Self-Diagnosis Function - LG LMNH122LRA0 Service Manual

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
00 No Error
01 Indoor Room themistor error
02 Indoor in-piping sensor error
03 Remote controller error
04 Drain Pump error
05 Communcation error between in and out
06 Indoor Out-Piping sensor error
07 Differnt mode operation
Outdoor Error
Error Code
21 DC Peak (IPM Fault)
22 CT 2(Max CT)
23 DC Link Low Volt.
24 L_P/Heater Sink
25 Low voltage / Over voltage
26 DC Comp Position Error
27 PSC Fault Error
28 DC Link High Volt
32 D-Pipe High (INV)
33 D-Pipe High (Normal)
40 CT Sensor (Open/Short)
41 INV. D-PipeTh Error(Open/Short)
44 Outdoor air Th Error(Open/Short)
45 Cond. Pipe Th Error(Open/Short)
46 Suction Pipe Error(Open/Short)
47 Const D-pipe Th Error(Open/Short)
51 Capacity over
53 Signal error (Indoor
60 EEPROM Check Sum Error
61 Cond. Pipe High
62 Heatsink High
63 Cond. Pipe Low
65 Heatsoml Th error (Open/Short)
104 Multi type Air Conditioner
Description
Description
Outdoor)
MPS LED 1
Variable (Red)
MPS LED 1
Variable (Red)
2times
2times
2times
2times
2times
2times
2times
2times
3times
3times
4times
4times
4times
4times
4times
4times
5times
5times
6times
6times
6times
6times
6times
LED 2 Indoor
(Green) Status
ON
1time OFF
2times OFF
3times OFF
4times OFF
5times OFF
6times OFF
7times OFF
LED 2 Indoor
(Green) Status
1time OFF
2times OFF
3times OFF
4times OFF
5times OFF
6times OFF
7times OFF
8times OFF
2times OFF
3times OFF
O OFF
1time OFF
4times OFF
5times OFF
6times OFF
7times OFF
1time OFF
3times OFF
O OFF
1time OFF
2times OFF
3times OFF
5times OFF