Indesit Door interlock safety failure (stuck ON)

Microwave interior light, fan, and turntable operate when the door is closed, even without pressing START.

Advertisements

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.

Advertisements

Possible Causes

Welded or stuck primary door switch, Misadjusted door latch, Shorted control relay, Damaged door switch bracket

How to Fix / Troubleshooting

Danger: This is a serious safety fault. The microwave may generate radiation with the door closed unexpectedly. Unplug the appliance immediately and do not use it until repaired.

  • Step 1 – Unplug immediately: Disconnect from mains to prevent unintended operation.
  • Step 2 – Inspect door latches: Check that the door closes and opens smoothly and that the latch hooks are not bent or broken.
  • Step 3 – Access door switches (advanced): Remove the outer cabinet and control panel to reach the door switch assembly. Inspect for melted or deformed switches and brackets.
  • Step 4 – Test switches: With a multimeter, verify that each switch changes state correctly when the door is opened and closed. Replace any switch that remains closed when it should be open.
  • Step 5 – Check control relay: If switches are good, the main power relay on the PCB may be welded closed and the board will need replacement.

Recommendation: Due to the safety implications, have this fault repaired by an authorised Indesit technician.

Advertisements

Repair Difficulty

Professional Required 5/5

Required Part

Door Interlock Switch Set
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements