBRZ
TLAB-C773JBRZ
TLABMA819JBRA
TLABCC545JBRZ
TSPC-G699JBRZ
PSEL-C378JBEZ
PSEL-C379JBEZ
LSUB-A038JBWZ
PSEL-C382JBEZ
CFTA-A339JBKZ
PSEL-C938JBEZ
TLAB-C511JBRA
TLAB-E787JBEZ
PSPF-B073JBEZ
PSEL-D274JBEZ
BD
CA
BN
AZ
BR
AP
BH
AF
AY
AM
AE
AP
AB
AB
AB
AC
AD
BE
AE
AF
BC
AM
AG
AG
AE
AP
AE
AF
AG
AF
AF
AC
AC
AC
AD
AC
AC
AC
AG
AD
AE
AP
AE
AC
AC
AC
AC
AC
AZ
AC
AY
AY
AQ
AK
AK
BG
AG
AH
AG
AG
AG
AM
AN
2-1
2-2
2-3
2-4
2-5
2-6
2-7
DBOX-A079JBYZ
DSGY-E095JBKZ
LANG-A451JBWZ
LANG-A458JBWZ
LBNDKA154JBWZ
LHLD-0261JBM0
LPLTPA016JBFZ
AS
CB
AE
AR
AN
AB
AG
CABINET AND UNIT PARTS
Base pan assembly
Fan motor
Rear cabinet assembly
Coil cover assembly
Cabinet
Control box cover
Fan guard
Side cover R
Motor angle
Fan Motor angle sub
Thermistor holder
Motor angle sub
Spring
Thermistor spring
Thermistor spring
Protector spring
Cycle spring
Propeller fan
Sw board cover
Cover
Flare coupling base
Damper rubber
Valve rubber
Valve rubber
Damper rubber
Heat sink
Damper rubber
Damper rubber
INSULATOR
Bulkhead insulator
Bulkhead seal
Bulkhead seal
Insulator
Cabinet seal
Insulator
Seal A
Seal B
Seal C
Cover insulator
Cushion
Bulkhead insulator A
Insulator
Insulator
Accum.cushion
Insulator
Seal
Seal
Seal
Bulkhead
Spacer
Compressor cover A2
N
AH
AK
AB
AB
AN
AC
AY
AK
AC
AK
AK
AG
N
N
Compressor cover B2
Pipe insulator
Active coil (L1)
TUBE COVER
Label
INSULATOR
INSULATOR
Unit label
Service label
Label
INVERTER LABEL
Wiring diagram
Name label
Insulator
Insulator
Flare cup.sub-S
Seal D
Control cover assembly
Insulator
Label
EU energy label
Compressoor cover C2
Accum cushion
CONTROL BOX PARTS
Cont.box spot assembly
Control board unit
Cont.box angle
Terminal board ang.
Capacitor band
Cord holder
Pwb support A
3
AEX2M14LR
NO.
