Thor Kitchen Stuck Cooling Fan Relay or Faulty Temperature Sensor

Oven fan runs continuously even when the oven is off and cool.

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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

Stuck fan relay on control board, Shorted temperature sensor reading high, Control board firmware glitch, Faulty high-limit thermostat

How to Fix / Troubleshooting

Safety First: Disconnect power before accessing the control board or fan wiring.

  • Allow full cool-down: Ensure the oven is completely cool; some models keep the fan running for a period after use.
  • Power reset: Turn off the breaker for 5 minutes, then restore power. If the fan starts immediately, suspect a control issue.
  • Test sensor: Check the oven temperature sensor resistance at room temperature. Replace if it reads abnormally low (indicating high temperature).
  • Inspect control board: If the sensor is good, the fan relay on the electronic oven control board may be stuck closed. Replace the board.
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Repair Difficulty

Medium 3/5

Required Part

Electronic Oven Control Board (EOC)
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