dF
KitchenAid · KRFC300ESS 20 cu. ft. Counter-Depth French Door Refrigerator
The automatic defrost system has failed. Evaporator coils are accumulating frost/ice, reducing cooling efficiency. Check the defrost heater for continuity (should read 20-50 ohms). Check the defrost thermostat/bi-metal (closed at cold temps, open above ~50°F). Check the adaptive defrost control board (ADC). Symptoms: freezer frosts up, fresh food warms gradually over days.
Error dF on the KitchenAid KRFC300ESS 20 cu. ft. Counter-Depth French Door Refrigerator means: Defrost Failure. The top-ranked community fix is “Test and Replace the Defrost Heater and Thermostat” (hard difficulty, ~90 min, DIY cost: $20-$40). 2 community-ranked fixes available below.
Published February 2026 · 2 fixes · refrigerator
Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.
While many refrigerator repairs can be done safely at home, consider hiring a qualified technician if:
Average professional repair cost for this issue: $150-$250.
Communication Failure
Compressor Overload / Overcurrent
Defrost Heater Open Circuit
Water Dispenser Slow or Not Working
Door Gasket Not Sealing
Defrost Thermostat Fault
Fresh Food Fan / Diffuser Fan Failure
Freezer Fan Failure
The KitchenAid KRFC300ESS 20 cu. ft. Counter-Depth French Door Refrigerator has 8 other known error codes:
Error code dF also appears on 1 other KitchenAid model:
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