E25
Electrolux
Cavity Temperature Sensor (Thermistor) Fault
Microwave shows E25 and fan runs but unit does not heat.
Advertisements
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.
Advertisements
Possible Causes
Open or shorted cavity thermistor, Damaged thermistor wiring harness, Faulty connection at main PCB, Failed main control board temperature input
How to Fix / Troubleshooting
Safety: Disconnect power before accessing internal components.
User-level checks:
- Allow cooling: If the microwave has been used heavily, let it cool for 30–60 minutes, then try again. Overheat protection may have triggered.
- Power reset: Unplug for 5 minutes to clear transient errors.
Technician-level checks:
- Locate the cavity temperature sensor (thermistor), usually mounted on the top or side of the oven cavity.
- Test the thermistor resistance at room temperature and compare with Electrolux specifications; replace if open, shorted, or out of range.
- Inspect the wiring harness from the thermistor to the main control board for damage or loose connectors.
- If the thermistor and wiring are good, the temperature sensing circuit on the main control board may be defective and require board replacement.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Cavity Thermistor
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements