LG LSN120HSV4 - Page 75

Part 5. Trouble Shooting
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39
Transmission Error
Between (PFC Micom ’
INV Micom)
Communication Error
Between PFC Micom
and INV Micom.
1. Micom defect/Circuit defect
2. Different Micom S/W Version
3. ODU inverter PCB assembly damage
Display
code
Title Cause of error Check point & Normal condition
n Error Diagnosis and Countermeasure Flow Chart
Is Inverter PCB assembly normal?
No
Replace inverter PCB assembly
Is PFC Micom & INV Micom
S/W Program normal?
No
Upgrade Micom Program
Yes
Yes
Recheck power and installation condition