PARTS CODE
PRICE NEW PART
RANK MARK RANK
DESCRIPTION
[1] OUTDOOR UNIT
2-8
2-9
2-10
2-11
2-12
2-13
2-14
2-15
2-16
2-17
2-18
2-19
2-20
2-21
2-22
2-23
2-26
2-27
2-28
2-46
2-62
2-63
2-65
2-66
2-67
2-80
2-83
2-84
2-85
2-93
2-98
2-99
LPLTPA017JBFZ
LPLTPA018JBFZ
LPLTPA027JBFZ
PCOV-A601JBWZ
PSEL-C376JBEZ
PRDAFA215JBEZ
PRDAFA216JBEZ
PSEL-C037JBEZ
PSEL-C074JBEZ
PSEL-C374JBEZ
PSHE-A195JBEZ
PSHE-A196JBEZ
PSPA-A064JBE0
PSPA-A065JBE0
PSPA-A150JBZZ
DSGY-C347JBKZ
QTANZA021JBZZ
QTANZA044JBZZ
QW-IZA120JBZZ
PSHE-A273JBEZ
RC-AZA046JBE0
RC-EZA250JBZZ
VHDD25VB60+-1
RH-HXA096JBZZ
RH-HXA095JBZZ
RTHM-A022JBE0
TLAB-B777JBRZ
TLAB-D246JBRZ
TLAB-D243JBRZ
RH-TXA008JBZZ
PSEL-C377JBEZ
RHOG-A169JBE0
AG
AG
AN
AQ
AC
BE
BC
AE
AC
AC
AH
AE
AA
AA
AF
BV
AN
AU
AU
AF
BE
BG
AN
AZ
BC
AN
AC
AF
AM
BR
AC
AK
3-1
3-2
3-3
3-4
3-5
3-6
3-7
3-8
3-9
3-10
3-11
3-12
3-13
3-14
3-15
3-16
3-17
3-18
3-19
3-20
3-21
CCIL-A158JBKZ
DVLV-A952JBKZ
DVLV-A953JBKZ
DVLV-A954JBKZ
DVLV-A668JBKZ
DVLV-A669JBKZ
GLEG-A029JBE0
LBSHCA005JBE0
LX-NZA250JBEZ
LX-NZA251JBEZ
PACU-A052JBEZ
PCAP-A083JBEZ
PCAP-A084JBEZ
PCMPRA524JBEZ
PCON-A611JBPZ
PCOV-0562JBE0
PMUF-A091JBEZ
PVLVRA040JBEZ
PVLVXA081JBEZ
RMOTSA038JBZZ
FCMPRA244JBKZ
AX
AU
AU
AU
AZ
AW
AE
AA
AE
AG
BH
AC
AC
CM
CH
AD
AZ
BM
BB
BD
CM
N
4-1
4-2
4-3
4-4
4-5
4-6
LHLD-A459JBEZ
LPFT-A029JBF0
TINS-B240JBRZ
TINS-B241JBRZ
LBND-A046JBE0
TINS-B242JBRZ
AD
AD
AK
AK
AE
AK
N
N
6-1
6-2
6-3
6-4
6-5
6-6
6-7
6-8
6-9
6-10
6-11
6-12
6-13
6-14
LX-BZA434JBEZ
LX-BZA075JBE0
LX-BZA078JBEZ
LX-BZA140JBE0
LX-BZA364JBEZ
LX-HZA007JBEZ
LX-NZA319JBEZ
LX-NZA313JBEZ
XBPS740P14JS0
XCTS740P10000
XBPS740P20J00
XBPS730P10000
LX-BZA140JBE0
XTTWW40P16000
AR
AA
AB
AB
AC
AE
AE
AE
AB
AC
AF
AF
AB
AC
N
N
Pwb support B
Heatsink support
Pwb support C
Heatsink cover
Insulator
Haet sink
Heat sink
Insulator
Insulator
Seal
Angle sheet
Cord holder sheet
Spacer
Spacer
Spacer
IPM30A board assembly
Terminal board 4P
Terminal board 3P
Compressor cord (for compressor)
Protection sheet (for display PWB)
Electrolytic capacitor (C9)
Electrolytic capacitor (C10)
Diode bridge (DB1)
Thermistor (TH6-TH8)
Thermistor (TH1-TH4)
Thermistor (TH1)
Caution label
Label
Label
Active filter
Insulator
Thermistor (HEATSINK)
CYCLE PARTS
Coil
Flare union unit 3S
Flare union unit 3S
Flare union unit 2S
3way valve unit
3way valve unit
Comp. cushion rubber
Terminal bushing
Flare nut
Flare nut
Accumulator
Nut bonnet
Nut bonnet
Compressor
Condenser
Terminal cover
Muffler
Expansion valve
Reverse valve
Coil
Compressor assembly (3-7, 3-8, 3-14, 3-16)
ACCESSORY PARTS
Holder
Drain joint
Installation manual (English, Italian)
Installation manual (French, Spanish)
Wire fixing band
Installation manual (Portuguese)
SCREWS AND NUTS
Special screw
Special screw (for earth)
Special screw
Special screw
Special screw
Special screw
Special nut
Special nut
Machine screw
Tapping screw
Machine screw
Machine screw
Special screw
Special screw
4
AEX2M14LR
NO.
