E5
Proline
Cavity Overheat or Cooling Failure
Microwave stops mid-cycle and displays E5; may be accompanied by a hot smell from the top or side vents.
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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 top or rear vents, Failed cavity temperature sensor (NTC), Failed cooling fan motor, Grease buildup restricting airflow
How to Fix / Troubleshooting
Safety first: Unplug the microwave and allow it to cool completely before further checks.
User-level checks:
- Ventilation: Ensure there is adequate clearance around the microwave as specified in the Proline manual. Remove any items stacked on top or pressed against the sides.
- Clean vents: Use a soft brush or vacuum to remove dust and grease from the external vents.
- Check usage: Avoid running the microwave empty or for extended periods at maximum power, as this can cause overheating.
If E5 persists:
- The cavity temperature sensor (NTC) or cooling fan may be faulty. These require cabinet removal and electrical testing.
- Contact a qualified technician to test and replace the sensor or fan as needed.
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Repair Difficulty
Hard
4/5
Required Part
Cavity Temperature Sensor (NTC)
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