Severin
Mechanical Thermostat Shaft / Potentiometer Failure
Oven temperature knob turns but has no effect on heating level
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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
Broken thermostat shaft, Stripped knob insert, Failed potentiometer on electronic control, Loose thermostat mounting
How to Fix / Troubleshooting
Safety first: Disconnect mains power before removing control knobs or panels.
- Check knob: Pull off the temperature knob and inspect the plastic insert. Replace the knob if cracked or stripped.
- Inspect thermostat shaft: If the shaft is broken or spins freely without clicking, the thermostat is faulty and must be replaced.
- Electronic models: If using a rotary encoder or potentiometer, check the connection to the control PCB and reseat the connector.
- Replace thermostat/control: Remove mounting screws, disconnect wiring (noting positions), and install a new Severin thermostat or rotary control. Refit knob.
- Test: Restore power and verify that changing the knob setting changes the oven temperature.
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Repair Difficulty
Medium
3/5
Required Part
Oven Thermostat
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