LG Multi V Series User manual

Multi V Air Conditioner
SVC MANUAL(Exploded View)
MODEL : ARNU07GB3G4
ARNU09GB3G4
ARNU12GB3G4
ARNU15GB3G4
ARNU18GB4G4
ARNU24GB4G4
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 ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
1. Specification
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(24.6ft)
• 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(24.6ft)
• Level Difference of Zero
2. Capacities are net capacities
3. Due to our policy of innovation some specifications may be changed without notification
4. EEV: Electronic Expansion Valve
5. To be added for more available Models
Conversion Formula
kcal/h= kW x 860
Btu/h = kW x 3412
cfm = m3/min x 35.3
l/s = CMM x 1000/60
Type Ceiling Concealed Duct (Built-in)
Accessory PBSGB30/PBSC30 PBSGB30/PBSC30 PBSGB30/PBSC30
Model Unit ARNU07GB3G4 ARNU09GB3G4 ARNU12GB3G4
Cooling Capacity
kW 2.2 2.8 3.6
kcal/h 1,900 2,400 3,100
Btu/h 7,500 9,600 12,300
Heating Capacity
kW 2.5 3.2 4
kcal/h 2,200 2,800 3,400
Btu/h 8,500 10,900 13,600
Casing Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate
Dimensions
(WxHxD) Body mm 820 x 190 x 575 820 x 190 x 575 820 x 190 x 575
inch 32-9/32 x 7-15/32 x 22-5/8 32-9/32 x 7-15/32 x 22-5/8 32-9/32 x 7-15/32 x 22-5/8
Coil Rows x Columns x FPI 2 x 11 x 21 2 x 11 x 21 2 x 11 x 21
Face Area m30.16 0.16 0.16
Fan
Type Sirocco Fan Sirocco Fan Sirocco Fan
Motor Output x Number W 19 x 1, 5 x 1 19 x 1, 5 x 1 19 x 1, 5 x 1
Running Current A 0.76 0.76 0.76
Air Flow Rate(H / M / L)
(High Mode-factor set)
External Static Pressure
CMM 8.0 / 6.5 / 5.5 9.0 / 7.0 / 6.0 10.0 / 8.0 / 6.5
cfm 283 / 229 / 194 318 / 247 / 212 353 / 283 / 229
mmAq(Pa) 2(20) 2(20) 2(20)
Air Flow Rate(H / M / L)
(Standard Mode)
External Static Pressure
CMM 8.0 / 6.5 / 5.5 9.0 / 7.0 / 6.0 10.0 / 8.0 / 6.5
cfm 283 / 229 / 194 318 / 247 / 212 353 / 283 / 229
mmAq(Pa) 0(0) 0(0) 0(0)
Drive Direct Direct Direct
Motor type BLDC BLDC BLDC
Temperature Control
Microprocessor, Thermostat
for cooling and heating
Microprocessor, Thermostat
for cooling and heating
Microprocessor, Thermostat
for cooling and heating
Sound Absorbing Thermal Insulation Material Foamed polystrene Foamed polystrene Foamed polystrene
Air Filter - - -
Safety Device Fuse, Thermal Fuse for Fan Motor Fuse, Thermal Fuse for Fan Motor Fuse, Thermal Fuse for Fan Motor
Pipe Connections
Liquid Side mm(inch) Ø6.35(1/4) Ø6.35(1/4) Ø6.35(1/4)
Gas Side mm(inch) Ø12.7(1/2) Ø12.7(1/2) Ø12.7(1/2)
Drain Pipe(Internal Dia.) mm(inch) 25.4(1) 25.4(1) 25.4(1)
Net Weight kg(lbs) 21(46.3) 21(46.3) 21(46.3)
Noise Level(Sound Press, 1m, H / M / L) dB(A) 33 / 32 / 29 34 / 33 / 32 35 / 34 / 33
Power Supply Ø, V, Hz 1, 220-240, 50 1, 220-240, 50 1, 220-240, 50
1, 220, 60 1, 220, 60 1, 220, 60
Refrigerant Control EEV EEV EEV
Power cable mm2CV1.5 x 3C CV1.5 x 3C CV1.5 x 3C
Transmission cable mm2CVV-SB 1.0~1.5 x 2C CVV-SB 1.0~1.5 x 2C CVV-SB 1.0~1.5 x 2C

