LG Multi V User manual

System
Outdoor Unit
SERVICE MANUAL R410A
(Exploded View)
MODEL : ARUN Series
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
R410A

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 2 -
1. Specifications ...............................................................................3
2. Function ........................................................................................4
3. Dimensions ...................................................................................5
4. Piping Diagrams ...........................................................................6
5. Wiring Diagrams...........................................................................9
6. Exploded View ............................................................................13
ARUN Series

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 3 -
1. Specification
Specification
Heat Pump
Notes:
1. Capacities are based on the following conditions:
Cooling * Indoor temp. 27°C[80.6°F]DB/ 19°C[66.2°F]WB
* Outdoor temp. 35°C[95°F]DB/ 24°C[75.2°F]WB
* Interconnecting Piping Length 7.5m
* Level Difference of Zero
Heating * Indoor temp. 20°C[68°F]DB/ 15°C[59°F]WB
* Outdoor temp. 7°C[44.6°F]DB/ 6°C[42.8°F]WB
* Interconnecting Piping Length 7.5m
* Level Difference of Zero
2. Capacities are net capacities
3. Due to our policy of innovation some specifications may be changed without prior notification
4. EEV : Electronic Expansion Valve
Heat Pump(208/230V/60Hz)
Conversion Formula
kcal/h= kW x 860
Btu/h = kW x 3412
cfm = m3/min x 35.3
l/s = CMM x 1000/60
HP(Equivalent horsepower)
Model Name
Capacity Cooling kW
kcal/h
Btu/h
Heating kW
kcal/h
Btu/h
Input Cooling kW
Heating kW
Casing Color
Heat Exchanger
Compressor Type
Piston Displacement cm3/rev
Number of Revolution R.P.M
Motor Output x Number W
Starting Method
Oil Type
Oil Charge cc
Fan Type
Motor Output x Number kW
Air Flow RatexNo. of Fan m3/min
Drive
Discharge
Pipe Connctions Liquid Pipes mm(inch)
Gas Pipes mm(inch)
Dimensions (WxHxD) mm
inch
Net Weight kg
lbs
Transmission Cable mm2
Refigerant Refigerant name
Control
Power Supply Ø, V, Hz
45
ARUN038GS2 ARUN048GS2
10.6 13.8
9,070 11,840
36,000 47,000
12.3 14.8
10,580 12,730
42,000 50,500
2.9 3.8
3.1 4.0
Warm Gray Warm Gray
Gold fin Gold fin
DC Scroll DC Scroll
42 42
3,600x1 3,600x1
2.4 x1 2.8 x 1
Direct On Line Direct On Line
FV50S FV50S
1,700 1,700
BLDC BLDC
0.124 x 2 0.124 x 2
110 110
DC INVERTER DC INVERTER
Side Side
Ø9.52(3/8) Ø9.52(3/8)
Ø15.88(5/8) Ø15.88(5/8)
950x1380x330 950x1380x330
37.4x54.3x13 37.4x54.3x13
118 118
260 260
CVV-SB 1.25x2C CVV-SB 1.25x2C
R410A R410A
EEV EEV
1, 208/230, 60 1, 208/230, 60

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 4 -
Functions
2. Functions
Category Function ARUN038GS2 ARUN048GS2
Defrost / Deicing O
High pressure switch O
Low pressure switch O
Phase protection O
Restart delay (3-minutes) O
Self diagnosis O
Soft start O
Test function O
Auto operation(Artificial intelligence) O
Auto restart operation O
Network soluation(LGAP) O
Power Distribution Indicator(PQNUD1S00) O
PI485(PNF-P14A0M/P14A1M) X
Thermistor -
Reliability
Convenience
Others
CAC network
Function
Category Function ARUN038GS2 ARUN048GS2
Network solution(LGAP) O
Simple Central Controller PQCSB101S0
Function Controller PQCSC101S0
PC Central Control Software PQCSS513A0
Deluxe Central Controller PQCSW502A2
PDI(Power Distribution Indicator) PQNUD1S00
CNU2(I-Gateway) PQNFG14B0
Cool/Heat Selector PRDSBM
Dry contact(Indoor Unit) PQDSB
AC Smart PQCSW320A0E
ACP PQCPA11A0E/B11A0E
AC Manager PQCSS520A0E
LONWORKS Gateway(BNU-LW) PQNFB16A1
BACnet Gateway(BNU-BN) PQNFB17B0
LG MV Option
Y-Branch Accessory
Header Accessory
Air guide X
Others
Program
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.