PARTS CODE
PRICE NEW PART
RANK MARK RANK
DESCRIPTION
[2] CONTROL BOARD UNIT PARTS
2-2
2-2-1
2-2-2
2-2-3
2-2-4
D2-4
L5
L6
Q2
CT1
D14
D19-21
D26-37
IC1
IC2
IC4
IC5
IC6
IC7
IC8
IC9
NR1-NR3
PC1
Q11
Q13-15
RY1
SA1
SW1-3
TR1
MRY1
PTC1
L3 L4
D1 D38
PC4.6.8
PC5.7.9
IC3 IC12
DSGY-E095JBKZ
QFS-GA065JBZZ
QFS-GA062JBZZ
QFS-GA063JBZZ
QFS-GA064JBZZ
VHD1SR139-6-1
RFILNA013JBZZ
RFILNA007CBZZ
VS2SA1586G+-1L
RTRN-A305JBZZ
VHDRK36LF011B
VHD1SR139-6-1
VHD1SR35-4A-1
RH-IXB001JBNA
RH-IZA140JBE0
VHISTRL472+-1
VHIKIA339F+-1L
FH-IXA494JBKZ
RIC--A022BDE0
VHIMM1431A+-1+
VHINJM2904M-1R
RH-VXA002JBZZ
VHGPC81716P-1L
VSKRC245M//-3
VS2SA1020Y+-1+
RRLYDA008JBZZ
QSPGCA006JBZZ
QSW-PA016DRE0
RTRNWA034JBZZ
RRLYDA010JBZZ
RH-QXA005JBZZ
RFIL-A116JBZZ
VHD1SS133//-1
VHGPC817XP3-1L
VHGPC853HXP-1R
RIC--A025BDE0
CB
BA
AF
AE
AF
AB
BE
AR
AB
N
N
AD
AB
AC
AE
AL
AD
N
AE
AD
AD
AF
AD
AC
AH
AH
AH
AB
AG
AN
AW
AY
AA
AD
AG
AE
Control board unit
Fuse (FUSE1,101)
Fuse (FUSE3, 4)
Fuse (FUSE5)
Fuse (FUSE6)
Diode
Normal coil (L5)
Common coil (L6)
Transistor (Q2)
Transformer (CT1)
Diode (D14)
Diode
Diode (D26~37)
Micro computer (IC1)
Integrated circuit (IC2)
Integrated circuit (IC4)
Integrated circuit (IC5)
EEPROM-AEX2M4LR (IC6)
Integrated circuit (IC7)
Integrated circuit (IC8)
Integrated circuit (IC9)
Varistor (NR1-NR3)
Photo coupler (PC1)
Transistor (Q11)
Transistor (Q13~15)
Relay (RY1)
Surge absorb (SA1)
Tact switch (SW1,2,3)
Transformer (TR1)
Relay (MRY1)
PTC thermistor (PTC1)
Coil (L3,4)
Diode (D1,38)
Photo coupler (PC4,6,8)
Photo coupler (PC5,7,9)
Integrated circuit (IC3, IC12)
[3] IPM30A BOARD PARTS
2-23
2-23-1
R1
DSGY-C347JBKZ
RH-IXA859JBZZ
RR-WZA028JBE0
RH-TXA008JBZZ
VHDD25VB+-1
IPM30A board assembly
Power module (PS21267-P)
Cement Resistor (R100)
ACTIVE FILTER(SACT32420G)
DIODE BRIDGE(D25VB60)
BV
BQ
AE
BR
[4] PACKING PARTS
5-3
5-1
NO.