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Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
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(24.6ft)
• 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(24.6ft)
• Level Difference of Zero
2. Capacities are net capacities
3. Due to our policy of innovation some specifications may be changed without notification
4. EEV: Electronic Expansion Valve
5. To be added for more available Models
Conversion Formula
kcal/h= kW x 860
Btu/h = kW x 3412
cfm = m3/min x 35.3
l/s = CMM x 1000/60
Type Ceiling Concealed Duct (Built-in)
Accessory PBSGB30/PBSC30 PBSGB40/PBSC40 PBSGB40/PBSC40
Model Unit ARNU15GB3G4 ARNU18GB4G4 ARNU24GB4G4
Cooling Capacity
kW 4.5 5.6 7.1
kcal/h 3,900 4,800 6,100
Btu/h 15,400 19,100 24,200
Heating Capacity
kW 5 6.3 8
kcal/h 4,300 5,400 6,900
Btu/h 17,100 21,500 27,300
Casing Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate
Dimensions
(WxHxD) Body mm 820 x 190 x 575 1,100 x 190 x 575 1,100 x 190 x 575
inch 32-9/32 x 7-15/32 x 22-5/8 43-5/16 x 7-15/32 x 22-5/8 43-5/16 x 7-15/32 x 22-5/8
Coil Rows x Columns x FPI 2 x 11 x 21 3 x 10 x 18 3 x 10 x 18
Face Area m30.16 0.23 0.23
Fan
Type Sirocco Fan Sirocco Fan Sirocco Fan
Motor Output x Number W 19 x 1, 5 x 1 19 x 2 19 x 2
Running Current A 0.76 0.97 0.97
Air Flow Rate(H / M / L)
(High Mode-factor set)
External Static Pressure
CMM 11.0 / 10.0 / 8.0 14.0 / 12.0 / 10.0 17.0 / 15.0 / 10.0
cfm 388 / 353 / 283 494 / 424 / 353 600 / 530 / 353
mmAq(Pa) 2(20) 2(20) 2(20)
Air Flow Rate(H / M / L)
(Standard Mode)
External Static Pressure
CMM 11.0 / 10.0 / 8.0 14.0 / 12.0 / 10.0 17.0 / 15.0 / 10.0
cfm 388 / 353 / 283 494 / 424 / 353 600 / 530 / 353
mmAq(Pa) 0(0) 0(0) 0(0)
Drive Direct Direct Direct
Motor type BLDC BLDC BLDC
Temperature Control
Microprocessor, Thermostat
for cooling and heating
Microprocessor, Thermostat
for cooling and heating
Microprocessor, Thermostat
for cooling and heating
Sound Absorbing Thermal Insulation Material Foamed polystrene Foamed polystrene Foamed polystrene
Air Filter - - -
Safety Device Fuse, Thermal Fuse for Fan Motor Fuse, Thermal Fuse for Fan Motor Fuse, Thermal Fuse for Fan Motor
Pipe Connections
Liquid Side mm(inch) Ø6.35(1/4) Ø6.35(1/4) Ø9.52(3/8)
Gas Side mm(inch) Ø12.7(1/2) Ø12.7(1/2) Ø15.88(5/8)
Drain Pipe(Internal Dia.) mm(inch) 25.4(1) 25.4(1) 25.4(1)
Net Weight kg(lbs) 21(46.3) 26(57.3) 26(57.3)
Noise Level(Sound Press, 1m, H / M / L) dB(A) 41 / 40 / 37 43 / 40 / 37 46 / 43 / 37
Power Supply Ø, V, Hz 1, 220-240, 50 1, 220-240, 50 1, 220-240, 50
1, 220, 60 1, 220, 60 1, 220, 60
Refrigerant Control EEV EEV EEV
Power cable mm2CV1.5 x 3C CV1.5 x 3C CV1.5 x 3C
Transmission cable mm2CVV-SB 1.0~1.5 x 2C CVV-SB 1.0~1.5 x 2C CVV-SB 1.0~1.5 x 2C

