LGRED Heat General Service Manual

Part 5. Trouble Shooting
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Copyright ©2017 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1.2 Error Indicator (Outdoor)
Outdoor Error
Ex) Error 21 (DC Peack)
1 Time 1 Time 1 Time
2 Times2 Times2 Times
1 Sec.
2 Sec. 2 Sec.
1 Sec. 1 Sec.
LED01G
(RED)
LED02G
(GREEN)
◑ :
A light on the display panel is blink.
Error
Code
Contents
LED01G/M
(Red)
LED02G/M
(Green)
case of Error
Outdoor
Status
21 DC Link Peak (IPM Fault)
2times ◑ 1times ◑
Over Rated Current Off
22 CT 2 (Max CT)
2times ◑ 2times ◑
Input Over Current Off
23
DC Link Low Volt.
2times ◑ 3times ◑
DC Link Volt is below 140Vdc
Off
DC Link High Volt.
DC Link Volt is above 420Vdc
25 Low Voltage/Over Voltage
2times ◑ 5times ◑
Abnormal AC Volt Input Off
26 DC Compressor Position Error
2times ◑ 6times ◑
Compressor Starting Fall Error Off
27 PSC/PFC Fault Error
2times ◑ 7times ◑
Over Inverter PCB input current Off
29 COMP Over Current
2times ◑ 9times ◑
Over Inverter Compressor Current Off
32 D-Pipe High
3times ◑ 2times ◑
D-Pipe Temp. High Off
35 Low Pressure Error
3times ◑ 5times ◑
Excessive decrease of Low Pressure Off
39 Communication Error
3times ◑ 9times ◑
Communication Error Between PFC
Micom and INV Micom
Off
40 CT Sensor (Open/Short)
4times ◑
○
CT Circuit Malfunction Off
41 INV. D-Pipe Th Error
4times ◑ 1times ◑
Open/Short Off
43 High Pressure Sensor Error
4times ◑ 3times ◑
Open/Short Off
44 Outdoor Air Th Error
4times ◑ 4times ◑
Open/Short Off
45 Cond. Mid-Pipe Th Error
4times ◑ 5times ◑
Open/Short Off
46 Suction Pipe Th Error
4times ◑ 6times ◑
Open/Short Off
48 Cond. Out-Pipe Th Error
4times ◑ 8times ◑
Open/Short Off
51 Capacity Over
5times ◑ 1times ◑
Over combination Off
53 Signal Error (Indoor <-> Outdoor)
5times ◑ 3times ◑
Communication Poorly Off
54 3-Phase Wrong wiring
5times ◑ 4times ◑
3-Phase Wrong Wring of Outdoor Unit
(Reverse Phase/Omission of Phase)
Off
60 EEPROM Check Sum Error
6times ◑
○
Check Sum Mismatching Off
61 Cond. Pipe Th High
6times ◑ 1times ◑
Cond. Temp. High Off
62 Heaksink Th High
6times ◑ 2times ◑
Heatsink Temp. High Off
65 Heaksink Th Error
6times ◑ 5times ◑
Open/Short Off
67 Outdoor BLDC Fan Lock
6times ◑ 7times ◑
Outdoor Fan is not operation Off
73 PFC Fault Error(S/W)
7times ◑ 3times ◑
Over Current of Outdoor Unit PFC Off