LG ARUV Series Service Manual page 276

Troubleshooting Guide
Error No. Error Type
DC voltage charging failure
107
of inverter fan motor drive
Error diagnosis and countermeasure flow chart
Is DC LINK cable
Normal?*
Yes
Replace inverter fan PCB
* Location of fan DC link connector
Inverter fan main PCB
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Only for training and service purposes
Low voltage of Main outdoor
fan motor
No
Adjust DC LINK cables
Error Point
1. Bad connection of voltage lead cable of
main PCB DC link
2. Defect of fan main PCB Capacitor
3. Defect of fan PCB
Inverter fan IPM PCB
- 276 -
Main Reasons
LGE Internal Use Only