LG ARNU Series - Page 276

Troubleshooting Guide
- 276 -
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. Bad connection of voltage lead cable of
main PCB DC link
2. Defect of fan main PCB Capacitor
3. Defect of fan PCB
Error No. Error Type Error Point Main Reasons
Low voltage of Main outdoor
fan motor
DC voltage charging failure
of inverter fan motor drive
107
■ Error diagnosis and countermeasure flow chart
* Location of fan DC link connector
Is DC LINK cable
Normal?*
No
Adjust DC LINK cables
Replace inverter fan PCB
Yes
Inverter fan main PCB
Inverter fan IPM PCB