dFSerious
Amana Refrigerator dF Error Code
The defrost system has failed, often due to a heater or thermostat issue. Coils may ice up.
Common causes
- Failed defrost heater
- Failed defrost thermostat
- Control board not initiating defrost
How to fix it
- Unplug and manually defrost the freezer if heavily frosted.
- Test defrost heater and thermostat with multimeter.
- Replace faulty component.
⚠ When to call a pro: If you need to remove the evaporator cover to test, call a technician if uncomfortable.
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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.