Miele Door Switch / Control Logic Fault

Microwave cavity light stays on even when the door is closed and the unit is not running.

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

Stuck door switch, Misadjusted door latch, Control board relay stuck closed, Shorted lamp control transistor

Safety first: Unplug the microwave to prevent overheating of the lamp and internal components.

Check door closure: Ensure the door closes fully and latches correctly.
Inspect door switches (advanced): Test the door switches for proper operation and replace any that are stuck closed.
Control board: If switches are good, the lamp control circuit on the board may be stuck and the board may need replacement.

Hard 4/5

Door Switch Assembly / Main Control Module

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