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 5 -
3. Dimensions
Dimensions
950(37-2/5)
640(25-1/8)
633(24-10/11)
157(6-1/8)
180(7)
400(15-3/4)
76, Seongsan-dong, Changwon City, Gyeongnam,
LG Electronics USA, HVAC Division 1000 Sylvan Avenue, Englewood Cliffs, NJ 07632 www.lgusa.com / www.lghvac.com
641-713, Korea
CHASSIS CODE: U3
Outdoor Unit
ARUN038GS2 ARUN048GS2
[Unit:mm(inch)]
206
330(13)
1354(53-3/8)
525
1380(54-3/8)
175(6-7/8)
28(1-1/8)
467

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 6 -
4. Piping Diagrams
Cooling Operation
Piping Diagrams
Heat Pump
EEV
Fil ter
EEV
Fil ter
ss
Accumulator
Inverter
Comp
ss
EEV
Solenoid valve
SVC Valve
Indoor HEX Indoor HEX
Fan
Indoor Unit Indoor Unit
Outdoor Unit
HEX Temperature
Sensor
Outdoor
Temperature
Sensor
High Press ure
Sensor
4-Way Valve
Outdoor
EEV
Sub-cooli ng Circuit
Outlet Temperature
Sensor
Sub-cooling Circuit
Inlet Temperature
Sensor
Sub-Cooling EEV
Sub-Cooler
Liquid Pipe Temp. Sensor
Comp
Disc harge
Temperature
Sensor
Suction
Temperature
Sensor
Low
Pressure
Sensor
Liquid Pipe
Gas Pipe
High Temp. High Press ure Gas
High Temp. High Press ure Liquid
Low Temp. Low Pressure Gas
Oil
Separator
Outdoo r Unit
Pressure Sensor
Pressure Switch
Temperature Sensor
Hot Gas
Valve
Remarks
Strainer
DCDC
Fan
DC
Fan
DC
Fan
Fan
Charging
Port
Charging
Port

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 7 -
Piping Diagrams
EEV
Fil ter
EEV
Fil ter
ss
Accumulator
Inverter
Comp
DC
ss
EEV
Soleno id valve
SVC Valve
Fan DC Fan
Outdoor Unit
HEX Temperature
Sensor
Outdoor
Temperature
Sensor
Indoor HEX
Indoor Unit
Indoor HEX
Indoor Unit
Outdoor
EEV
Sub-cooling Circuit
Outlet Temperature
Sensor
Comp
Disc harge
Temperature
Sensor
Oil
Separator
Liquid Pipe Temp. Sensor
Low
Pressure
Sensor
High Pressure
Sensor
4-Way Valve Gas Pipe
Liquid Pipe
Suction
Temperature
Sensor
Sub-Cooler
Sub-cooling Circuit
Inlet Temperature
Sensor
Sub-Cooling EEV
High Temp. High Pressure Gas
High Temp. High Pressure Liqu id
Low Temp. Low Pressure Gas
Pressure Sensor
Pressure Switch
Temperature Sensor
Remarks
Strainer
Hot Gas
Valve
Outdoo r Unit
Fan Fan
Charging
Port
Charging
Port
Heating Operation

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 8 -
Piping Diagrams
Fil terFil ter
ss
Accumulator
Inverter
Comp
ss
EEV
Soleno id valve
SVC Valve
Indoor Unit Indoor Unit
DC Fan
High Temp. High Pressure Gas
High Temp. High Pressure Liqu id
Low Temp. Low Pressure Gas
DC Fan
Outdoor Unit
HEX Temperature
Sensor
Outdoor
Temperature
Sensor
Outdoor
EEV
Comp
Disc harge
Temperature
Sensor
Low
Pressure
Sensor
High Pressure
Sensor
Suction
Temperature
Sensor
Gas Pipe
Liquid Pipe
Liquid Pipe Temp. Sensor
Sub-cooling Circuit
Inlet Temperature
Sensor
Sub-Cooling EEV
Sub-Cooler
Oil
Separator
Pressure Sensor
Pressure Switch
Temperature Sensor
Sub-cooling Circuit
Outlet Temperature
Sensor
Hot Gas
Valve
Remarks
Strainer
Outdoo r Unit
Fan Fan
Indoor HEX Indoor HEXEEV EEV
Charging
Port
Charging
Port
Oil Return/ Defrost Operation

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 9 -
5. Wiring Diagrams
Heat Pump
Wiring Diagrams

