F5Serious
Kenmore Refrigerator F5 Error Code
The defrost heater is not drawing current or has failed, leading to frost buildup.
Common causes
- Open defrost heater
- Faulty defrost thermostat (bi-metal)
- Defective control board (no power to heater)
How to fix it
- Unplug and inspect the defrost heater for visible breaks or burn marks.
- Check continuity of the defrost thermostat (should close when cold).
- If heater or thermostat fails continuity test, replace the defective part.
⚠ When to call a pro: If heater and thermostat test good, the control board may need replacement by a technician.
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Always unplug the appliance (and turn off the water for washers/dishwashers) before inspecting. These guides are for information only and are not a substitute for a professional repair.