Chefman Stuck Lamp Relay / Door Switch Fault

Interior light stays on all the time, even when the unit is off.

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

Lamp relay on control board stuck closed, Shorted lamp circuit, Door switch stuck in closed position, Control logic fault

Safety first: Unplug the unit when not in use if the light remains on to avoid overheating.

Door switch test: Check the door switch operation with a multimeter. Replace if it remains closed regardless of door position.
Control board inspection: Inspect the lamp relay on the PCB for signs of burning. If stuck, replace the main control PCB.
Temporary mitigation: As a temporary measure, you may disconnect the lamp connector, but this removes interior lighting functionality.

Medium 3/5

Main Control PCB

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