E5
Hotpoint
Magnetron Overheat Protection
Microwave displays E5 and may shut down or refuse to start, often after long cooking times.
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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 vents, Failed magnetron cooling fan, Faulty magnetron thermal cut-out, Overloaded cooking causing excessive heat
How to Fix / Troubleshooting
Safety first: Unplug the microwave.
- Cool down: Allow the unit to cool for at least 30 minutes, then reconnect and test.
- Check airflow: Ensure intake and exhaust vents are clear and that the unit has proper clearance.
- Inspect cooling fan: Remove the outer cabinet and verify the magnetron cooling fan spins freely and runs during operation.
- Check thermal cut-out: Inspect the magnetron thermal cut-out for secure mounting and intact wiring. Replace if open or damaged.
- Usage tips: Avoid running the microwave empty and allow rest periods between long cooking cycles.
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Repair Difficulty
Hard
4/5
Required Part
Magnetron Cooling Fan Motor
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