Princess
Intermittent Power Loss / Thermal Cutout Tripping
Air fryer turns off mid-cycle and restarts or stays off.
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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
Overheating causing thermal cutoff to open, Loose mains connector inside housing, Failing main control PCB, Defective power switch (on models with mechanical switch)
How to Fix / Troubleshooting
Safety first: Unplug the unit and allow it to cool fully before inspection.
Steps to troubleshoot:
- Ventilation: Ensure the air fryer has adequate clearance and is not used under low cabinets. Overheating can trip the thermal cutoff.
- Check for blockage: Inspect air inlets and outlets for dust or grease buildup. Clean with a soft brush and vacuum.
- Inspect internal connections: Remove the housing and check all spade connectors on the mains input, power switch, and main control PCB. Tighten any loose connections.
- Test thermal cutoff: Locate the thermal cutoff / thermostat near the heater. If it opens at normal temperatures or shows signs of heat damage, replace it.
- Replace suspect parts: If power loss persists, replace the power switch (if fitted) or the main control PCB.
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Repair Difficulty
Hard
4/5
Required Part
Thermal Cutoff / Overheat Thermostat
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