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LG ARNU07GCEA4 Svc Manual

ARNU07GCEU4\ ARNU09GCEA4\ ARNU09GCEU4\ ARNU12GCEA4\ ARNU12GCEU4\ ARNU15GCEA4\ ARNU15GCEU4\ ARNU18GCFA4\ ARNU18GCFU4\ ARNU24GCFU4\ ARNU24GCFA4

Made by: LG
Type: Svc Manual
Category: Air Conditioner
Pages: 15
Size: 3.13 MB

 

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Multi V Air Conditioner

MODEL : 

CAUTION

Before Servicing the unit, read the safety precautions in General SVC manual.
Only for authorized service personnel.

SVC MANUAL(Exploded View)

Internal Use Only

http://biz.lgservice.com

ARNU07GCEA4   ARNU07GCEU4 
ARNU09GCEA4   ARNU09GCEU4 
ARNU12GCEA4   ARNU12GCEU4 
ARNU15GCEA4   ARNU15GCEU4 
ARNU18GCFA4   ARNU18GCFU4 
ARNU24GCFA4   ARNU24GCFU4 


background image

- 2 -

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 prior notification
4. To be added for more available Models
5. EEV : Electronic Expansion Valve

Conversion Formula

kcal/h= kW x 860
Btu/h = kW x 3412
cfm = m

3

/min x 35.3

l/s = CMM x 1000/60 

Type 

Floor Standing 

Model 

Unit 

ARNU07GCEA4  

ARNU09GCEA4 ARNU12GCEA4 

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 

1,067 x 635 x 203  

1,067 x 635 x 203  

1,067 x 635 x 203  

inch 

42 x 25 x 8  

42 x 25 x 8  

42 x 25 x 8  

Coil 

Rows x Columns x FPI 

2 x 12 x 19  

2 x 12 x 19  

2 x 12 x 19  

Face Area 

m

3

0.16

0.16

0.16

Fan Type 

Sirocco Fan  

Sirocco Fan  

Sirocco Fan  

Motor Output x Number 

19 x 1, 5 x 1

19 x 1, 5 x 1

19 x 1, 5 x 1

Running Current 

0.76

0.76

0.76

Air Flow Rate(H / M / L) 

CMM 

8.5 / 7.5 / 6.5  

9.5 / 8.5 / 7.5  

10.5 / 9.5 / 8.5  

cfm

300 / 265 / 229  

335 / 300 / 265  

371 / 335 / 300  

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 

Resin Net(washable)   Resin Net(washable)   Resin Net(washable)  

Safety Device 

Fuse  

Fuse  

Fuse  

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) 

12(15/32)  

12(15/32)  

12(15/32)  

Net Weight  

kg(lbs)  

27(59.5)  

27(59.5)  

27(59.5)  

Noise Level(Sound Press, 1m, H / M / L)  

dB(A)+1

35 / 33 / 31  

36 / 34 / 32  

37 / 35 / 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  

mm

2

CV1.5 x 3C  

CV1.5 x 3C  

CV1.5 x 3C  

Transmission Cable(AWG#-C) 

mm

2

CVV-SB 1.0-1.5 x 2C   CVV-SB 1.0-1.5 x 2C   CVV-SB 1.0-1.5 x 2C  


background image

- 3 -

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 prior notification
4. To be added for more available Models
5. EEV : Electronic Expansion Valve

Conversion Formula

kcal/h= kW x 860
Btu/h = kW x 3412
cfm = m

3

/min x 35.3

l/s = CMM x 1000/60 

Type 

Floor Standing 

Model 

Unit 

ARNU15GCEA4

ARNU18GCFA4 ARNU24GCFA4 

 

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 

1,067 x 635 x 203  

1,345 x 635 x 203  

1,345 x 635 x 203  

inch 

42 x 25 x 8  

52-15/16 x 25 x 8  

52-15/16 x 25 x 8  

Coil 

Rows x Columns x FPI 

2 x 12 x 19  

3 x 11 x 19  

3 x 11 x 19  

Face Area 

m

3

0.16

0.23

0.23

Fan Type 

Sirocco Fan  

Sirocco Fan  

Sirocco Fan  

Motor Output x Number 

19 x 1, 5 x 1

19 x 2

19 x 2

Running Current 

0.76

0.97

0.97

Air Flow Rate(H / M / L) 

CMM 

11.5 / 10.0 / 9.5  

16.0 / 14.0 / 12.0  

18.0 / 16.0 / 14.0  

cfm

406 / 353 / 335  

565 / 494 / 424  

635 / 565 / 494  

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 

Resin Net(washable)   Resin Net(washable)   Resin Net(washable)  

