Microwave runs with door open or starts when closing the door without pressing START
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.
Possible Causes
How to Fix / Troubleshooting
Critical Safety Warning: A microwave that runs with the door open is dangerous. Unplug it immediately and do not use until repaired.
Steps (for technicians):
- Inspect and test all door interlock switches for proper operation and correct wiring.
- Check the door latch bracket and actuators for damage or misalignment.
- Replace any defective switches and ensure they are installed per Summit's wiring diagram.
- If switches and latch are correct, the control board may be misreading inputs and must be replaced.
This repair should be performed only by qualified personnel due to radiation safety requirements.
Repair Difficulty
Required Part
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