PARTS CODE
5-2
PRICE NEW PART
RANK MARK RANK
DESCRIPTION
[4] PACKING PARTS
5-1
5-2
5-3
SPAKCC801JBEZ
CPADBA131JBKZ
CPADBA132JBKZ
BD
AZ
AS
N
Packing case
Bottom pad assembly
Packing pad assembly
5
AEX2M14LR
INDEX
PARTS CODE
[ C ]
CCHS-A789JBTB
CCIL-A158JBKZ
CFTA-A339JBKZ
CMOTLB426JBEZ
CPADBA131JBKZ
CPADBA132JBKZ
[ D ]
DBOX-A079JBYZ
DCAB-A161JBTA
DSGY-C347JBKZ
"
DSGY-E095JBKZ
"
DVLV-A668JBKZ
DVLV-A669JBKZ
DVLV-A952JBKZ
DVLV-A953JBKZ
DVLV-A954JBKZ
[ F ]
FCMPRA244JBKZ
FCOV-A330JBWZ
FH-IXA494JBKZ
[ G ]
GCAB-A366JBTA
GFTA-A455JBTB
GGADFA042JBFA
GLEG-A029JBE0
GPLTMA059JBTB
[ L ]
LANG-A451JBWZ
LANG-A458JBWZ
LANGKA236JBPZ
LANGKA253JBPZ
LBND-A046JBE0
LBNDKA154JBWZ
LBSHCA005JBE0
LHLD-0261JBM0
LHLD-A459JBEZ
LHLD-A574JBFA
LPFT-A029JBF0
LPLTPA016JBFZ
LPLTPA017JBFZ
LPLTPA018JBFZ
LPLTPA027JBFZ
LSUB-A024JBPZ
LSUB-A038JBWZ
LX-BZA075JBE0
LX-BZA078JBEZ
LX-BZA140JBE0
"
LX-BZA364JBEZ
LX-BZA434JBEZ
LX-HZA007JBEZ
LX-NZA250JBEZ
LX-NZA251JBEZ
LX-NZA313JBEZ
LX-NZA319JBEZ
[ M ]
MSPR-A026JBE0
MSPR-A027JBE0
MSPR-A036JBE0
MSPR-A046JBE0
MSPR-A129JBE0
[ N ]
NFANPA142JBFA
[ P ]
PACU-A052JBEZ
PCAP-A083JBEZ
PCAP-A084JBEZ
PCMPRA524JBEZ
PCON-A611JBPZ
PCOV-0562JBE0
PCOV-A578JBEZ
PCOV-A589JBEZ
PCOV-A601JBWZ
PCOV-B484JBFA
PDAI-A241JBTA
PFPFPD477JBEZ
No.
PRICE NEW PART
RANK MARK RANK
1-1-1
1-3-1
1-1-71
1-1-2
4-5-2
4-5-3
BD
AX
AY
CA
AZ
AS
1-2-1
1-1-3
1-2-23
3-2-23
1-2-2
2-2-2
1-3-5
1-3-6
1-3-2
1-3-3
1-3-4
AS
BN
BV
BV
CB
CB
AZ
AW
AU
AU
AU
1-3-21
1-1-4
2-IC6
CM
AZ
1-1-5
1-1-6
1-1-7
1-3-7
1-1-8
BR
AP
BH
AE
AF
1-2-3
1-2-4
1-1-9
1-1-9-1
1-4-5
1-2-5
