Microwave shows H17 and may not start or may stop shortly after starting.

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

Faulty door sensing circuit on control PCB, Intermittent door switch signals, Loose door switch harness

Safety: Door switches are part of the safety interlock system. Do not bypass or tape them down.

Steps:

Inspect door: Check that the door closes evenly and fully. Look for bent hinges or misalignment.
Clean latch area: Wipe the door latches and the corresponding openings on the cabinet to remove grease or debris.
Gentle door test: Open and close the door firmly several times, then try a short cook cycle.

If H17 continues: A technician should test and, if needed, replace the door switch assembly or control PCB.

Medium 3/5

Door Switch Assembly

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