F5Serious
Fisher & Paykel Refrigerator F5 Error Code
The defrost system is not working properly, causing frost buildup and reduced cooling efficiency.
Common causes
- Defrost heater burned out
- Defrost thermostat open
- Defrost timer or control board fault
- Defrost sensor failure
How to fix it
- Unplug the fridge and remove the rear panel inside the freezer to access the evaporator.
- Check the defrost heater for continuity with a multimeter; replace if open.
- Test the defrost thermostat (bi-metal) for continuity when cold; if open, replace it.
⚠ When to call a pro: If heater and thermostat are good but code persists, the main control board may need replacement – call a pro.
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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.