LG A2UW183FA2 User manual

Multi Air Conditioner
SVC MANUAL(Exploded View)
MODEL : A2UW183FA2
LMU187HV
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

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Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
1. Specification
Note:
1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 26.7°C(80°F) DB/19.4°C(67°F) WB
- Outdoor Temperature 35°C(95°F) DB/23.9°C(75°F) WB
Heating: - Indoor Temperature 21.1°C(70°F) DB/15.6°C(60°F) WB
- Outdoor Temperature 8.3°C(47°F) DB/6.1°C(43°F) WB
Piping Length - Interconnecting Piping Length 7.5m(24.6 ft.)
- 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 prior notice for purpose of improvement.
4. At least two indoor units should be connected.
5. For more Capacity(*),refer to the combination table
Conversion Formula
kW = Btu/h class X 0.0002931
cfm = CMM ×35.3
Outdoor Spec. A2UW183FA2 (LMU187HV)
Capacity(*) Btu/h Class 18,000
Nominal Input Cooling kW 0.26~1.12~2.37
(Min~Rated~Max) Heating kW 0.28~1.29~2.48
Running Current Cooling A1.5~5.2~10.8
Heating A1.5~6.0~11.3
Starting Current Cooling/Heating A -
Power Supply Ø / V / Hz 1/208-230/60
Power Supply Cable (outdoor) No. x AWG 3 x 12
transmission cable (outdoor to indoor) No. x AWG 4 x 18 (Including Earth)
Dimensions W x H x D mm 870 x 808 x 320
inch 34-1/4 x 31-13/16 x 12-19/32
Net Weight kg(lbs) 56(123.5)
Net Weight(Package) kg(lbs) 60(132)
Compressor
Type Twin-Rotary
Qty x Model 1 x GKT141D
Motor Type BLDC
Oil Charge volume cc 570
Oil Type FVC68D
Refrigerant
Charge (at 7.5m) g(oz) 1900(67.0)
Type R410A
Control EEV
Heat Exchanger (Rows x Column x FPI) x No. (2R x 36C x 16) x 1
Defrosting Method Reversing cycle
Fan
Type Propeller
Motor Output(W) x No. of Unit 84 x 1
Capacitor μF/Vac -
Drive DC
Discharge direction(Side/Top) Side
Air Flow Rate * No. of Fan CMM(CFM) 53(1872)
Sound Level(H) Sound Pressure dB(A)+3 51
Piping connections Liquid(Cycle A) mm(inch) 6.35(1/4) x 2EA
Gas(Cycle A) mm(inch) 9.52(3/8) x 2EA
Piping Length spec.
Main Piping m(ft.) 50(164.0)
Total Branch Piping m(ft.) 25(82)
Each Branch Piping m(ft.) 22.5(73.8)
Max. Elevation Difference Outdoor Unit~Indoor Unit m(ft.) 15(49.2)
Indoor Unit~Indoor Unit m(ft.) 7.5(24.6)
Operation Range Cooling ℃(℉) -10~46(14 ~ 114.8)
Heating ℃(℉) -15~24(5 ~ 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
H : These safty switcher are standard or optional features defending on region & country
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 function kit Low ambient operation
Others Thermistor
FunctionCategory
A2UW183FA2 (LMU187HV)
O
X
O
X
O
O
O
O
O
O
O
PQNUD1S00
PMNFP14A0
O (Program logic)
-
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Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only

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Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
3. Piping Diagrams
Exchanger
TH2
TH1
Reversing
Valve
Low
pressure
S/W
Compressor
Accumlator
Heat
TH3
EEV-A
EEV-B
Liquid Side
COOLING
HEATING
TH4
Gas Side
OUTDOOR UNIT
LOC. Description PCB Connector
Th1 Thermistor for discharge pipe temperature CN_TH3
Th2 Thermistor for suction pipe temperature CN_TH3
Th3 Thermistor for outdoor air temperature CN_TH2
Th4 Thermistor for condensing temperature CN_TH2
Note:
EEV: Electronic Expansion Valve

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Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
4. Wiring Diagrams
CN_PRESSCN_4WAY
PIPE LENGTH S/W
CN_PSC1
CN_PSC2
CN_TH3
CN_TH2
CN_FLASH
CN_LGMV
CN_EEV1 CN_COMCN_MOTOR CN_EEV2

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Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
5. Exploded View
W4810
559010
554031
546810
430410
152503
554160
137213A
435300
137213B
435301
349480
437211
435512
437210
435511A
552116
552113
148000
349600
447910
261704
552111
552112
135500
661400A
552200
661400B
552203B
552203A
W4986
561410
W6631
435511B
649950
268711B
263230A
263230B
W6640
AIR/PIPE
SUC/DIS
552202
566000
550140
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
A2UW183FA2 Heating Compressor TBZ33402001 554160 -
(LMU187HV) Harness,Multi 6877A20049N W6631

P/NO : MFL63721204 NOVEMBER, 2010