V-ZUG Flame Failure Device / Thermocouple Not Holding

Gas burner will not ignite or flame goes out immediately after releasing the knob.

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.

Possible Causes

Dirty or misaligned thermocouple tip, Weak thermocouple, Faulty magnet valve in gas tap, Poor grounding of burner assembly

How to Fix / Troubleshooting

Safety first: Ensure the area is well ventilated. Turn the burner knob to OFF and wait a few minutes before retrying.

User steps:

Clean the burner cap and head; ensure all gas ports are free of debris.
Locate the small metal rod (thermocouple) near the burner; gently clean its tip with a soft cloth or fine scouring pad to remove soot.
When lighting, press and hold the knob for 5–10 seconds after the flame appears to allow the thermocouple to heat.

Technical steps (gas technician):

Check the thermocouple output voltage when heated; if below specification, replace the thermocouple.
If the thermocouple is good, the gas valve's magnet unit may be defective and the gas tap assembly should be replaced.

Repair Difficulty

Medium 3/5

Required Part

Burner Thermocouple

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