Problem: Defrost system error – extended defrost cycle detected
How to Fix Refrigerator Error
- UNPLUG unit and manually defrost until all ice melts from evaporator coils.
- Remove evaporator cover panel in freezer.
- Test defrost heater for continuity (should read 20-50 ohms).
- Test defrost thermostat when cold (should read closed).
- Test defrost timer/adaptive control operation (should advance to defrost mode every 8-12 hours compressor run time).
- Replace faulty component causing incomplete defrost (heater most common).
- Clean evaporator coils thoroughly after defrosting.
- Monitor for 3 complete defrost cycles to verify heater activates and terminates properly without triggering DE code again.
Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.










