LG Multi V Series User manual

Multi V Air Conditioner
SVC MANUAL(Exploded View)
MODEL : ARNU09GTL*4
ARNU12GTL*4
ARNU18GTL*4
ARNU24GTL*4
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 ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
1. Specification
Type
Model Unit
kW
Cooling Capacity kcal/h
Btu/h
kW
Heating Capacity kcal/h
Btu/h
Casing
Body mm
Dimensions (WxDxH)
inch
Front Panel mm
inch
Coil
Rows x Columns x FPI
Face Area m2(ft2)
Type
Motor Output x Number W
Running Current A
Fan Air Flow Rate(H/M/L) CMM
cfm
Drive
Motor type
Temperature Control
Sound Absorbing Thermal Insulation Material
Safety Device
Liquid Side mm(inch)
Pipe Connections Gas Side mm(inch)
Drain Pipe(Internal Dia.) mm(inch)
Net Weight Body kg(lbs)
Noise Level (Sound Press, 1.5m, H/M/L) dB(A)
Power Supply Ø, V, Hz
Refrigerant Control
Power cable
Transmission cable
Panel Color
Panel Name(Acc'y)
ARNU09GTL*4
2.8
2,400
9,600
3.2
2,800
10,900
Galvanized Steel Plate
830x550x225
32-11/16 x 21-21/32 x 8-27/32
1,050x640x28.5
41-11/32 x 25-3/16 x 1-3/32
2x11x20
0.13(1.4)
Cross Flow Fan
20x2
0.18x2
9 / 8 / 7
318 / 283 / 247
Direct
BLDC
Microprocessor, Thermostat for cooling and heating
Foamed polystrene
Fuse
Ø6.35(1/4)
Ø12.7(1/2)
25.0(1)
20.6(45.4)
36 / 34 / 32
1,220-240,50
EEV
CV 1.5 x 3C**
CVV-SB 1.0 ~ 1.5 × 2C
Morning fog
PT-HL*
ARNU12GTL*4
3.6
3,100
12,300
4.0
3,400
13,600
Galvanized Steel Plate
830x550x225
32-11/16 x 21-21/32 x 8-27/32
1,050x640x28.5
41-11/32 x 25-3/16 x 1-3/32
2x11x20
0.13(1.4)
Cross Flow Fan
20x2
0.18x2
10 / 9 / 8
353 / 318 / 283
Direct
BLDC
Microprocessor, Thermostat for cooling and heating
Foamed polystrene
Fuse
Ø6.35(1/4)
Ø12.7(1/2)
25.0(1)
20.6(45.4)
38 / 36 / 32
1,220-240,50
EEV
CV 1.5 x 3C**
CVV-SB 1.0 ~ 1.5 × 2C
Morning fog
PT-HL*
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 prior notification
4. To be added for more available Models
5. EEV : Electronic Expansion Valve
* Model Name
A:Basic, C:Plasma
Conversion Formula
kcal/h= kW x 860
Btu/h = kW x 3412
cfm = m3/min x 35.3
l/s = CMM x 1000/60
2Way Ceiling Cassette
** : Wiring cable size must comply with the applicable local and national codes. And “Electric characteristics” chapter should be considered for
electrical work and design. Especially the power cable and circuit breaker should be selected in accordance with that

