LG Multi V III Solo ARUN LM3 Series User manual

Internal Use Only
http://biz.lgservice.com
CAUTION
Before Servicing the unit, read the safety precautions in General SVC manual.
Only for authorized service personnel.
Outdoor Unit
SERVICE MANUAL
(Exploded View)
MODEL : ARUN***LM3 Series
R410A
Solo - Heat Pump

1. Specifications ...............................................................................3
2. Function ........................................................................................4
3. Dimensions ...................................................................................5
4. Piping Diagrams ...........................................................................6
5. Wiring Diagrams.........................................................................17
6. Exploded View ............................................................................22
ARUN***LM3 Series
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Copyright ©2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only

1. Specifications
Specification
Heat Pump(50Hz/60Hz)
Notes:
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. Capacities are net capacities
3. EEV : Electronic Expansion Valve
4. Wiring cable size must comply with the applicable local and national code.
5. Due to our policy of innovation some specifications may be changed without
prior notification
Conversion Formula
RT = kW x 0.284
kcal/h = kW x 860
Btu/h = kW x 3412
cfm = m3/min x 35.3
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Copyright ©2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
HP 8 10 12
Model Name
Combination Unit ARUN80LM3 ARUN100LM3 ARUN120LM3
Independent Unit ARUN80LM3 ARUN100LM3 ARUN120LM3
Capacity
Cooling
kW 22.4 28.0 33.6
kcal/h 19,300 24,100 28,900
Btu/h 76,400 95,900 114,700
Heating
kW 25.2 31.5 37.8
kcal/h 21,700 27,100 32,500
Btu/h 86,000 107,500 129,000
Power Input Cooling kW 5.55 7.20 9.30
Heating kW 5.96 7.60 9.34
Casing Color Warm Gray
Morning Gray
Warm Gray
Morning Gray
Warm Gray
Morning Gray
Heat Exchanger Gold fin Gold fin Gold fin
Compressor
Type DC Scroll DC Scroll DC Scroll
Piston Displacement cm3/rev 52.0 40.46 + 81.02 40.46 + 81.02
Number of Revolution R.P.M 3,600 3,600 + 2,891 3,600 + 2,891
Motor Output x Number W 5,356 4,200 + 5,300 4,200 + 5,300
Starting Method Direct On Line Direct On Line Direct On Line
Oil Type FVC68D(PVE) FVC68D(PVE) FVC68D(PVE)
Oil Charge cc 2,825 3,975 3,975
Fan
Type Propeller fan Propeller fan Propeller fan
Motor Output x Number W 750 x 1 750 x 1 750 x 1
Air Flow Rate(High) CMM 180 190 190
CFM 6,300 6,700 6,700
Drive DC INVERTER DC INVERTER DC INVERTER
Discharge Side / Top TOP TOP TOP
Pipe
Connctions
Liquid Pipes mm(inch) 9.52(3/8) 9.52(3/8) 12.7(1/2)
Gas Pipes mm(inch) 19.05(3/4) 22.2(7/8) 28.58(1-1/8)
Dimensions(WxHxD) mm 920 × 1,680 × 760 920 × 1,680 × 760 920 × 1,680 × 760
inch 36.2 × 66.1 × 29.9 36.2 × 66.1 × 29.9 36.2 × 66.1 × 29.9
Net Weight kg 175 218 218
lbs 385 480 480
Protection Devices
High pressure
protection
High pressure sensor,
High pressure switch
High pressure sensor,
High pressure switch
High pressure sensor,
High pressure switch
Comperssor/
Fan
Over-heat protection/
Fan
driver overload protector
Over-heat protection/
Fan
driver overload protector
Over-heat protection/
Fan
driver overload protector
Inverter Over-heat protection,
Over-current protection
Over-heat protection,
Over-current protection
Over-heat protection,
Over-current protection
Communication Cable mm2(VCTF-SB) 1.0 ~ 1.5 × 2C 1.0 ~ 1.5 × 2C 1.0 ~ 1.5 × 2C
Refigerant Refigerant name R410A R410A R410A
Control EEV EEV EEV
Power Supply Ø , V, Hz 3, 380~415, 50 3, 380~415, 50 3, 380~415, 50
3, 380, 60 3, 380, 60 3, 380, 60