1-3-8
1-2-6
1-4-1
1-1-10
1-4-2
1-2-7
1-2-8
1-2-9
1-2-10
1-1-11
1-1-68
1-6-2
1-6-3
1-6-4
1-6-13
1-6-5
1-6-1
1-6-6
1-3-9
1-3-10
1-6-8
1-6-7
AE
AR
AY
AM
AE
AN
AA
AB
AD
AE
AD
AG
AG
AG
AN
AP
AN
AA
AB
AB
AB
AC
AR
AE
AE
AG
AE
AE
1-1-12
1-1-13
1-1-14
1-1-15
1-1-16
AB
AB
AB
AC
AD
1-1-17
BE
1-3-11
1-3-12
1-3-13
1-3-14
1-3-15
1-3-16
1-1-18
1-1-19
1-2-11
1-1-56
1-1-20
1-1-58
BH
AC
AC
CM
CH
AD
AE
AF
AQ
AG
BC
AG
PARTS CODE
PGUM-A115JBEZ
PGUM-A119JBEZ
PGUM-A120JBEZ
PGUM-A121JBEZ
PGUMS0170JBE0
PGUMSA319JBEZ
PMUF-A091JBEZ
PRDAFA163JBEZ
PRDAFA215JBEZ
PRDAFA216JBEZ
PSEL-B954JBEZ
PSEL-B956JBEZ
PSEL-B966JBEZ
PSEL-C011JBEZ
PSEL-C017JBEZ
PSEL-C019JBEZ
PSEL-C037JBEZ
PSEL-C074JBEZ
PSEL-C260JBEZ
PSEL-C261JBEZ
PSEL-C262JBEZ
PSEL-C277JBEZ
PSEL-C282JBEZ
PSEL-C343JBEZ
PSEL-C353JBEZ
PSEL-C354JBEZ
PSEL-C369JBEZ
PSEL-C370JBEZ
PSEL-C371JBEZ
PSEL-C372JBEZ
PSEL-C373JBEZ
PSEL-C374JBEZ
PSEL-C376JBEZ
PSEL-C377JBEZ
PSEL-C378JBEZ
PSEL-C379JBEZ
PSEL-C382JBEZ
PSEL-C938JBEZ
PSEL-D235JBEZ
PSEL-D236JBEZ
PSEL-D274JBEZ
PSHE-A195JBEZ
PSHE-A196JBEZ
PSHE-A273JBEZ
PSKR-A353JBWZ
PSPA-A064JBE0
PSPA-A065JBE0
PSPA-A146JBE0
PSPA-A150JBZZ
PSPF-B072JBEZ
PSPF-B073JBEZ
PSPF-B112JBEZ
PSPF-B113JBEZ
PSPF-B114JBEZ
PTUB-A196JBEZ
PVLVRA040JBEZ
PVLVXA081JBEZ
[ Q ]
QFS-GA062JBZZ
QFS-GA063JBZZ
QFS-GA064JBZZ
QFS-GA065JBZZ
QSPGCA006JBZZ
QSW-PA016DRE0
QTANZA021JBZZ
QTANZA044JBZZ
QW-IZA120JBZZ
[ R ]
RC-AZA046JBE0
RC-EZA250JBZZ
RFIL-A116JBZZ
RFILNA007CBZZ
RFILNA013JBZZ
RH-HXA095JBZZ
RH-HXA096JBZZ
RH-IXA859JBZZ
RH-IXB001JBNA
RH-IZA140JBE0
RHOG-A169JBE0
RH-QXA005JBZZ
N
N
N
N
6
No.
