Fan Ipm Overheat Error - Samsung AG042KSVANH Service Manual

4-3-33. Fan IPM Overheat error

Inverter / Hydro control part display
Judgment Method
Cause of problem
1. Inspection Method
Did check the foreign objects
between the heat sink pin?
Is the bolt of the heat sink fully tightened?
Did check the foreign objects
between the heat sink and IPM?
(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
Yes
Yes
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
74
Tighten Bolt