LG MULTI V IV ARNU07GTU 2 Series - Page 128

Troubleshooting Guide
- 128 -
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1. Overload operation (Pipe clogging/Covering/EEV
defect/Ref. overcharge
2. ODU fan motor assemble condition abnormal
(Coil disconnection/Short/Insulation damage)
3. Fan PCB assembly defect
Error No. Error Type Error Point Main Reasons
IPM protection circuit activation
(over current)
ODU Fan PCB
IPM Fault
106＊
Master
1061
Slave2
1062
Slave3
1064
n Error Diagnosis and Countermeasure Flow Chart
Check ODU fan motor assemble condition and locking
→ Reassemble or replace if abnormality found
1.Check fan motor U,V,W connector connection condition
2.Check fan motor wire disconnection
Yes
No
Yes
No
Yes
Is fan motor assemble
condition normal?
Is fan motor wire connection
condition normal?
Is fan PCB assemble
condition normal?
No
1.Check fan PCB connector condition
→ Reassemble if abnormality found
2.Check assemble condition between fan PCB and Heatsink
Yes
Is fan PCB assembly normal?
No
Fan left(1) Fan right(2)
Fan Motor Wire connection
Replace fan PCB assembly
Recheck power and
installation condition
→ Reassemble wire if abnormality found
→ Replace ODU fan motor if abnormality found
→ Reassemble heatsink if abnormality found