Lg A3uw243fa2, Lmu247hv Owner's Manual

Multi Air Conditioner

SVC MANUAL(Exploded View)

MODEL : A3UW243FA2
LMU247HV

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. A3UW243FA2(LMU247HV)

Capacity(*) Btu/h Class 24000
Nominal Input Cooling kW 0.39~1.43~3.09
(Min~Rated~Max) Heating kW 0.42~2.21~3.10

Running Current

Cooling A 2.8~6.6~14.0

Heating A 3.0~10.2~14.1
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) 59(130.1)
Net Weight(Package) kg(lbs) 63(139)

Compressor

Type Twin-Rotary
Qty x Model 1 x GJT240D
Motor Type BLDC
Oil Charge volume cc 900
Oil Type FVC68D

Refrigerant

Charge (at 7.5m) g(oz) 2100(74.1)
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 3EA
Gas(Cycle A) mm(inch) 9.52(3/8) x 3EA

Piping Length spec.

Main Piping m(ft.) 75(246.1)
Total Branch Piping m(ft.) 25(82)
Each Branch Piping m(ft.) 37.5(123.0)

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

A3UW243FA2 / LMU247HV

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

- 4 -

Copyright ©2010 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 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

OUTDOOR UNIT

Gas Side

Liquid Side

MAIN SVC V/V

Reversing

Valve

EEV-C

EEV-B

EEV-A

TH1

pressure

Compressor

Low

S/W

Accumlator

TH3

TH2

Heat
Exchanger

TH4

MAIN SVC V/V

COOLING
HEATING

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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_PFC_OUT

CN_PFC_IN

CN_4WAY

CN_MOTOR

PIPE LENGTH S/W

CN_PRESS

CN_EEV1

CN_EEV2

CN_EEV3

CN_TH3

CN_TH2

CN_FLASH
CN_LGMV

CN_COM

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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

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

A3UW243FA2

Heating

Compressor TBZ35296001 554160

-

LMU247HV Harness,Multi EAD41346203 W6631

661400A

661400B

661400C

W49810

435300

137213A

137213B

554031

435511A

AIR/PIPE

268711

W4810

435511B

263230B

349600

135500

552111

552112

W6640B

263230A

SUC/DIS

346810

649950

W6640C

566000

561410

552202

552200

W51620A

W51620B

548490

447910

559010

554160

W6631

552116

550140

552203B

552203A

W4986B

W4986A

430410

152503

435512

437210

349480

437211

435301

P/NO : MFL63721205

NOVEMBER, 2010