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Self-diagnosis function, Indoor error, Outdoor error – LG LCN240CP User Manual

Page 38

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38 Ceiling Cassette Air Conditioner

Troubleshooting Guide

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.

Self-diagnosis Function

Indoor Error

Error code

Description

MPS

Variable

MPS

Inverter

LED 1

(Red)

LED 2

(Green)

Indoor
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

Variable

MPS

Inverter

LED 1

(Red)

LED 2

(Green)

Indoor
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