LG Therma V AHBW A0 Series Service Manual page 63

Display
Title
code
Transmission Error
Between (PFC Micom '
39
INV Micom)
Check Flow Chart
Is PFC Micom and INV Micom
S/W Program normal?
Yes
Is Inverter PCB assembly normal?
Yes
Recheck power and installation condition
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Only for training and service purposes
Cause of error
Communication Error
Between PFC Micom
and INV Micom.
No
Upgrade Micom Program
No
Replace inverter PCB assembly
- 63 -
Trouble Shooting Guide
Check point & Normal condition
1. Micom defect/Circuit defect
2. Different Micom S/W Version
3. Inverter PCB assembly damage
LGE Internal Use Only