Functions
Copyright ©2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 4 -
2. Functions
Category Function Multi V III Solo – Heat pump
Defrost/ Deicing O
High pressure switch O
Phase protection O
Restart delay(3-minutes) O
Self diagnosis O
Soft start O
Trial operation O
Auto operation(Artificial intelligence) O
Auto restart operation O
Network Solution(LGAP) O
Power Distribution Indicator(PNU-D1S00) O
Reliability
Convenience
CAC network
Function
O : Applied X : Not applied - : No reation
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 separated package.
O : Applied X : Not applied - : No reation
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
separated package.
Device Multi V III Solo – Heat pump
Central Controller
Simple Controller PQCSB101S0
AC Ez PQCSZ250S0
Function controller PQCSB101S0 + PQCSC101S0
Function Scheduler PQCSB101S0 + PQCSD130A0
AC Smart ll PQCSW320A1E
Expansion Kit PQCSE440U0
Option Kit PQCSE341A0 / PQCSE342A0
ACP PQCPA11A0E / PQCPB11A0E
AC Manager PQCSS520A0E
BNU LONWORKS Gateway PQNFB16A1
BACnet Gateway PQNFB17B0
Do Kit PQNFP00T0
Power Distribution Indicator(PDI) PQNUD1S00
Cool / Heat Selector PRDSBM
ODU Dry Contact PQDSBCDVM0
Program LG MV Option
Other
Y branch Accessory
Header branch Accessory
Air Guide Accessory
Refrigerant Charging Kit PRAC1

Copyright ©2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 5 -
Dimensions
Outdoor Unit
ARUN80LM3
3. Dimensions

Dimensions
Copyright ©2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 6 -
Outdoor Unit
ARUN100LM3 ARUN120LM3

Copyright ©2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 7 -
4. Piping Diagrams
Piping Diagrams
4.1 Heat Pump Model
4.1.1 8HP(UX2 1Comp.)
Cooling Operation
M
Electronic
Expansion
Valve
IDU Air
Temperature
Thermistor
Indoor Unit
IDU Hex
Temperature
Thermistor
IDU Hex
Temperature
Thermistor
2 Way
Flare Connection
2 Way
Flare Connection
M
Electronic
Expansion
Valve
IDU Air
Temperature
Thermistor
Indoor Unit
IDU Hex
Temperature
Thermistor
IDU Hex
Temperature
Thermistor
2 Way
Flare Connection
2 Way
Flare Connection
Sub-Cooling HEX
High Temperature High Pressure Gas
High Temperature High Pressure Liquid
Low Temperature Low Pressure Gas
M
ODU Air
Temperature
Thermistor
ODU Hex.
Temperature
Thermistor
Liquid pipe
Temperature
Thermistor
Outdoor
Electronic
Expansion
Valve
Sub-Cooling
Electronic
Expansion
Valve
Accumulator
4 way
Valve
Inverter
Compressor
Oil
Separator
High
Pressure
Switch
S
Suction
Temperature
Thermistor
Low
Pressure
Sensor
High
Pressure
Sensor
Discharge
Temperature
Thermistor
SC Circuit
Outlet
Temperature
Thermistor
Gas Pipe - 2 Way
Welding Connection
Liquid Pipe - 2 Way
Welding Connection
Outdoor Unit
ss
Check valve
EEV
Solenoid valve
SVC Valve
Pressure Sensor
Pressure Switch
Temperature Sensor
Remarks
Strainer

