E3
Hotpoint
Cavity Overheat or Temperature Sensor Error
Microwave displays E3 and may shut down during operation, often related to temperature.
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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
Overheated cavity, Blocked vents, Failed cavity thermal cut-out, Faulty cavity temperature sensor, Cooling fan not running
How to Fix / Troubleshooting
Safety first: Unplug the microwave and allow it to cool.
- Allow cooling: Wait at least 30 minutes, then reconnect and test.
- Check ventilation: Ensure vents are not blocked and installation clearances meet Hotpoint specifications.
- Inspect fan and TCOs: Remove the outer cabinet and verify the cooling fan runs freely. Check the cavity thermal cut-out and temperature sensor wiring.
- Replace faulty parts: If the cavity thermal cut-out is open or the temperature sensor is out of spec, replace the defective component.
- Professional service: If E3 recurs, have a technician check for internal overheating or control board issues.
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Repair Difficulty
Hard
4/5
Required Part
Cavity Thermal Cut-Out (TCO)
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