Multi F Four-Way Ceiling Cassette Service Manual

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Copyright ©2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Part 5. Trouble Shooting
1.3 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