- 1 -Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only

Room Air ConditionerSVC MANUAL(Exploded View)MODEL : AS-W303DGH0(LS305HV)

CAUTIONBefore 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 ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only

1. Specification

Cooling Capacity kW(Min~Rating~Max) Btu/hHeating Capacity kW(Min~Rating~Max) Btu/hPower Input Cooling/Heating WRunning Current Cooling/Heating AStarting Current Cooling/Heating AEER W/W

Btu/h.WCOP W/WPower Supply Ø / V / HzPower Factor %Air Flow Rate Indoor,Max m3/min(cfm)

Outdoor,Max m3/min(cfm)Moisture Removal l/hSound Level Indoor,H/M/L dB(A)+3

Outdoor,Max dB(A)+3Refrigerant & Charge(at 7.5m) g(oz)Additional Refrigerant Charge g/m(oz/ft)Compressor Type

ModelMotor TypeOil TypeOil Charge ccO.L.P Name

Fan(Indoor) TypeMotor Output W

Fan(outdoor) TypeMotor TypeMotor Output W

Circuit Breaker* APower Supply Cable No.*mm2

Power and Transmission Cable No.*mm2+No.*mm2

Piping Liquid Side mm(in)Connections Gas Side mm(in)Drain Hose O.D , I.D mm(in)Dimension Indoor(W*H*D) mm

inchOutdoor(W*H*D) mm

inchNet Weight Indoor kg(lbs)

Outdoor kg(lbs)Operation Range Cooling(Outdoor) °C(°F)

Heating(Outdoor) °C(°F)Max. Piping Length m(ft)Max. Elevation Difference m(ft)Tool Code(Chassis) Indoor + OutdoorFunctions Temperature Control

Plasma FilterPrefilter(washable/anti-fungus)Auto CleanCHAOS Wind(Auto Wind)Steps, Fan/Cool/HeatAirflow Direction Control(up&down)Airflow Direction Control(left&right)Remocon TypeSetting Temperature CoolingRange HeatingAuto Operation (Micom Control)Auto Changeover (Micom Control)Self DiagnosisTimerSleep OperationSoft Dry OperationRestart Delay(minute)Deice Control(Defrost)Hot StartJet CoolLow Ambient OperationSpecial Function

Network Functions Dry ContactNetwork Solution(LGAP)PI485

Models AS-W303DGH03.5~7.9~7.9

12000~27000~270003.5~8.5~8.5

12000~29000~290003100/320013.6/14.013.1/14.0

2.558.712.66

1/208~230/6097

21(742)58(2048)

2.847/43/41

58R410A 1830(64.6)

20(0.22)SCROLL + ROTARY

5CS130XCC03 + GK141KAABLDC + AC

POE480 + 350

-Cross Flow Fan

91Propeller

AC14030

3*2.084*0.82

6.35(1/4)15.88(5/8)

21.5,16(0.85,0.63)1209*346*20547.6*13.6*8.1800*870*320

31.5*34.3*12.617(37.5)67(147.7)

-5°C~43°C (23~109.4) -5°C~27°C(23~80.6)

30(98.4)15(49)

SD+UE1Thermistor

NeoOO

O(-)3/4/4Auto

ManualWireless LCD

18 ~ 3016 ~ 30

-OO

24h, On/OffOO2OOOO----

Note:O : Applied, - : No relation* For circuit breaker rating, please conform to local standards wherever necessary.

❈ Some of functions are slightly different depending upon models.❈ The specification may be subject to change without prior notice for purpose of

improvement.

- 3 -Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only

2. Piping Diagrams

INDOOR UNIT OUTDOOR UNIT

HEATEXCHANGE(EVAPORATOR)

HEATEXCHANGE(CONDENSER)

EEV

COMPRESSOR

ACCUMULATOR

GAS SIDE

3-WAY VALVE

LIQUID SIDE

3-WAY VALVETh2

Th1

COOLING

HEATING

REVERSINGVALVE

Th5 Th6

Th7Th9

Th3

Th8Constant Inverter

❈ EEV : Electronic Expansion Valve

LOC. Description PCB Connector

Th1 Thermister for indoor air temperatureCN-TH1(Indoor)

Th2 Thermister for indoor pipe(in) temperature

Th3 Thermister for Indoor pipe(out) temperature CN-TH2(Indoor)

Th4 Thermister for outdoor heat sink temperature CN-TH1(Outdoor)

Th5 Thermister for outdoor pipe temperatureCN-TH2(Outdoor)

Th6 Thermister for outdoor air temperature

Th7 Thermister for outdoor discharge pipe temperature(Inverter)CN-TH3(Outdoor)

Th8 Thermister for outdoor suction pipe temperature (Inverter)

Th9 Thermister for outdoor discharge pipe temperature(Constant) CN-TH4 (Outdoor)

- 4 -Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only

3. Wiring Diagrams

CN-MOTOR1 CN-L/R(BL)

CN-TH1

CN-DISP1(WH)

CN-DISP2(BL)CN-HVBCN-U/D(WH)

CN-12V

CN-TH2

Indoor Unit

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CN_4WAY

CN_OIL/S

CN_PRESS

CN_FAN(A)

CN-COIL1CN-COIL2

CN_LEV1

CN_TH4CN_TH3

CN_TH2CN_TH1

Outdoor Unit

- 6 -Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only

Indoor Unit

4. Exploded View

152302

159830 342800

359011

131410

135511 733010

249951

135311

147581AUpper

Lower147581B

135516

268711A

146811B

W6640

346810

266090

567480C

268711C

267110135314

149304

152313

135316

146811A

567480A

35211B

354210B

352150

354210A

Part forPlasma Model

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,)

- 7 -Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only

Outdoor Unit

4355

11

5660

00

5541

60A

5501

40

5521

16

5541

60C

5674

80E

5522

03A

5521

135522

04

5522

03B

5540

3156

7480

D

5585

11

4355

12

5590

10

3496

00B

4353

01

3494

80

5468

10

4479

10

4372

10

4304

10

4372

11

1525

03

5484

90

1372

13B

1372

13A

4353

00

2617

04

5521

13

2499

51

5522

04

5674

80G

5521

11

5521

15

5614

10

5585

11F

3496

00A

CONS

DISC

HARG

E

INTER

NAL

OLP T

YPE

COMP

RESS

ORIN

TERN

AL

OLP

TYP

E CO

MPR

ESSO

R

INV.

DISC

HARG

ESU

CTIO

N 6614

00

AIR/

TUBE

SEN

SOR

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,)

- 8 -Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only

P/NO : 3828A20195Y DECEMBER, 2007