Tristar
Component Overheating / Insulation Off-Gassing
Persistent plastic or electrical burning smell from new or lightly used air fryer.
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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
Protective oils burning off heating element, Overheating wiring insulation near heater, Misrouted harness touching hot surfaces, Defective main control PCB component overheating
How to Fix / Troubleshooting
Safety: If the smell is strong or accompanied by smoke, unplug immediately.
- Initial burn-in:
- For new units, run empty at 200°C (392°F) for 10–15 minutes with good ventilation to burn off manufacturing residues.
- Inspect wiring (advanced):
- Remove the cover and inspect wiring near the heater and PCB.
- Look for melted insulation, discoloration, or wires touching the heating element.
- Reroute and secure harnesses away from hot surfaces using high-temp ties.
- Check PCB:
- Inspect the main control board for burnt components or darkened areas.
- Replace damaged parts: Replace any burnt wiring harnesses or the main control PCB if overheating is evident.
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Repair Difficulty
Hard
4/5
Required Part
Wiring Harness
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