dESerious
Frigidaire Refrigerator dE Error Code
The defrost system is malfunctioning, leading to frost buildup in the freezer or refrigerator section.
Common causes
- Defective defrost heater
- Failed defrost thermostat or defrost bi-metal
- Defective defrost control board or timer
How to fix it
- Unplug refrigerator and check for frost buildup. If heavy, manually defrost by leaving doors open.
- Test defrost heater continuity with a multimeter; should show low resistance.
- Check defrost thermostat (located on evaporator coils) for continuity when cold (below 15°F).
⚠ When to call a pro: If heater or thermostat tests bad, or if the code persists after replacing those parts.
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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.