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Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Type
Model Unit
kW
Cooling Capacity kcal/h
Btu/h
kW
Heating Capacity kcal/h
Btu/h
Casing
Body mm
Dimensions (WxDxH)
inch
Front Panel mm
inch
Coil
Rows x Columns x FPI
Face Area m2(ft2)
Type
Motor Output x Number W
Running Current A
Fan Air Flow Rate(H/M/L) CMM
cfm
Drive
Motor type
Temperature Control
Sound Absorbing Thermal Insulation Material
Safety Device
Liquid Side mm(inch)
Pipe Connections Gas Side mm(inch)
Drain Pipe(Internal Dia.) mm(inch)
Net Weight Body kg(lbs)
Noise Level (Sound Press, 1.5m, H/M/L) dB(A)
Power Supply Ø, V, Hz
Refrigerant Control
Power cable
Transmission cable
Panel Color
Panel Name(Acc'y)
ARNU18GTL*4
5.6
4,800
19,100
6.3
5,400
21,500
Galvanized Steel Plate
830x550x225
32-11/16 x 21-21/32 x 8-27/32
1,050x640x28.5
41-11/32 x 25-3/16 x 1-3/32
2x11x20
0.13(1.4)
Cross Flow Fan
20x2
0.18x2
13/12/10
459/424/353
Direct
BLDC
Microprocessor, Thermostat for cooling and heating
Foamed polystrene
Fuse
Ø6.35(1/4)
Ø12.7(1/2)
25.0(1)
20.6(45.4)
40/35/30
1,220-240,50
EEV
CV 1.5 x 3C**
CVV-SB 1.0 ~ 1.5 × 2C
Morning fog
PT-HL*
ARNU24GTL*4
7.1
6,100
24,200
8.0
6,900
27,300
Galvanized Steel Plate
830x550x225
32-11/16 x 21-21/32 x 8-27/32
1,050x640x28.5
41-11/32 x 25-3/16 x 1-3/32
2x11x20
0.13(1.4)
Cross Flow Fan
20x2
0.18x2
17/15/13
601/530/459
Direct
BLDC
Microprocessor, Thermostat for cooling and heating
Foamed polystrene
Fuse
Ø9.52(3/8)
Ø15.88(5/8)
25.0(1)
20.6(45.4)
42/37/32
1,220-240,50
EEV
CV 1.5 x 3C**
CVV-SB 1.0 ~ 1.5 × 2C
Morning fog
PT-HL*
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 prior notification
4. To be added for more available Models
5. EEV : Electronic Expansion Valve
* Model Name
A:Basic, C:Plasma
Conversion Formula
kcal/h= kW x 860
Btu/h = kW x 3412
cfm = m3/min x 35.3
l/s = CMM x 1000/60
2Way Ceiling Cassette
** : Wiring cable size must comply with the applicable local and national codes. And “Electric characteristics” chapter should be considered for
electrical work and design. Especially the power cable and circuit breaker should be selected in accordance with that

2. List of Functions
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.
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
2
-
auto
-
O
4/5/4
X
O
O
O
X
Option
O
O
O
X
O
O
O
O
O(only heat recovery)
X
O(only heat pump or cooling only)
O
O
O
O
O
O
O
O
Accessory
Accessory
Accessory
Accessory
Accessory
X
Accessory
-
-
-
FunctionCategory
ARNU09GTL*4 ARNU12GTL*4
ARNU18GTL*4 ARNU24GTL*4
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Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only

- 5 -
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
3. Piping Diagrams
Heat Exchanger
C.F.F
lndoor unit
EEV :Heating
:Cooling
Filter
Filter
Th3 Th2
Th1
Refrigerant pipe connection port diameter
[unit: mm(inch)]
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)
Model Gas Liquid
ARNU09GTL*4
Ø12.7(1/2) Ø6.33(1/4)ARNU12GTL*4
ARNU18GTL*4
ARNU24GTL*4 Ø15.88(5/8) Ø9.52(3/8)

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Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
4. Wiring Diagrams
CN_OPTION
CN_DISPLAY
CN_EEV
CN_MOTOR2CN_MOTOR1 CN_FLOAT
CN_PIPE_OUT
CN_ROOM
CN_PIPE_IN
CN_LEAK
CN_POWER
CN_D/PUMP
CN_VANE1
CN_AIRC
CN_485 CN_REMO
CN_CC

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Copyright ©2009 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.
DIP switch 7 segment
Outdoor Unit PCB Outdoor Unit DIP Switch

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Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
5. Exploded View
330871
268711D
268711C
268711E
359011
158591
352150
W6640
352380
435513
135511
249951
W0FZZ
352116
354210B
354210A
55211G
342800
135500A
130911
W50010
346810
263230A
263230B
263230C
352150B
THERMISTOR 1
THERMISTOR 2
THERMISTOR 3
266090
TL (Standard model)
LOC. SVC No. Description PCB Connector (Color)
Th1 263230A Thermistor for room air temperature CN-ROOM (Yellow)
Th2 263230B Thermistor for pipe in temperature CN-PIPE_IN (White)
Th3 263230C Thermistor for pipe out temperature CN-PIPE_OUT (Red)

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Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
TL (Plasma model)
268711D
268711C
359011
158591
352150A
W6640
249951
W0FZZ
352116
354210B
354210A
55211G
342800
130911
W50010
346810
266090
159830
263230A
263230B
263230C
THERMISTOR 1
THERMISTOR 2
THERMISTOR 3
268711E
330871
435513
135511
352380
135500A
352150B
LOC. SVC No. Description PCB Connector (Color)
Th1 263230A Thermistor for room air temperature CN-ROOM (Yellow)
Th2 263230B Thermistor for pipe in temperature CN-PIPE_IN (White)
Th3 263230C Thermistor for pipe out temperature CN-PIPE_OUT (Red)

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Copyright ©2009 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 : MFL68506005 NOVEMBER, 2014