Bauknecht
Cooling Fan Overrun or Stuck Relay
Microwave fan continues to run for a long time after cooking has finished.
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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
Normal cooling overrun, Stuck fan relay on control board, Overheating sensors keeping fan on, Faulty temperature sensor
How to Fix / Troubleshooting
Note: Some Bauknecht models keep the fan running for a short period after cooking to cool internal components.
- Step 1 – Observe duration: If the fan stops within a few minutes, this is usually normal.
- Step 2 – Check for heat: If the cabinet feels very hot, the fan may be correctly cooling overheated parts. Improve ventilation around the unit.
- Step 3 – Persistent running: If the fan runs indefinitely until unplugged, the fan relay or sensor may be faulty. A technician should test the cooling fan circuit, thermal sensors, and control board.
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Repair Difficulty
Medium
3/5
Required Part
Cooling Fan Motor / Control Board
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