Fan Ipm Overheat Error - Samsung AM045NN4DEH Series Service Manual

Troubleshooting

4-4-72 Fan IPM Overheat error

Outdoor unit display
Criteria
Cause of problem
1. Cause of problem
Did check the foreign objects between
Is the bolt of the heat sink fully tightened?
Did check the foreign objects between
120
(FAN1 PCB)
(FAN2 PCB)
∙ IPM internal temperature more than 85°C (E455, E355)
∙ Heat sink and IPM assembly defective.
∙ Defective heat sink cooling
Power Off
the heat sink pin?
Yes
Yes
the heat sink and IPM?
Yes
Complete
No
Remove foreign objects
*Cold heat sink assembly defect occurs.
No
Remove foreign objects and
No
apply the heat sink grease.
And then reassembly
Tighten Bolt
Samsung Electronics