Multi Air ConditionerSVC MANUAL(Exploded View)MODEL : A7UW406FA3[FM40AH UH3]

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

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 prior notice for purpose of improvement.

Conversion FormulakW = Btu/h x 0.0002931cfm = CMM x 35.3

Outdoor Unit

Nominal Capacity Cooling kW (Min~Rated~Max) Btu/h

Heating kW Btu/h

Nominal Input Cooling kW (Min~Rated~Max) Heating kW Energy label Testing CombinationRunning Current Cooling A

Heating A Starting Current (Cooling/Heating) A Power Supply Ø / V / Hz Power Supply Cable (outdoor) No.x mm2

Power and transmission cable (outdoor to BD) No.x mm2

Power and transmission cable (BD to indoor) No.x mm2

Dimensions W*H*D mm(inch) Net Weight kg(lbs) Max. Number of Connectable Indoor Units Compressor (Inverter) Type

Qty x Model Motor Type Oil Charge volume cc Oil Type

Refrigerant Charge (at 5m) g(oz) Type Control

Heat Exchanger Rows x Column x FPI Defrosting Method

Fan Capacitor µF/Vac Drive Discharge direction Side / Top Air Flow Rate CMM(CFM)

Noise Level(H/L) Sound Pressure at 1m dB(A)±3 Piping connections Liquid(Ø) mm(inch)

Gas(Ø) mm(inch) Max. Interunit Piping Length Total Piping(Main+Total Branch) m

Main Piping m Total Branch Piping m Each Branch Piping m

Max. Elevation Difference Indoor Unit~Outdoor Unit m Indoor Unit~Indoor Unit m

Outdoor Unit A7UW406FA3[FM40AH UH3]

2.8~11.7~13.59,600~40,000~46,000

3.2~13.5~15.011,040~46,000~51,000

1.1~3.63~4.651.4~3.65~4.84

A/AMS07AH N40 * 7EA

6.2~16.0~20.06.9~16.4~20.5

-1/220~240/50

3*3.54*1.25(Including Earth)4*0.75(Including Earth)

900*1165*370(35.4*45.8*14.5)93(205)

7Twin-Rotary

5JD420ZBLDC1300

FV50S4,400(155)

R410AEEV

2R x 50C x 18Reversing cycle

6 / 370DirectSide

53(1,872) x 258

9.52(3/8)19.05(3/4)

1004060153015

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 / DeicingHigh pressure switchLow pressure switch

Reliability Phase protectionRestart delay (3-minutes)Self diagnosisSoft startTest function

Convenience Auto operation(Artificial intelligence)Auto restart operation

CAC networkNetwork soluation(LGAP)

function PDI(Power Distribution Indicator)PI485

Special function kit Low Ambient KitOthers Thermistor

FunctionCategory A7UW406FA3 [FM40AH UH3]

OXOXOOOXOOO

PQNUD1S00PMNFP14A0

O (Logic)-

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

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

3. Piping Diagrams

LOC. Description PCB Connector

Th1 Thermistor for outdoor air temperature CN_TH2

Th2 Thermistor for condensing temperature CN_TH2

Th3 Thermistor for discharge pipe temperature CN_TH3

Th4 Thermistor for suction pipe temperature CN_TH3

S/V(1) Solenoid Valve for Hot Gas CN_H/GAS

S/V(2) Solenoid Valve for Oil Separator CN_OIL/S

L/P Low Pressure Switch CN_PRESS

Cooling

Refrigerant flow)Outdoor Unit

Heating

Field pipingGas(Ø19.05)

Field pipingLiquid(Ø9.52)

Accumulator

Th4

S/V(2)

L/P

Compressor

Th3

Oil Separator

R/Valve

HeatExchanger

S/V(1)S/V(1)

Th1

Th2

S/V(1)

CN_PFC_IN

CN_PFC_OUT

CN_COM

CN_PRESSCN_4WAY

CN_H/GAS

CN_FAN(B)

CN_OIL/S

CN_FAN(A)

CN_TH3

CN_TH2

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

4. Wiring Diagrams

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

5. Exploded View

4372

12

4355

12

3496

00

6499

50

4479

10

5660

00

5484

90

4304

11

5522

03B

5522

03A

5468

10

5468

1055

2204

5521

14

5521

125521

115674

80D

5674

80E

5590

1043

7210

4353

01

4372

11

5541

60

5614

10A

5521

1656

1410

C

5614

10B

W49

86B

W49

86A

2687

11

W62

00

W66

40B

W66

40A

W69

20

W0C

ZZB

1372

13

4355

11

1480

00

5540

31B

5540

31A

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,)

P/NO : MFL37468318 January, 2008