LG A3UW243FA2 Owner's manual

LG
Brand
LG
Model
A3UW243FA2
Category
Split-system air conditioners
Type
Owner's manual

This manual is also suitable for

LG A3UW243FA2 is a multi air conditioner that offers both cooling and heating functionality. It has a nominal input of 0.39~1.43~3.09kW for cooling and 0.42~2.21~3.10kW for heating, and a capacity of 24000 Btu/h class. The unit is designed to operate in cooling mode at temperatures ranging from -10°C to 46°C, and in heating mode at temperatures ranging from -15°C to 24°C.

The LG A3UW243FA2 comes with a number of features that make it a convenient and efficient choice for climate control. These features include:

  • Auto operation (artificial intelligence): The unit can automatically adjust its operation based on the current temperature and humidity levels, providing optimal comfort without the need for manual intervention.

LG A3UW243FA2 is a multi air conditioner that offers both cooling and heating functionality. It has a nominal input of 0.39~1.43~3.09kW for cooling and 0.42~2.21~3.10kW for heating, and a capacity of 24000 Btu/h class. The unit is designed to operate in cooling mode at temperatures ranging from -10°C to 46°C, and in heating mode at temperatures ranging from -15°C to 24°C.

The LG A3UW243FA2 comes with a number of features that make it a convenient and efficient choice for climate control. These features include:

  • Auto operation (artificial intelligence): The unit can automatically adjust its operation based on the current temperature and humidity levels, providing optimal comfort without the need for manual intervention.
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
- 2 -
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)
-
- 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
Exchanger
TH2
TH1
Reversing
Valve
Low
pressure
S/W
Compressor
Accumlator
Heat
TH3
EEV-A
EEV-B
Liquid Side
COOLING
HEATING
TH4
Gas Side
MAIN SVC V/V
MAIN SVC V/V
EEV-C
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
- 5 -
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. Wiring Diagrams
CN_PRESS
CN_4WAY
PIPE LENGTH S/W
CN_PFC_IN
CN_PFC_OUT
CN_TH3
CN_TH2
CN_COM
CN_FLASH
CN_LGMV
CN_MOTOR
CN_EEV1
CN_EEV2
CN_EEV3
- 6 -
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
5. Exploded View
W4810
559010
554031
346810
430410
152503
554160
137213A
435300
137213B
435301
349480
437211
435512
437210
435511A
552116
550140
349600
268711
447910
548490
649950
552111
135500
263230B
SUC/DIS
AIR/PIPE
263230A
W4986B
W4986A
W6640B
W6640C
552202
561410
W6631
552112
435511B
W49810
661400A
552200
661400B
661400C
552203B
552203A
W51620B
W51620A
566000
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
P/NO : MFL63721205
NOVEMBER, 2010
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LG A3UW243FA2 Owner's manual

LG
Brand
LG
Model
A3UW243FA2
Category
Split-system air conditioners
Type
Owner's manual
This manual is also suitable for

LG A3UW243FA2 is a multi air conditioner that offers both cooling and heating functionality. It has a nominal input of 0.39~1.43~3.09kW for cooling and 0.42~2.21~3.10kW for heating, and a capacity of 24000 Btu/h class. The unit is designed to operate in cooling mode at temperatures ranging from -10°C to 46°C, and in heating mode at temperatures ranging from -15°C to 24°C.

The LG A3UW243FA2 comes with a number of features that make it a convenient and efficient choice for climate control. These features include:

  • Auto operation (artificial intelligence): The unit can automatically adjust its operation based on the current temperature and humidity levels, providing optimal comfort without the need for manual intervention.
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