Cosori Thermal Cutoff / Overheat Trip

Air fryer shuts off mid-cycle and loses all power, then may come back on after cooling.

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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

Blocked ventilation, Failed or weak convection fan motor, Grease buildup around heating element, Overheating main control PCB, Failing thermal fuse or thermostat

How to Fix / Troubleshooting

Safety first: Unplug and let the unit cool completely before inspection.

  • Step 1 – Improve ventilation: Ensure at least 5 inches (12 cm) clearance around the air fryer. Do not operate under cabinets or in corners.
  • Step 2 – Clean thoroughly: Remove basket and clean the interior, especially the top area around the heating element and fan guard. Remove baked-on grease that can trap heat.
  • Step 3 – Check fan operation: Start a cycle and listen for the fan. If it stops before the unit shuts off, the fan motor may be overheating or failing. Replace the convection fan motor if it is noisy, slow, or intermittent.
  • Step 4 – Inspect thermal devices: Access the heating assembly and locate any thermal fuses or thermostats. Test for continuity. Replace any that are open or show signs of heat damage.
  • Step 5 – Control board cooling: Ensure the main control PCB area is not blocked by dust and that any small internal vents are clear.
  • Stop use if burning smell: If you notice a strong burning smell or visible smoke, discontinue use and seek professional service.
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Repair Difficulty

Hard 4/5

Required Part

Thermal Fuse / Thermostat
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