Thor Kitchen Stuck Cooling Fan Relay or Sensor Misread

Oven fan runs continuously even when 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

Failed EOC fan relay, Shorted temperature sensor, Stuck fan switch, Wiring short

How to Fix / Troubleshooting

Safety first: Disconnect power at the breaker before accessing internal components.

  • Allow full cool-down: Confirm the oven cavity is completely cool; some fans run for a period after use.
  • Test sensor: Check the oven temperature sensor resistance at room temperature. Replace if out of specification.
  • Inspect wiring: Look for shorts between the fan motor lead and line voltage.
  • Replace control board: If the fan receives power continuously even when the oven is off and the sensor is good, the EOC fan relay is likely stuck closed. Replace the electronic oven control board.
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Repair Difficulty

Hard 4/5

Required Part

Electronic Oven Control Board
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