Amica
Door Switch Logic Failure – Stuck Relay or Miswired Switches
Microwave interior light, fan, and turntable run when 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 power relay on control PCB, Misadjusted door switch bracket, Incorrect wiring of door switches after previous repair, Welded door switch contacts
How to Fix / Troubleshooting
Safety: This is a serious safety fault. Unplug the microwave immediately.
- Do not use: Operating with a faulty door interlock can expose users to microwave radiation.
- Inspect door switches: With power disconnected, remove the cover and check the door switch assembly for loose or misaligned switches.
- Compare wiring: Use the wiring diagram on the cabinet to verify that each wire is on the correct switch terminal.
- Check control relay: If wiring and switches appear correct, the power relay on the control board may be stuck closed and the board should be replaced.
- Professional repair recommended: Due to safety implications, have an authorized Amica technician verify and repair the interlock system.
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Repair Difficulty
Professional Required
5/5
Required Part
Door Interlock Switch Set
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