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Troubleshooting
4-3 Appropriate Measures for Different Symptom (cont.)
4-3-44
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Outdoor unit display
• IPM internal temperature more than 90℃
Judgment 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
Fan PBA IPM overheating error
(FAN1 PBA)
(FAN2 PBA)
Power Off
Yes
Does the heatsink
Yes
Yes
Replace fan PBA
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
128
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