Dacor Stuck cooling fan relay or temperature sensor fault

Oven cooling 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

Stuck closed fan relay on control board, Shorted cooling fan thermostat, Faulty ERC fan control output, Wiring short causing constant power to fan

How to Fix / Troubleshooting

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

  • Allow full cool-down: Some Dacor models keep the fan running for an extended period after use. Wait at least 60–90 minutes to confirm it truly runs continuously.
  • Inspect control board: Access the ERC or relay board and look for a fan relay that may be welded closed. Replace the board if the relay is stuck.
  • Check thermostat (if separate): Some ovens use a cooling thermostat that closes at high temperature. Test it for continuity at room temperature; it should be open. Replace if stuck closed.
  • Wiring: Verify that the fan is not wired directly to line voltage due to a miswire from previous repairs.
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Repair Difficulty

Medium 3/5

Required Part

Oven Cooling Fan Thermostat
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