Fan Ipm Overheat Error - Samsung AM080xXV Series Service Manual

4-3-45 Fan IPM Overheat error

Outdoor unit
display
Judgment
∙ IPM internal temperature more than 85°C (E455, E355)
Method
Cause of
∙ Heat sink and IPM assembly defective.
∙ Defective heat sink cooling
problem
1. Cause of problem
Did check the foreign objects
between the heat sink pin?
fixing bolt are tightened completely?
Did check the foreign objects
between the heat sink and IPM?
Samsung Electronics
(FAN1 PCB)
(FAN2 PCB)
Power Off
Yes
Does the heatsink
Yes
Yes
Replace fan PCB
No
Remove foreign objects
*Cold heat sink assembly defect occurs.
No
Remove foreign objects and
No
apply the heat sink grease.
And then reassembly
Troubleshooting
Tighten Bolt
4-71