Safety Device 

Fuse  

Fuse  

Fuse  

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) 

12(15/32)  

12(15/32)  

12(15/32)  

Net Weight  

kg(lbs)  

27(59.5)  

34(75.0)  

34(75.0)  

Noise Level(Sound Press, 1m, H / M / L)  

dB(A)+1

38 / 37 / 35  

40 / 37 / 34  

43 / 40 / 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  

mm

2

CV1.5 x 3C  

CV1.5 x 3C  

CV1.5 x 3C  

Transmission Cable(AWG#-C) 

mm

2

CVV-SB 1.0-1.5 x 2C   CVV-SB 1.0-1.5 x 2C   CVV-SB 1.0-1.5 x 2C  


background image

- 4 -

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 prior notification
4. To be added for more available Models
5. EEV : Electronic Expansion Valve

Conversion Formula

kcal/h= kW x 860
Btu/h = kW x 3412
cfm = m

3

/min x 35.3

l/s = CMM x 1000/60 

Type 

Floor Standing 

Model 

Unit 

ARNU07GCEU4

ARNU09GCEU4

ARNU12GCEU4

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 

978 x 639 x 190  

978 x 639 x 190  

978 x 639 x 190  

inch 

38-1/2 x 25-5/32 x 7-15/32   38-1/2 x 25-5/32 x 7-15/32   38-1/2 x 25-5/32 x 7-15/32  

Coil 

Rows x Columns x FPI 

2 x 12 x 19  

2 x 12 x 19  

2 x 12 x 19  

Face Area 

m

3

0.16

0.16

0.16

Fan Type 

Sirocco Fan  

Sirocco Fan  

Sirocco Fan  

Motor Output x Number 

19 x 1, 5 x 1

19 x 1, 5 x 1

19 x 1, 5 x 1

Running Current 

0.76

0.76

0.76

Air Flow Rate(H / M / L) 

CMM 

8.5 / 7.5 / 6.5  

9.5 / 8.5 / 7.5  

10.5 / 9.5 / 8.5  

cfm

300 / 265 / 229  

335 / 300 / 265  

371 / 335 / 300  

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 

Resin Net(washable)   Resin Net(washable)   Resin Net(washable)  

Safety Device 

Fuse  

Fuse  

Fuse  

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) 

12(15/32)  

12(15/32)  

12(15/32)  

Net Weight  

kg(lbs)  

21(46.3)

21(46.3)

21(46.3)

Noise Level(Sound Press, 1m, H / M / L)  

dB(A)+1

35 / 33 / 31  

36 / 34 / 32  

37 / 35 / 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  

mm

2

CV1.5 x 3C  

CV1.5 x 3C  

CV1.5 x 3C  

Transmission Cable(AWG#-C) 

mm

2

CVV-SB 1.0-1.5 x 2C   CVV-SB 1.0-1.5 x 2C   CVV-SB 1.0-1.5 x 2C  


background image

- 5 -

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 prior notification
4. To be added for more available Models
5. EEV : Electronic Expansion Valve

Conversion Formula

kcal/h= kW x 860
Btu/h = kW x 3412
cfm = m

3

/min x 35.3

l/s = CMM x 1000/60 

Type 

Floor Standing 

Model 

Unit 

ARNU15GCEU4

ARNU18GCFU4

ARNU24GCFU4

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 

978 x 639 x 190  

1,256 x 639 x 190  

1,256 x 639 x 190  

inch 

38-1/2 x 25-5/32 x 7-15/32   49-7/16 x 25-5/32 x 7-15/32  49-7/16 x 25-5/32 x 7-15/32  

Coil 

Rows x Columns x FPI 

2 x 12 x 19  

3 x 11 x 19  

3 x 11 x 19  

Face Area 

m

3

0.16

0.23

0.23

Fan Type 

Sirocco Fan  

Sirocco Fan  

Sirocco Fan  

Motor Output x Number 

19 x 1, 5 x 1

19 x 2

19 x 2

Running Current 

0.76

0.97

0.97

Air Flow Rate(H / M / L) 

CMM 

11.5 / 10.0 / 9.5  

16.0 / 14.0 / 12.0  

18.0 / 16.0 / 14.0  

cfm

406 / 353 / 335  

565 / 494 / 424  

635 / 565 / 494  

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 

Resin Net(washable)   Resin Net(washable)   Resin Net(washable)  

Safety Device 

Fuse  

Fuse  

Fuse  

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) 

12(15/32)  

12(15/32)  

12(15/32)  

Net Weight  

kg(lbs)  

21(46.3)

26.5(58.4)  

