GE refrigerator Error Code dF

What does dF mean?

Auto defrost did not complete properly — possible defrost heater or bimetal failure.

Common causes

• Open defrost heater
• Failed bimetal thermostat
• Failed defrost timer / control
• Loose defrost connections

Diagnostic & testing steps

1. 1. Force defrost via service mode
2. 2. Test defrost heater (~30-50 ohms)
3. 3. Test bimetal at low temp (closed below 28°F)
4. 4. Replace failed component

Tools required

• Multimeter
• Hair dryer

OEM parts & part numbers

Defrost Heater, Defrost Bimetal

Part numbers: WR51X10055, WR50X10068

Safety warning

⚠️ Frost buildup will cause warm fridge. Service promptly.