E20
AEG
Low-Temperature Control Fault
E20 is displayed and the cooker may not detect or control the Keep Warm function correctly.
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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
Drifted NTC sensor at low temperatures, Firmware calibration error, Faulty low-power heater control, Poor contact between pot and sensor
How to Fix / Troubleshooting
Safety first: Unplug the cooker and allow it to cool.
- Clean contact surfaces: Ensure the heating plate and pot bottom are clean and flat to allow accurate low-temperature sensing.
- Test NTC at room temp: Measure the main NTC sensor resistance at room temperature and compare with expected values. Replace if significantly out of range.
- Check low-power control: Inspect the PCB for a separate low-power relay or triac controlling Keep Warm. Look for damage or bad solder joints.
- Firmware reset: Perform a factory reset to restore default temperature calibration if supported.
- Replace sensor or PCB: If E20 persists, replace the NTC sensor first; if unresolved, replace the main PCB.
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Repair Difficulty
Hard
4/5
Required Part
Main Temperature Sensor (NTC)
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