F05
Hotpoint-Ariston
Oven Overheat Thermostat / Safety Cut-Out Tripped or Faulty
Oven display shows F05 and the oven light and fan may work but heating does not start.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Manual reset safety thermostat tripped, Failed non-resettable thermal fuse, Blocked cooling vents causing overheating, Loose connection on safety thermostat terminals
How to Fix / Troubleshooting
Safety: Isolate the appliance from mains power and allow it to cool completely.
- Locate safety thermostat: On Hotpoint-Ariston ovens, the overheat thermostat is usually mounted on the top of the oven cavity or rear panel, often with a red reset button in the center.
- Reset (if applicable): Press the small button in the center of the thermostat until you feel a click. Restore power and test the oven. If F05 clears and the oven heats, monitor for recurrence.
- Check airflow: Ensure that ventilation slots around the oven are not blocked by cabinetry or foil. Clean any dust from cooling fan inlets and outlets.
- Test continuity: If there is no reset button or the thermostat will not reset, disconnect its wires and test for continuity with a multimeter. An open circuit indicates a blown thermostat or thermal fuse.
- Replace thermostat/fuse: Fit the correct Hotpoint-Ariston overheat thermostat or thermal fuse, transferring any mounting brackets. Investigate causes of overheating (failed cooling fan, blocked vents) before returning the appliance to service.
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Repair Difficulty
Medium
3/5
Required Part
Oven Overheat Thermostat / Thermal Cut-Out
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