Bauknecht
Flame Supervision Device (Thermocouple) Failure
Gas cooktop burner ignites but goes out when knob is released
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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
Faulty thermocouple, Misaligned thermocouple tip not in flame, Loose thermocouple connection at gas valve, Weak magnet in safety valve
How to Fix / Troubleshooting
Safety first: Turn off gas supply before working on gas components.
- Check flame contact: Ensure the flame directly heats the thermocouple tip. Adjust burner cap if needed.
- Hold longer: After ignition, hold the knob pressed for 5–10 seconds to allow the thermocouple to heat fully.
- Inspect thermocouple: Clean the tip with fine abrasive pad. Ensure it is firmly mounted near the flame.
- Replace thermocouple: If the flame still goes out, replace the thermocouple for that burner. If the problem persists, the gas valve's safety magnet may be faulty and the valve should be replaced by a qualified gas technician.
Warning: Gas work must comply with local regulations; use a licensed gas fitter where required.
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Repair Difficulty
Hard
4/5
Required Part
Gas Burner Thermocouple
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