LG A5UW406FA3 User manual

Multi Air Conditioner
SVC MANUAL(Exploded View)
MODEL : A5UW406FA3[FM38AH UH3]
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 ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
1. Specification
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 Combination
Running 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 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 7.5m) 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) Sound Pressure at 1m dB(A) 3
Piping connections Liquid(Ø) mm(inch)
Gas(Ø) mm(inch)
Max. Interunit Total of Each Room m
Piping Length For One Room m
Max. Elevation Indoor Unit~Outdoor Unit m
Indoor Unit~Indoor Unit m
Outdoor Unit A5UW406FA3[FM38AH UH3]
2.8~11.7~13.5
9,600~40,000~46,000
3.2~13.5~15.0
11,040~46,000~51,000
1.1~3.63~4.65
1.4~3.65~4.84
A / A
MS09AH N40 * 3EA + MS12AH N40 * 2EA
6.2~16.0~20.0
6.9~16.4~20.5
-
1/220~240/50
3x3.5
4 x 0.75(Including Earth)
900*1165*370(35.4*45.8*14.5)
95(209)
5
Twin-Rotary
5JD420Z
BLDC
1300
FV50S
4,400(155.2)
R410A
EEV
2R x 50C x 18
Reversing cycle
6 / 370
Direct
Side
53(1872)*2
58
6.35(1/4)*5EA
9.52(3/8)*5EA
85
25
15
7.5
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 Formula
kW = Btu/h x 0.0002931
cfm = CMM x 35.3

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 / 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 Kit
Others Thermistor
FunctionCategory
A5UW406FA3 [FM38AH UH3]
O
X
O
X
O
O
O
X
O
O
O
PQNUD1S00
PMNFP14A0
O (Logic)
-
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Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only

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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 piping
Gas(Ø9.52)
Field piping
Liquid(Ø6.35)
EEV-E
Accumulator
Th4
S/V(2)
L/P
Compressor
EEV-D
EEV-C
EEV-B
EEV-A
Th3
Oil Separator
R/Valve
Heat
Exchanger
S/V(1)
S/V(1)
Th1
Th2
S/V(1)

CN_PFC_IN
CN_PFC_OUT
CN_COM
CN_TH3
CN_TH2
CN_EEV3
CN_EEV1
CN_EEV4
CN_EEV2
CN_EEV5
CN_PRESSCN_4WAY
CN_H/GAS
CN_FAN(B)
CN_OIL/S
CN_FAN(A)
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Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
4. Wiring Diagrams

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Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
5. Exploded View
437212
554031A
435512
349600
649950
447910
566000
548490
430411
546810
546810 552204
552114
552112
552111
554031B
567480D
567480E
559010
437210
435301
437211
554160
561410A
552116
561410C
561410B
W4986B
W4986A
268711
W6200
W6640B
W6640C
W6640A
W6920
W0CZZB
137213
435511
W49810
661400A
552200
661400B
661400C
552203B 552203A
661400D
661400E
W51620B
W51620A
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 : MFL37468317
January, 2008