LG Universal System Air Conditioner Service Manual page 88

Troubleshooting Guide
I Error Indicator (Outdoor)
Outdoor Error
Ex) Error 21 (DC Peack)
LED01G 2 Times
(RED)
1 sec
1 Times
LED02G
(GREEN)
Error
Descriotion
code
21 DC Peak (IPM Fault)
22 CT 2(Max CT)
23 DC Link Low Volt.
24 L/H press SW
25 Low voltage / Over voltage
- -
65 Heatsink Th Error (Open/Short)
67 Outdoor BLDC Fan Lock
105 Comm. Error
(Main board <->Fan board)
Outdoor Error
Ex) Error 26(DC Comp position Error)
LED03G 2 Times
(Yellow)
1 sec
Error
Descriotion
code
21 DC PEAK (IPM Fault)
DC Comp position Error
26
(No Position / Locking) Error
Comm. Error
52
(Main micon <-> Sub micom)
23
DC Link Low voltage Error
40
CT Sensor Open/Short Error
60
A/D Option Error
29 Comp over current Error
88 Universal System Air Conditioner
2 Times
1 sec
1Times
2 sec 2 sec
2 times
2 times
2 times
2 times
2 times
-
6 times
6 times
10 times
2 Times
1 sec
1 times
2 times
3 times
5 times
6 times
7 times
8 times
2 Times
1 sec
1Times
LED02G
LED01G
(Green)
(Red)
1 time
2 times
3 times
4 times
5 times
-
5 times
7 times
5 times
2 Times
Error Display
LED03G
(Yellow)
Indoor
Status
Off
Off
Off
Off
Off
-
Off
Off
Off
Time
25 sec
25 sec
25 sec
25 sec
-
-
25 sec