OK
Door Interlock / Monitor Switch Miswiring or Failure
Microwave interior light, fan, and turntable run when door is opened
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Safety Warning
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.
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Possible Causes
Incorrectly wired door switches, Stuck or welded monitor switch, Broken door switch bracket, Shorted door switch contacts
How to Fix / Troubleshooting
Danger: If the microwave appears to run with the door open, unplug it immediately. This is a serious safety hazard.
- 1. Do not use the microwave: Leave it unplugged until repaired.
- 2. Inspect door switch assembly: With the cover removed (unplugged), check that each switch is firmly mounted and that wiring matches the service diagram for your OK model.
- 3. Replace faulty switches: Any switch that shows continuity when it should be open, or vice versa, must be replaced.
- 4. Verify correct wiring: Ensure common (COM), normally open (NO), and normally closed (NC) terminals are wired according to the wiring diagram.
- 5. If unsure: Have a qualified technician correct the interlock system.
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Repair Difficulty
Professional Required
5/5
Required Part
Door Interlock Switch Set
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