JennAir Door Switch or Relay Stuck Closed

Microwave light, fan, and turntable come on when the door is closed, even without pressing Start.

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

Shorted primary door switch, Misadjusted door switch bracket, Stuck relay on control board, Shorted wiring harness

Safety First: Unplug the microwave immediately. A microwave that runs with the door closed but not commanded can be unsafe.

Inspect door switches: Access the door switch assembly and test each switch with a multimeter. Replace any switch that shows continuity when it should be open.
Check switch bracket: Ensure the switch bracket is not bent and that the door latches engage the switches correctly.
Control board relay: If switches test good, the control board may have a stuck relay. Replace the board if the relay is welded closed.

Hard 4/5

Door Switch Assembly

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