LG LUU426HV Owner's manual

LG
Brand
LG
Model
LUU426HV
Category
Hardware cooling accessories
Type
Owner's manual
Air Conditioner
SVC MANUAL(Exploded View)
MODEL : AUUW423E [LUU426HV]
CAUTION
Before Servicing the unit, read the safety precautions in General SVC manual.
Only for authorized service personnel.
Internal Use Only
http://biz.lgservice.com
- 2 -
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. Specification
Nominal Capacity Cooling Btu/h
(Min~Rating~Max) Heating Btu/h
Nominal Input Cooling kW
(Min~Rating~Max) Heating kW
Nominal Capacity Cooling Btu/h
(Min~Rating~Max) Heating Btu/h
Nominal Input Cooling kW
(Min~Rating~Max) Heating kW
Indoor Unit
Indoor Unit
ATNH423MLAD
APNH423TLAD
42,000
44,000
4.24
4.31
42,000
44,000
4.67
4.63
Note:
1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 27°C(80.6°F) DB/19°C(66.2°F) WB
- Outdoor Temperature 35°C(95°F) DB/24°C(75.2°F) WB
Heating: - Indoor Temperature 20°C(68°F) DB/15°C(59°F) WB
- Outdoor Temperature 7°C(44.6°F) DB/6°C(42.8°F) WB
Piping Length - Interconnecting Piping Length 7.5m
- Level Difference of Zero
2. Wiring cable size must comply with the applicable local and national
code.
3. The specification may be subject to change without notic for purpose
of improvement.
Indoor Unit
Outdoor Unit
Compressor Type
Refrigerant Charge Charge* g(oz)
Type
Fan Discharge Side/Top
Noise Level(H/L) Sound Press,1m dB(A)±3
Dimensions W*H*D mm (inch)
Net Weight Outdoor kg(lbs)
Piping connections Liquid mm (inch)
Gas mm (inch)
Power Supply Cable(Includes earth) No.*AWG
Interunit Cable(Includes earth) No.*AWG
Max. Piping Length/Elevation m(ft)
Power Supply Ø,V,Hz
Running Current Cooling/Heating A
Air Circulation CMM(CFM)
Additional Refrigerant Charge (Over 7.5m) g/m(oz/ft)
Operation Range Cooling °C(°F)
Heating °C(°F)
Indoor Unit
AUUW423E [LUU426HV]
Rotary
3600(127)
R410A
side
58
950*1380*330 (37.4*54.3*13.0)
103(227)
9.52 (3/8)
15.88 (5/8)
No.*10
No.*18
50(164)/30(98)
1, 208~230, 60
17.7/16.7
55(1942) X 2
40(0.43)
-10(14) ~ 43(109.4)
-15(5) ~ 24(75.2)
2. Function Table
Note :
• O: Applied, • X: Not applied, • - : No relation,
• Option: Model name & price are different according to options, and assembled in factory with main unit.
• Accessory: Installed at field, ordered and purchased separately by the corresponding model name, supplied with separate package.
Defrost / Deicing
High pressure switch
Low pressure switch
Reliability Phase protection
Restart delay (3-minutes)
Self diagnosis
Soft start
Test function
Convenience Auto operation(Artificial intelligence)
Auto restart operation
CAC network
Network soluation(LGAP)
function
PDI(Power Distribution Indicator)
PI485
Special
Low ambient operation
function kit
Others Thermistor
FunctionCategory
AUUW423E
O
O
-
-
O
O
O
O
O
O
X
X
X
O
(program logic)
-
- 3 -
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
- 4 -
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3. Piping Diagrams
Th1
E.E.V.
Accumulator
r
Inverter
Compressor
Heat
High Pressure
S/W
Exchanger
Reversing
Valve
OUTDOOR UNIT
Refrigerant Flow
Cooling
Heating
Gas
(Ø 15.88mm)
Liquid
(
Ø
9.52mm)
Field Piping
Th2
Th4
Th3
Th5
LOC. Description PCB Connector
EEV Electronic Expansion Valve CN-EEV1
Th1 Thermistor for suction pipe temperature CN-TH2
Th2 Thermistor for discharge pipe temperature CN-TH2
Th3 Thermistor for condenser pipe temperature CN-TH1
Th4 Thermistor for outdoor air temperature CN-TH1
Th5 Thermistor for condenser middle pipe temperature CN-TH3
INVERTER PCB ASSY
MAIN PCB ASSY
CN_ POWER
CN-
MOTOR2
CN-
MOTOR1
CN(N) CN(L)
CN-
MAIN(COM)
CN_H/PRESS
CN_C/FAN
CN_4WAY
CN_POWER
CENTRAL
CONTROLLER
POWER SUPPLY
CN_COMM
CN_FLASH
CN_WRITER
CN_TH3
CN_TH2
CN_TH1
CN_CENTRAL
CN_JIG_PC
CN_COM(INV)
CN_EEV1
- 5 -
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. Wiring Diagrams
- 6 -
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
5. Exploded View
435512
552115
435301
137213
447910
559010
549610
437212
435300
552111
237204
552203B
148000
554160
548490
661400
561410
349480
237202
435301
437211
430410
152503
435513
349480
554031B
554031A
352111B
346810
346810
552117
649950
W6200
268711D
559010
552203A
263230C
263230B
268711C
263230D
W6640B
W6640A
268200
W6631
W52240
552200
55211G
552560
566000
552202
W52102
552116
W0FZZ
Note) * Please ensure GCSC since the replacement parts may be changed depending upon the buyer's request.
Please check the correct parts in View RPL(Replacement Part List) on GCSC.
(GCSC Website http://biz.Lgservice.com,)
Model Classification Description Part Number Location Number Remark
AUUW423D Inverter Heating
Compressor 5416A90008Q 554160
-
Harness,Multi EAD42034503 W6631
P/NO : MFL62129313
January, 2010
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LG LUU426HV Owner's manual

LG
Brand
LG
Model
LUU426HV
Category
Hardware cooling accessories
Type
Owner's manual
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