Microwave displays H18 and will not operate.

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

Failed primary or secondary door switch, Misaligned door latch, Broken door hook, Damaged door switch bracket

Safety Warning: Never attempt to bypass door switches. The door interlock system prevents microwave radiation leakage.

User checks:

Door closure: Ensure the door closes with a firm click and is not sagging.
Visual inspection: Look at the plastic door hooks; if cracked or broken, do not use the microwave.
Reset: Unplug for 5 minutes, then plug back in and test.

If H18 persists: Door switches or latch parts must be replaced and adjusted by a qualified technician to maintain safety compliance.

Hard 4/5

Door Switch Assembly

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