PRICE NEW PART
RANK MARK RANK
1-1-21
1-1-22
1-1-23
1-1-24
1-1-26
1-1-27
1-3-17
1-1-25
1-2-13
1-2-14
1-1-30
1-1-31
1-1-32
1-1-34
1-1-35
1-1-36
1-2-15
1-2-16
1-1-37
1-1-38
1-1-39
1-1-40
1-1-41
1-1-42
1-1-43
1-1-44
1-1-45
1-1-46
1-1-47
1-1-48
1-1-49
1-2-17
1-2-12
1-2-98
1-1-66
1-1-67
1-1-69
1-1-73
1-1-28
1-1-59
1-1-83
1-2-18
1-2-19
1-2-46
1-1-50
1-2-20
1-2-21
1-1-51
1-2-22
1-1-53
1-1-78
1-1-52
1-1-52-1
1-1-52-2
1-1-54
1-3-18
1-3-19
AM
AG
AG
AE
AE
AF
AZ
AP
BE
BC
AF
AF
AC
AC
AC
AD
AE
AC
AC
AC
AC
AG
AD
AE
AP
AE
AC
AC
AC
AC
AC
AC
AC
AC
AB
AB
AC
AK
AG
AG
AG
AH
AE
AF
AZ
AA
AA
AC
AF
AK
AK
AY
AY
AQ
AK
BM
BB
2-2-2-2
2-2-2-3
2-2-2-4
2-2-2-1
2-SA1
2-SW1-3
1-2-26
1-2-27
1-2-28
AF
AE
AF
BA
AH
AB
AN
AU
AU
1-2-62
1-2-63
2-L3 L4
2-L6
2-L5
1-2-67
1-2-66
3-2-23-1
2-IC1
2-IC2
1-2-99
2-PTC1
BE
BG
AY
AR
BE
BC
AZ
BQ
AE
AK
AW
AEX2M14LR
PARTS CODE
RH-TXA008JBZZ
"
RH-VXA002JBZZ
RIC--A022BDE0
RIC--A025BDE0
RMOTSA038JBZZ
RRLYDA008JBZZ
RRLYDA010JBZZ
RR-WZA028JBE0
RTHM-A022JBE0
RTRN-A294JBZZ
RTRN-A305JBZZ
RTRNWA034JBZZ
[ S ]
SPAKCC801JBEZ
[ T ]
TINS-B240JBRZ
TINS-B241JBRZ
TINS-B242JBRZ
TLAB-B709JBRA
TLAB-B777JBRZ
TLAB-C250JBRA
TLAB-C511JBRA
TLAB-C773JBRZ
TLABCC545JBRZ
TLAB-D243JBRZ
TLAB-D246JBRZ
TLAB-E544JBRZ
TLAB-E787JBEZ
TLABMA819JBRA
TSPC-G699JBRZ
[ V ]
VHD1SR139-6-1
"
VHD1SR35-4A-1
VHD1SS133//-1
VHDD25VB+-1
VHDD25VB60+-1
VHDRK36LF011B
VHGPC81716P-1L
VHGPC817XP3-1L
VHGPC853HXP-1R
VHIKIA339F+-1L
VHIMM1431A+-1+
VHINJM2904M-1R
VHISTRL472+-1
VS2SA1020Y+-1+
VS2SA1586G+-1L
VSKRC245M//-3
[ X ]
XBPS730P10000
XBPS740P14JS0
XBPS740P20J00
XCTS740P10000
XTTWW40P16000
No.
PRICE NEW PART
RANK MARK RANK
1-2-93
32-NR1-NR3
2-IC7
2-IC3 IC12
1-3-20
2-RY1
2-MRY1
3-R1
1-2-80
1-1-55
2-CT1
2-TR1
BR
BR
AF
AE
AE
BD
AH
AN
AE
AN
BG
4-5-1
BD
N
1-4-3
1-4-4
1-4-6
1-1-57
1-2-83
1-1-60
1-1-76
1-1-62
1-1-64
1-2-85
1-2-84
1-1-61
1-1-77
1-1-63
1-1-65
AK
AK
AK
AH
AC
AG
AC
AN
AH
AM
AF
AM
AK
N
N
N
2-D2-4
2-D19-21
2-D26-37
2-D1 D38
31-2-65
2-D14
2-PC1
2-PC4.6.8
2-PC5.7.9
2-IC5
2-IC8
2-IC9
2-IC4
2-Q13-15
2-Q2
2-Q11
AB
AB
AC
AA
1-6-12
1-6-9
1-6-11
1-6-10
1-6-14
AF
AB
AF
AC
AC
N
N
AG
AK
N
N
AN
AD
AD
AD
AG
AD
AD
AD
AL
AH
AB
AC
7
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