LG ARUV Series Service Manual page 271

Error
Error Type
No.
62
Heat sink over heat
Error diagnosis and countermeasure flow chart
Does cooling fan
rotate while compressor
operation?
Yes
Is value of sensor
resistance normal?*
Yes
Replace inverter fan PCB
* Heat sink temperature sensor (±5% tolerance) : 10°C = 20.0kΩ : 25°C= 10.0kΩ : 50°C= 3.5kΩ : 85°C= 1.0kΩ
Position of cooling fan
drive connector in main PCB
Check DC 12V output during inverter
compressor operation
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Error Point
Heat sink over heat
Is resistance value
No
of cooling fan coil correct?
[refer electric
component part]
Yes
Replace main PCB
No
Replace sensor
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Main Reasons
1. Defect of heat sink cooling fan
2. Defect of inverter compressor PCB
3. Loose connection of connector of cooling fan
4. Defect of temperature sensor of heat sink
No
Replace cooling fan
Heat sink cooling fan
Heat sink temperature
sensor connection
Troubleshooting Guide
LGE Internal Use Only