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Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
2. List of Functions
Air supply outlet
Airflow direction control(left & right)
Airflow direction control(up & down)
Auto swing(left & right)
Air flow Auto swing(up & down)
Airflow steps(fan/cool/heat)
Chaos swing
Chaos wind(auto wind)
Jet cool(Power wind)
Swirl wind
Deodorizing filter
Air purifying Plasma air purifier
Prefilter(washable / anti-fungus)
Drain pump
Installation E.S.P. control
Electric heater(operation)
High ceiling operation
Hot start
Reliability Self diagnosis
Soft dry operation
Auto changeover
Auto cleaning
Auto operation(artificial intelligence)
Auto restart operation
Child lock
Convenience Forced operation
Group control
Sleep mode
Timer(on/off)
Timer(weekly)
Two thermistor control
Standard wired remote controller
Wide Character wired remote controller
Picto wired remote controller
Individual Deluxe wired remote controller
control Simple wired remote controller
Wired remote controller(for hotel use)
Wireless remote controller(simple)
Wireless LCD remote control
Special Zone control
function kit CTIE
Electro thermostat
1
-
-
-
-
3/3/3
-
-
-
-
X
X
O
O
O
X
-
O
O
O
O(only heat recovery)
X
O(only heat pump or cooling only)
O
O
-
O
X
O
O
O
Accessory
Accessory
Accessory
Accessory
Accessory
X
Accessory
Accessory
-
-
Function
Category
ARNU07GB3G4+PBSGB30(Acc'y), PBSC30(Acc'y)
ARNU09GB3G4+PBSGB30(Acc'y), PBSC30(Acc'y)
ARNU12GB3G4+PBSGB30(Acc'y), PBSC30(Acc'y)
ARNU15GB3G4+PBSGB30(Acc'y), PBSC30(Acc'y)
ARNU18GB4G4+PBSGB40(Acc'y), PBSC40(Acc'y)
ARNU24GB4G4+PBSGB40(Acc'y), PBSC40(Acc'y)
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.

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Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
3. Piping Diagrams
Heat Exchanger
Sirocco Fan
Th3 Th2
Th1
lndoor unit
EEV :Heating
:Cooling
Filter
Filter
Refrigerant pipe connection port diameter
[Unit : mm(inch)]
CHASSIS MODEL GAS
B3
ARNU073B3G4+PBSGB30(Acc'y), PBSC30(Acc'y) Ø12.7(1/2)
ARNU093B3G4+PBSGB30(Acc'y), PBSC30(Acc'y) Ø12.7(1/2)
ARNU123B3G4+PBSGB30(Acc'y), PBSC30(Acc'y) Ø12.7(1/2)
ARNU153B3G4+PBSGB30(Acc'y), PBSC30(Acc'y) Ø12.7(1/2)
B4 ARNU183B4G4+PBSGB40(Acc'y), PBSC40(Acc'y) Ø12.7(1/2)
ARNU243B4G4+PBSGB40(Acc'y), PBSC40(Acc'y) Ø15.88(5/8)
LOC. Description PCB Connector (Color)
Th1 Thermistor for room air temperature CN-ROOM (Yellow)
Th2 Thermistor for pipe in temperature CN-PIPE/IN (White)
Th3 Thermistor for pipe out temperature CN-PIPE/OUT (Red)

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Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
4. Wiring Diagrams
CN_OPTION
CN_DISPLAY
CN_PTC
CN_485
CN_HUMID
CN_LEAK
CN_FLOAT
CN_PIPE_OUT
CN_WFCN_AIRC
CN_ROOM
CN_VMCN_REMO
CN_D_PUMPCN_POWER CN_PIPE_IN
CN_CC
CN_MOTOR1
CN_MOTOR2
CN_DAMPER
CN_DDC
CN_ZONE
CN_EXT CN_EEV
B3/B4 Chassis

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Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
5. DIP Switch Setting
For Multi V Models, DIP switch 1, 2, 6, 8 must be set OFF.
Function Description Setting Off Setting On Default
SW1
SW2
SW3
SW4
SW5
SW6
SW7
SW8
Communication
Cycle
Group Control
Dry Contact Mode
Installation
Heater linkage
Ventilator linkage
Vane selection
(Console)
Region selection
Etc.
N/A (Default)
N/A (Default)
Selection of Master or Slave
Selection of Dry Contact
Mode
Fan continuous operation
N/A
Selection of Ventilator link-
age
Selection of up/down side
Vane
Selection tropical region
Spare
-
-
Master
Wired/Wireless remote
controller
Selection of Manual or Auto
operation Mode
Continuous operation Removall
-
Linkage Removal
Up side + Down side Vane
General model
-
-
-
Slave
Auto
-
-
Working
Up side Vane
Only
Tropical model
-
Off
Off
Off
Off
Off
Off
Off
Off
1. Indoor Unit
2. Outdoor Unit
In case that the products meet specific conditions, “Auto addressing” function can start automatically with the
improved speed by turning the DIP switch #3 of the outdoor unit and resetting the power.
* Specific conditions:
- All names of the indoor units are ARNU****4.
- The serial number of Multi V super IV (outdoor units) is after October 2013.
Outdoor Unit PCB Outdoor Unit DIP Switch
DIP switch 7 segment

