LG ARUV Series Service Manual page 275

Error No. Error Type
Over current of Main out-
door fan motor (inverter fan
106
IPM fault)
Error diagnosis and countermeasure flow chart
Is there some distance
between power cable and
transmission cable?
Yes
Is inverter fan IPM PCB
normal? [refer electric
component part]
Yes
Is inverter fan PCB
Normal? [refer electric
component part]
Yes
Is inverter fan motor
Normal? [refer electric
component part]
Yes
Adjust connection after
check PWM signal cables
[refer electric component part]
* The dashed line(---) in above flow chart is only applicable for Multi V Space
** position of inverter fan motor connector
Inverter fan main PCB
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Only for training and service purposes
Error Point
Over current of Main outdoor
fan motor
Make some distance
No
between power cable
and transmission cable*
No
Replace inverter fan IPM PCB
No
Replace inverter fan PCB
No
Replace inverter fan motor
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Troubleshooting Guide
Main Reasons
1. Bad connection of fan motor connector
2. Defect of fan Motor.
3. Defect of heat sink cooling fan
LGE Internal Use Only