Copyright ©2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 8 -
Piping Diagrams
Electronic
Expansion
Valve
IDU Air
Temperature
Thermistor
IDU Hex
Temperature
Thermistor
IDU Hex
Temperature
Thermistor
2 Way
Flare Connection
2 Way
Flare Connection
M
Electronic
Expansion
Valve
IDU Air
Temperature
Thermistor
IDU Hex
Temperature
Thermistor
IDU Hex
Temperature
Thermistor
2 Way
Flare Connection
2 Way
Flare Connection
Sub-Cooling HEX
High Temperature High Pressure Gas
High Temperature High Pressure Liquid
Low Temperature Low Pressure Gas
ODU Air
Temperature
Thermistor
ODU Hex.
Temperature
Thermistor
Liquid pipe
Temperature
Thermistor
Outdoor
Electronic
Expansion
Valve
Sub-Cooling
Electronic
Expansion
Valve
Accumulator
4 way
Valve
Inverter
Compressor
Oil
Separator
High
Pressure
Switch
S
Suction
Temperature
Thermistor
Low
Pressure
Sensor
High
Pressure
Sensor
Discharge
Temperature
Thermistor
SC Circuit
Outlet
Temperature
Thermistor
Gas Pipe - 2 Way
Welding Connection
Liquid Pipe - 2 Way
Welding Connection
M
Indoor Unit Indoor Unit
M
Outdoor Unit
Heating Operation
ss
Check valve
EEV
Solenoid valve
SVC Valve
Pressure Sensor
Pressure Switch
Temperature Sensor
Remarks
Strainer

Copyright ©2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 9 -
Piping Diagrams
Sub-Cooling HEX
High Temperature High Pressure Gas
High Temperature High Pressure Liquid
Low Temperature Low Pressure Gas
ODU Air
Temperature
Thermistor
ODU Hex.
Temperature
Thermistor
Liquid pipe
Temperature
Thermistor
Outdoor
Electronic
Expansion
Valve
Sub-Cooling
Electronic
Expansion
Valve
Accumulator
4 way
Valve
Inverter
Compressor
Oil
Separator
High
Pressure
Switch
S
Suction
Temperature
Thermistor
Low
Pressure
Sensor
High
Pressure
Sensor
Discharge
Temperature
Thermistor
SC Circuit
Outlet
Temperature
Thermistor
Gas Pipe - 2 Way
Welding Connection
Liquid Pipe - 2 Way
Welding Connection
M
Outdoor Unit
Electronic
Expansion
Valve
IDU Air
Temperature
Thermistor
IDU Hex
Temperature
Thermistor
IDU Hex
Temperature
Thermistor
2 Way
Flare Connection
2 Way
Flare Connection
M
Indoor Unit
Electronic
Expansion
Valve
IDU Air
Temperature
Thermistor
IDU Hex
Temperature
Thermistor
IDU Hex
Temperature
Thermistor
2 Way
Flare Connection
2 Way
Flare Connection
M
Indoor Unit
Oil Return/ Defrost Operation
ss
Check valve
EEV
Solenoid valve
SVC Valve
Pressure Sensor
Pressure Switch
Temperature Sensor
Remarks
Strainer

Copyright ©2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 10 -
Piping Diagrams
Electronic
Expansion
Valve
IDU Air
Temperature
Thermistor
IDU Hex
Temperature
Thermistor
IDU Hex
Temperature
Thermistor
2 Way
Flare Connection
2 Way
Flare Connection
M
Indoor Unit
Electronic
Expansion
Valve
IDU Air
Temperature
Thermistor
IDU Hex
Temperature
Thermistor
IDU Hex
Temperature
Thermistor
2 Way
Flare Connection
2 Way
Flare Connection
M
Indoor Unit
Sub-Cooling HEX
High Temperature High Pressure Gas
High Temperature High Pressure Liquid
Low Temperature Low Pressure Gas
ODU Air
Temperature
Thermistor
ODU Hex.
Temperature
Thermistor
Liquid pipe
Temperature
Thermistor
Outdoor
Electronic
Expansion
Valve
Sub-Cooling
Electronic
Expansion
Valve
Accumulator
4 way
Valve
Inverter
Compressor
Oil
Separator
High
Pressure
Switch
S
Suction
Temperature
Thermistor
Low
Pressure
Sensor
High
Pressure
Sensor
Discharge
Temperature
Thermistor
SC Circuit
Outlet
Temperature
Thermistor
Gas Pipe - 2 Way
Welding Connection
Liquid Pipe - 2 Way
Welding Connection
Constant
Speed
Compressor
Oil
Separator
Discharge
Temperature
Thermistor
M
Outdoor Unit
Cooling Operation
ss
Check valve
EEV
Solenoid valve
SVC Valve
Pressure Sensor
Pressure Switch
Temperature Sensor
Remarks
Strainer
4.1.2 10, 12HP(UX2 2Comp.)