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Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
359012A
336600B
359012B
346810B
346810A
131400
336600A
158591
137210
352150A
330871
W4811A
130911
W4811B
55211G
263230B
263230C
354210
Eva-in
Eva-out
263230A
268711A
W6640A
268711D
249951
268711C
Inlet-air
349610
W51620B
W51620A
352118
552209
147901
W6640B
W1JK
135510
W50010
352150B
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 GCGS.
(GCGS Website http://biz.Lgservice.com)
6. Exploded View
B3 Chassis
SVC No. Description Remark (Color)
263230A Thermistor for room air temperature CN-ROOM (Yellow)
263230B Thermistor for pipe in temperature CN-PIPE_IN (White)
263230C Thermistor for pipe in temperature CN-PIPE_OUT (Red)
268711A PCB for main 210 mm X 95 mm
268711C PCB for option 25 mm X 25 m
268711D PCB for communication 65 mm X 45 mm

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Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
SVC No. Description Remark (Color)
263230A Thermistor for room air temperature CN-ROOM (Yellow)
263230B Thermistor for pipe in temperature CN-PIPE_IN (White)
263230C Thermistor for pipe in temperature CN-PIPE_OUT (Red)
268711A PCB for main 210 mm X 95 mm
268711C PCB for option 25 mm X 25 m
268711D PCB for communication 65 mm X 45 mm
268711D
W4811A
W4811B
336600A
359012A
263230B
131400
263230A
263230C
158591
330871
137210
359012B
352150A
268711A
249951
268711C
135510
55211G
336600B
346810
354210
Eva-in
Eva-out
THERMISTOR 1
130911
349610
147901
W51620B
W51620A
W4811C
352118
552209
W6640A
W6640B
W1JK
W50010
352150B
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 GCGS.
(GCGS Website http://biz.Lgservice.com)
B4 Chassis

- 10 -
Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Error Indicator
• This function indicates types of failure in self-diagnosis and occurrence of failure for air condition.
• Error mark is displayed on display window of indoor units and wired remote controller, and 7-segment LED of
outdoor unit control board as shown in the table.
• If more than two troubles occur simultaneously, lower number of error code is first displayed.
• After error occurrence, if error is released, error LED is also released simultaneously.
Error Display
- 1st,2nd,3rd LED of 7-segment indicates error number, 4th LED indicates unit number. Indicates unit number.
(* = 1:Master, 2 : Slave 1, 3 : Slave 2)
Ex) 211 : No.21 error of master unit
213 : No.21 error of slave2
1051 : No.105 error of master unit
hRefer to the DX-Venitilation manual for DX-Venitilation error code
(repetition)
Error Compressor
Error number
Unit(1:Master, 2:Slave 1, 3:Slave 2)
Display Title Cause of Error
Indoor unit related error
0 1 - Air temperature sensor of indoor unit Air temperature sensor of indoor unit is open or short
0 2 - Inlet pipe temperature sensor of indoor unit Inlet pipe temperature sensor of indoor unit is open or short
0 3 - Communication error : wired remote controller
↔indoor unit Failing to receive wired remote controller signal in indoor unit PCB
0 4 - Drain pump Malfunction of drain pump
0 5 - Communication error : Indoor communication
PCB ↔indoor unit
Indoor Unit PCB did not receive signal from Indoor
communication PCB for over 3 minutes continuously
0 6 - Outlet pipe temperature sensor of indoor unit Outlet pipe temperature sensor of indoor unit is open or short
0 9 - Indoor EEPROM Error In case when the serial number marked on EEPROM of
Indoor unit is 0 or FFFFFF
1 0 - Poor fan motor operation Disconnecting the fan motor connector / Failure of indoor
fan motor lock
2 3 0 Refrigerant leakage sensing error Refrigerant leakage sensing error and sensor defect error
2 3 7 Communication defect in indoor communication
PCB ↔outdoor communication PCB
Indoor communication PCB did not receive signal from outdoor
communication PCB for over 3 minutes continuously
2 3 8 Communication error in outdoor communication
PCB ↔outdoor unit
Outdoor communication PCB did not receive communication sig-
nal from outdoor unit for over 3 minutes continuously
7. Self-diagnosis function

P/NO : MFL42947632 JUNE, 2014