Montpellier
Flame Failure Device (Thermocouple) Not Holding
Gas burner ignites but goes out when the knob is released on a Montpellier gas hob or range.
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
Misaligned thermocouple tip, Dirty burner causing weak flame, Faulty thermocouple, Defective gas valve magnet unit
How to Fix / Troubleshooting
Safety first: Work in a well-ventilated area. Turn off gas supply before removing burner parts. Gas work beyond basic cleaning should be done by a Gas Safe registered engineer (or local equivalent).
- Hold knob longer: After ignition, keep the knob pressed in for 5–10 seconds to allow the thermocouple to heat fully.
- Check flame contact: Ensure the flame directly touches the thermocouple tip. If not, clean the burner ports and reposition the burner cap correctly.
- Clean thermocouple: Gently clean the thermocouple tip with fine emery paper to remove oxidation.
- If problem persists on one burner: The thermocouple for that burner may be faulty and should be replaced by a qualified gas engineer.
- If multiple burners affected: There may be an issue with the gas valve assembly or multiple thermocouples; professional diagnosis is required.
Advertisements
Repair Difficulty
Hard
4/5
Advertisements