Hansa
Intermittent Shutdown – Thermal or Door Switch Issue
Microwave runs but stops before the set time is reached, without any error code.
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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
Overheating of magnetron or transformer, Weak thermal cutout, Loose door switch contacts, Faulty control board
How to Fix / Troubleshooting
Safety first: Unplug the microwave and allow it to cool if it feels hot externally.
- Check ventilation: Ensure vents are clear and installation clearances are respected.
- Test with lower power: Run a test on medium power. If it completes the cycle, overheating at high power may be tripping a thermal cutout.
- Check door behavior: Lightly tap the door during operation (without opening). If the unit stops, a loose door switch or latch is likely.
- Professional diagnosis: A technician should test thermal cutouts, door switches, and the control board for intermittent faults.
Warning: Do not block vents or operate the microwave in an enclosed cabinet without proper ventilation.
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Repair Difficulty
Hard
4/5
Required Part
Magnetron Thermal Cutout
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