AEG
Runaway Heating / Thermostat Control Failure
Oven overheats – food burns quickly, temperature far above setting, sometimes with strong smell.
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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
Shorted temperature sensor, stuck heating relay on control board, miswired elements, failed safety thermostat not opening
How to Fix / Troubleshooting
Safety first: Switch off the oven immediately and isolate from mains. Allow to cool.
- Verify temperature: Use an oven thermometer to confirm overheating once safe to test.
- Sensor check: Test the NTC sensor; a shorted sensor can cause the control to overheat the oven. Replace if resistance is too low.
- Relay test: With power off, inspect the control board for a relay welded closed (burnt contacts). If elements heat even when the oven is off, a stuck relay is likely; replace the board.
- Wiring verification: Ensure elements are wired according to the AEG wiring diagram; incorrect connections can bypass control.
Warning: Do not use the oven until the cause of overheating is resolved; fire risk is significant.
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Repair Difficulty
Professional Required
5/5
Required Part
Electronic Oven Control (EOC) Board
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