Troubleshooting Guide

Self-diagnosis Function

Error Indicator

The function is to self-diagnoisis airconditioner and express the troubles identifically if there is any trouble.

Error mark is ON/OFF for the operation LED of evaporator body in the same manner as the following table.

If more than two troubles occur simultaneously, primarily the highest trouble fo error code is expressed.

After error occurrence, if error is released, error LED is also released simultaneously.

To operate again on the occurrence of error code, be sure to turn off the power and then turn on.

Having or not of error code is different from Model.

Indoor Error

Error code

Description

MPS

MPS

LED 1

LED 2

Indoor

Variable

Inverter

(Red)

(Green)

Status

 

 

 

 

 

 

 

 

 

00

No Error

 

 

 

 

ON

 

 

 

 

 

 

 

01

Indoor Room Thermistor Error

 

 

 

1 time

OFF

 

 

 

 

 

 

 

02

Indoor In-Piping Error

 

 

 

2 times

OFF

 

 

 

 

 

 

 

03

Remote controller Error

 

 

 

3 times

OFF

 

 

 

 

 

 

 

04

Drain Pump Error

 

 

 

4 times

OFF

 

 

 

 

 

 

 

05

Communication Error between In and Out

 

 

 

5 times

OFF

 

 

 

 

 

 

 

06

Indoor Out-Piping Error

 

 

 

6 times

OFF

 

 

 

 

 

 

 

Outdoor Error

Error Code

Description

MPS

MPS

LED 1

LED 2

Indoor

Variable

Inverter

(Red)

(Green)

Status

 

 

 

 

 

 

 

 

 

21

DC Peak(IPM Fault)

 

 

2 times

1 time

ON

 

 

 

 

 

 

 

22

CT2(Max CT)

 

 

2 times

2 times

OFF

 

 

 

 

 

 

 

23

DC Link Low Volt

 

 

2 times

3 times

OFF

 

 

 

 

 

 

 

24

High/Low Pressure/Heatsink Switch

 

 

2 times

4 times

OFF

 

 

 

 

 

 

 

25

Low Voltage / Over Voltage

 

 

2 times

5 times

OFF

 

 

 

 

 

 

 

26

DC COMP Position Error

 

 

2 times

6 times

OFF

 

 

 

 

 

 

 

27

PSC Fault Error

 

 

2 times

7 times

OFF

 

 

 

 

 

 

 

28

DC Link High Volt

 

 

2 times

8 times

OFF

 

 

 

 

 

 

 

32

D-Pipe High(INV)

 

 

3 times

2 times

OFF

 

 

 

 

 

 

 

33

D-Pipe High(Normal)

 

 

3 times

3 times

OFF

 

 

 

 

 

 

 

40

CT Sensor(open/short)

 

 

4 times

 

OFF

 

 

 

 

 

 

 

41

INV. D-Pipe Thermistor Error(Open/Short)

 

 

4 times

1 times

OFF

 

 

 

 

 

 

 

44

Outdoor Air Thermistor Error(Open/Short)

 

 

4 times

4 times

OFF

 

 

 

 

 

 

 

45

Cond Pipe Thermistor Error(Open/Short)

 

 

4 times

5 times

OFF

 

 

 

 

 

 

 

46

Suction Pipe Thermistor Error(Open/Short)

 

 

4 times

6 times

OFF

 

 

 

 

 

 

 

47

Const. D-Pipe Thermistor Error(Open/Short)

 

 

4 times

7 times

OFF

 

 

 

 

 

 

 

51

Capcity Error(High/Low)

 

 

5 times

1 times

OFF

 

 

 

 

 

 

 

53

Signal Error(Indoor_Outdoor)

 

 

5 times

3 times

OFF

 

 

 

 

 

 

 

54

Phase Error

 

 

5 times

4 times

OFF

 

 

 

 

 

 

 

60

EEPROM Check Sum Error

 

 

6 times

 

OFF

 

 

 

 

 

 

 

61

Cond Pipe High

 

 

6 times

1 times

OFF

 

 

 

 

 

 

 

62

Heatsink High

 

 

6 times

2 times

OFF

 

 

 

 

 

 

 

63

Cond Pipe Low

 

 

6 times

3 times

OFF

 

 

 

 

 

 

 

65

Heatsink Thermistor Error(Open/Short)

 

 

6 times

5 times

OFF

 

 

 

 

 

 

 

38Ceiling Cassette Air Conditioner

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LG Electronics LCN240CP service manual Self-diagnosis Function, Indoor Error, Outdoor Error, Error Indicator

LCN240CP specifications

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