26.5(58.4)  

Noise Level(Sound Press, 1m, H / M / L)  

dB(A)+1

38 / 37 / 35  

40 / 37 / 34  

43 / 40 / 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  

mm

2

CV1.5 x 3C  

CV1.5 x 3C  

CV1.5 x 3C  

Transmission Cable(AWG#-C) 

mm

2

CVV-SB 1.0-1.5 x 2C   CVV-SB 1.0-1.5 x 2C   CVV-SB 1.0-1.5 x 2C  


background image

- 6 -

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

X

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

-
-
-

Function

Category

ARNU07GCEA4, ARNU07GCEU4 
ARNU09GCEA4, ARNU09GCEU4 
ARNU12GCEA4, ARNU12GCEU4 
ARNU15GCEA4, ARNU15GCEU4 

ARNU18GCFA4, ARNU18GCFU4 
ARNU24GCFA4, ARNU24GCFU4 

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.


background image

- 7 -

Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

3. Piping Diagrams

Heat Exchanger

Sirroco Fan

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) 

CHASSIS

MODEL

GAS

LIQUID

CE

ARNU07GCEA4

ARNU07GCEU4

Ø12.7(1/2)

Ø6.35(1/4)

ARNU09GCEA4

ARNU09GCEU4

Ø12.7(1/2)

Ø6.35(1/4)

ARNU12GCEA4

ARNU12GCEU4

Ø12.7(1/2)

Ø6.35(1/4)

ARNU15GCEA4

ARNU15GCEU4

Ø12.7(1/2)

Ø6.35(1/4)

CF

ARNU18GCFA4

ARNU18GCFU4

Ø12.7(1/2)

Ø6.35(1/4)

ARNU24GCFA4

ARNU24GCFU4

Ø15.88(5/8)

Ø9.52(3/8)


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- 8 -

Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

4. Wiring Diagrams

CN_MOTOR1

CN_MOTOR2

CN_DAMPER

CN_DDC

CN_ZONE

CN_EXT CN_EEV

CN_OPTION

CN_DISPLAY

CN_PTC

CN_485

CN_HUMID

CN_CC

CN_FLOAT

CN_WF

CN_PIPE_OUT

CN_POWER

CN_D_PUMP

CN_REMO

CN_VM

CN_ROOM

CN_PIPE_IN

CN_AIRC

CN_LEAK

CE/CF Chassis


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- 9 -

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.

DIP switch    7 segment

Outdoor Unit PCB

Outdoor Unit DIP Switch


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- 10 -

Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

6. Exploded View

CE (WITH CASE)

135500

W3110

135304

137213A

135304

135500

W3110

749740

268711C

137213B

359012B

359012A

336600B

336600A

346810B

346810A

147780

135511

159830

147780

137211

159830

330871

552570

237204

W6640A

268711A

55211G

W52240

552209

749750

263230A

263230B

263230C

W6631A

W6631B

W6631C

W6631D

354210

352118

THERMISTOR 1

THERMISTOR 2

THERMISTOR 3

249951

130911

W50011

268711D

W6640B

237204

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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- 11 -

Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

CE (WITHOUT CASE)

268711C

359012B

359012A

336600B

336600A

346810B

346810A

W4811

135511

159830

137211

159830

330871

W6640A

268711A

55211G

W52240

552209

263230A

263230B

263230C

W6631A

W6631B

W6631C

W6631D

354210

130911

352118

THERMISTOR 1

THERMISTOR 2

THERMISTOR 3

249951

W50011

552570

268711D

W6640B

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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- 12 -

Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

CF (WITH CASE)

135500

137213A

W3110

749740

749750

135304

135500

W3110

352118

237204

W50011

137211B

147780

147780

354210

330871

346810

359012A

55211G

137213B

237204

249951

159830

359012B

336600A

336600B

W6640B

W6640A

346810

130911

268711A

268711C

W6631A

W6631B

W6631C

W6631D

263230A

263230B

263230C

THERMISTOR 1

THERMISTOR 2

THERMISTOR 3

552209

W52240

135511

268711D

552570

137211A

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


background image

- 13 -

Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

CF (WITHOUT CASE)

352118

W50011

354210

330871

346810

359012A

55211G

249951

159830

359012B

336600A

336600B

W6640B

W6640A

346810

130911

268711A

268711C

W6631A

W6631B

W6631C

W6631D

263230A

263230B

263230C

THERMISTOR 1

THERMISTOR 2

THERMISTOR 3

552209

W52240

137211

135511

268711D

552570

W4811

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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- 14 -

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

h

Refer 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


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P/NO : MFL42947637

DECEMBER, 2014