E10
Westinghouse
Door Sensing Circuit Fault
Microwave shows E10 and the interior light does not turn on when the door opens; unit may not 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
Failed door sensing switch,Loose door switch bracket,Faulty wiring between door switch and control board,Defective main control board input circuit
How to Fix / Troubleshooting
Safety first: Unplug the microwave before any inspection of door switches.
Basic checks:
- 1. Check interior light behavior: Open and close the door. If the light never comes on and E10 is displayed, the control may not be detecting door open/close correctly.
- 2. Inspect door alignment: Ensure the door closes squarely and the latch hooks engage fully. Adjust hinges if visibly loose.
Advanced steps:
- 3. Access door switches: Remove the outer cover and locate the door switch assembly near the latch side.
- 4. Test door sensing switch: Using a multimeter, test the switch that signals door open/close to the control board. Replace if intermittent or non-functional.
- 5. Check wiring: Inspect the harness from the switch to the control board for damage or loose connectors.
If replacing the door sensing switch and repairing wiring does not clear E10, the main control board may need replacement.
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Repair Difficulty
Hard
4/5
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