Case Study - E455 (Fan Ipm Overheat Error) - Samsung AM080FX A Series Service Manual

Troubleshooting
4-4 Case study for trouble shoots (cont.)
4-4-15 Case study – E455 (Fan IPM overheat error)
- Problem : system failure by E455
- Condition : Discharge guide duct 20m with motorized damper
- Trouble shooting
Outdoor unit display
Judgment Method ∙ IPM internal temperature more than 85°C (E455, E355)
∙ Heat sink and IPM assembly defective.
Cause of problem
∙ Defective heat sink cooling
- Action : S-net pro data check & back up
Samsung Electronics
(FAN1 PBA)
(FAN2 PBA)
Fan PBA and heat sink
Heat sink
245