E12
Zanussi
Cavity Overtemperature Protection
Microwave shows E12 and may shut down unexpectedly; often associated with long cooking times or high power.
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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
Blocked ventilation, Failed cavity thermal cut-out, Faulty temperature sensor, Overuse at maximum power without rest
How to Fix / Troubleshooting
Safety first: Turn off and unplug the microwave. Allow it to cool for at least 30 minutes.
- Improve ventilation: Ensure the microwave has the clearances specified in the Zanussi manual. Do not enclose it tightly in cabinetry without proper venting.
- Clean vents: Remove dust and grease from all external vents using a vacuum and soft brush.
- Check thermal cut-outs: With the cover removed and power disconnected, test cavity thermal cut-outs for continuity. Replace any that are open and do not reset when cool.
- Avoid overloading: For large or dense foods, use lower power settings and longer times to reduce heat buildup.
If E12 recurs frequently despite good ventilation, have a technician check the temperature sensor and control board.
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Repair Difficulty
Medium
3/5
Required Part
Cavity Thermal Cut-Out
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