Multi F Multi-Zone Systems Service Manual

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Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
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)
Error
Contents
LED01G/M LED02G/M
Case of Error
Outdoor
Code (Red) (Green) Status
21 DC Peak (IPM Fault) 2times ◑ 1time ◑ 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
24 L_P/H_P Switch 2times ◑ 4times ◑ Low/High Press Switch Open Off
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 ◑ Inverter PCB input current is over100A(peak) for 2us Off
28 DC Link High Volt 2times ◑ 8times ◑ Off Off
29 COMP Over Current 2times ◑ 9times ◑ Over Inverter Compressor Current Off
32 D-Pipe High (INV) 3times ◑ 2times ◑ Off Off
40 CT Sensor (Open / Short) 4times ◑ O CT Circuit Malfunction Off
41 INV. D-Pipe Th Error 4times ◑ 1time ◑ Open/Short Off
44 Outdoor Air Th Error 4times ◑ 4times ◑ Open/Short Off
45 Cond. Pipe Th Error 4times ◑ 5times ◑ Open/Short Off
46 Suction Pipe Error 4times ◑ 6times ◑ Open/Short Off
51 Capacity Over 5times ◑ 1time ◑ Over combination Off
52 Signal Error(DSP Board <-> Main Board) 5times ◑ 2times ◑ Communication Poorly Off
53 Signal Error (Indoor <-> Outdoor) 5times ◑ 3times ◑ Communication Poorly Off
60 EEPROM Check Sum Error 6times ◑ O Check Sum Mismatching Off
61 Cond. Pipe Th High 6times ◑ 1time ◑ Cond. Temp. High Off
62 Heatsink Th High 6times ◑ 2times ◑ Heatsink Temp. High Off
65 Heatsink Th Error 6times ◑ 5times ◑ Open/Short Off
67 Outdoor BLDC Fan Lock 6times ◑ 7times ◑ Outdoor Fan is not operating Off
73 PFC Fault Error(S/W) 7times
◑ 3times ◑ Over Current of Outdoor Unit PFC Off