Tristar Safety Interlock / Error State Without Code

Air fryer beeps repeatedly and will not start, even though display looks normal.

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.

Possible Causes

Door/basket switch not engaged, Overtemperature lockout still active, Internal fault detected by PCB without user-visible code, Stuck button on touch panel

How to Fix / Troubleshooting

Safety: Unplug before internal checks.

Basic checks:
- Remove and firmly reinsert the basket.
- Ensure no accessories prevent full closure.
Cool-down:
- Allow the unit to cool for 30–60 minutes in case of overtemperature lockout.
Check buttons:
- Press each button individually to ensure none are stuck or physically jammed.
Inspect basket switch (advanced):
- Test the microswitch for proper operation and replace if faulty.
Control board: If all interlocks are good, the main control PCB may be in a fault state and require replacement.

Repair Difficulty

Medium 3/5

Required Part

Door/Basket Microswitch

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