LG R410A Service Manual page 177

Error
Error Contents
Code
Low voltage in the
107
fan motor
I Defect inspection method
1) Check the fan PCB DC link voltage lead wire connecting condition .
2) Check Fan PCB input power voltage (normal : rated ± 10%)
3) Check whether the fan PCB Capacitor ahs any abnormality.
In case it is abnormal then outer shape is deformed (outer shape expansion).
4) In case of Capacitor abnormality replace the fan PCB .
5) In case the error code exists even after the PCB replacement then replace the fan IPM PCB
DC link location of outdoor fan
Meaning
Low voltage in the fan
motor
Main Causes
1. Defective fan PCB DC link voltage
lead wire connection
2. Abnormal fan PCB Capacitor
3. Abnormal fan PCB input power
4. Fan PCB defect
Troubleshooting Guide
Error display
position
Concerned
Remote
Controller
Outdoor
Unit
Service Manual 177