Proline Door Switches Miswired or Stuck Closed

Microwave light, fan, and turntable run when the door is closed, even without pressing START.

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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 primary door switch, Misadjusted door latch, Incorrectly installed door switch after prior repair, Shorted control relay

How to Fix / Troubleshooting

Danger: A microwave that runs with the door closed but not commanded ON is unsafe. Unplug it immediately.

User-level action:

  • Unplug the microwave and do not use it until repaired.

Next steps:

  • A technician must inspect the door switch assembly and control board to correct wiring and replace any stuck switches or relays.
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Repair Difficulty

Professional Required 5/5

Required Part

Door Switch Kit
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