LG ATNH126ELFB Service Manual page 74

Self-diagnosis Function
I 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
00 No Error
01 Indoor Room Thermistor Error
02 Indoor In-Piping Error
03 Remote controller Error
04 Drain Pump Error
05 Communication Error between In and Out
06 Indoor Out-Piping Error
Outdoor Error
Error Code
21 DC Peak(IPM Fault)
22 CT2(Max CT)
23 DC Link Low Volt
24 High/Low Pressure/Heatsink Switch
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-Pipe Thermistor Error(Open/Short)
44 Outdoor Air Thermistor Error(Open/Short)
45 Cond Pipe Thermistor Error(Open/Short)
46 Suction Pipe Thermistor Error(Open/Short)
47 Const. D-Pipe Thermistor Error(Open/Short)
51 Capcity Error(High/Low)
53 Signal Error(Indoor_Outdoor)
54 Phase Error
60 EEPROM Check Sum Error
61 Cond Pipe High
62 Heatsink High
63 Cond Pipe Low
65 Heatsink Thermistor Error(Open/Short)
Description
MPS MPS
Variable Inverter
MPS MPS
Variable Inverter
2 times
2 times
2 times
2 times
2 times
2 times
2 times
2 times
3 times
3 times
4 times
4 times
4 times
4 times
4 times
4 times
5 times
5 times
5 times
6 times
6 times
6 times
6 times
6 times
Troubleshooting Guide
LED 1 LED 2
(Red) (Green)
1 time
2 times
3 times
4 times
5 times
6 times
LED 1 LED 2
(Red) (Green)
1 time
2 times
3 times
4 times
5 times
6 times
7 times
8 times
2 times
3 times
1 times
4 times
5 times
6 times
7 times
1 times
3 times
4 times
1 times
2 times
3 times
5 times
Service Manual 119
Indoor
Status
ON
OFF
OFF
OFF
OFF
OFF
OFF
Indoor
Status
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF