Ikea Door Interlock System Failure (Serious Safety Hazard)

Microwave runs with the door open or starts when the door is being closed.

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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

Stuck or welded door switch contacts, Miswired door switches, Broken switch mounting bracket, Shorted control board input

How to Fix / Troubleshooting

Danger: A microwave that runs with the door open is extremely dangerous and must be disconnected from power immediately.

User actions:

  • 1. Unplug immediately: Do not use the microwave until it is repaired.
  • 2. Do not attempt to bypass switches: Never tape or jumper door switches.

Technician actions:

  • Inspect and replace all door interlock switches and mounting brackets.
  • Verify correct wiring according to the IKEA service diagram.
  • Test the control board inputs for proper operation.

Resolution: Replace the door switch assembly and/or control board with IKEA-compatible parts. Perform a leakage test after repair.

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Repair Difficulty

Professional Required 5/5

Required Part

Door Interlock Switch Assembly
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