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 10 -
Wiring Diagrams
■Main PCB
(
(4
(
(
(
(
(220
(
(
(
(
(
(
(
(
INVERTER PCB COMMUNICATION TERMINAL)
WAY REVERSING VALVE)
CN09 4WAY
CONSTANT COMP LIQUID VALVE
CN17 LIQ(C)
INVERTER COMP HEATER)
CN10 HEATER(I)
AC FAN POWER SUPPLY)
CN15 AC FAN
CONSTANT COMP MAGNETIC
SWITCH)
CN14 MAGNET(C)
V POWER INPUT TERMINAL)
CONSTANT COMP HEATER)
CN11 HEATER(C)
CN16 LIQ(I)
CN08 AC 220 V
JIG POWER TERMINAL : AC 220V)
JIG1, JIG2
CN29 TO INVERTER BOARD
HOT GAS SOLENOID VALVE)
CN13 HOT GAS
SUBCOOLING CIRCUIT ELECTRONIC EXPANSION VALVE)
OUTDOOR ELECTRONIC EXPANSION VALVE)
CN40 EEV-SC
CN38 EEV-OUT
CONSTANT COMP HIGH
PRESSURE SWITCH)
CN43 P(C) S/W
INV COMP HIGH PRESSUR SWITCH))
CN44 P(I) S/W
INVERTER COMP LIQUID VALVE
(LOW PRESSURE SENSOR)
CN32 P-SENSOR(L)
(CONSTANT COMP CURRENT SENSOR)
CN27 STD_COMP CT1
SC-OUT
(SC CIRCUIT OUTLET TEMP SENSOR)
SC-IN
SUCTION
CN33
(SUCTION TEMPERATURE SENSOR)
DISCHARGE(I)
(INV DISCHARGE TEMP SENSOR)
HEX1
(OUTDOOR HEX TEMP SENSOR 1)
HEX2
CN34
AIR
(OUTDOOR TEMPERATURE SENSOR)
SUCTION
(SUCTION TEMPERATURE SENSOR)
DISCHARGE(C)
CN35
(CONST COMP DISCHARGE
TEMP SENSOR)
CN41 CEN CONTROL
(CENTRAL CONTROL TERMINAL)
CN05 TO JIG
(JIG CONNECTION TERMINAL: LGMV)
CN04 FLASH_WRITE
(ONBOARDING TERMINAL)
(AUTO ADDRESSING SWITCH)
SW02V AUTO ADDRES
SW01S RESET
(RESET BUTTON)
(HIGH PRESSURE SENSOR)
CN30 P-SENSOR(H)
(SC CIRCUIT INTLET TEMP SENSOR)
(OUTDOOR HEX TEMP SENSOR 2)

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 11 -
Wiring Diagrams
■Noise Filter
■Inverter PCB
TO TERMINAL
BLOCK & MAIN PCB
TO TERMINAL
BLOCK & MAIN PCB
TO INVERTER PCB
208/230V POWER OUTPUT TERMINAL
TO REACTOR
TO REACTOR
CN_MOTOR2(WH)
FAN MOTOR WIRE TERMINAL
CN(L(1))
208/230V INVERTER
POWER INPUT
TERMINAL
CN(L(2))
208/230V INVERTER
POWER INPUT
TERMINAL
CN_POWER(BL)
208/230V PCB POWER INPUT TERMINAL
CN_MOTOR1(BL)
FAN MOTOR WIRE
TERMINAL

Explodede View
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 12 -
6. Exploded View
268711B
649950
W6200C
W6200B
W6200A
W6640
346811
268711A
W6631
W0FZZA
RAC31217901
Inv. PCB
Grease
Control Box

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 13 -
Explodede View
435512
137213B
559010
554031
549610
435300
437211
546810
430410
137213A
437212
435513
554160
546810
Mechanical Parts and Panels

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 14 -
Explodede View
165010B
552204 561410B
552117
552102B
165010A
566000 552102A
W52240A
561410A
W52240A
W52240B
552200B
W52240A
552202
148000
552203A
552203B
552200A
263230A
447910
561410C
552115 352114
55211G
552116
148390
263230B
263230C
THERMISTOR 1 263230A Liquid Pipe + sub Cooler IN + Sub Cooler OUT Housing color : yellow
THERMISTOR 2 263230B Inv. discharge + HEX Housing color : purple
THERMISTOR 3 263230C Air + suction Pipe Housing color : black
Cycle Parts

P/NO : MFL42395708
SEPTEMBER, 2008