Thermador Continuous Ignition Sparking

Gas burner continues to click (spark) even after the flame is lit.

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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

Wet or dirty igniter electrode, Misaligned burner cap causing poor flame sensing, Faulty spark module not sensing flame, Shorted ignition switch

How to Fix / Troubleshooting

Safety first: Turn all burner knobs OFF and disconnect power to the cooktop or range before cleaning around igniters.

  • Dry igniters: If there was a spill or boil-over, remove burner caps and gently dry the igniter electrodes with a soft cloth. Allow several hours of air drying if heavily soaked.
  • Clean electrodes: Wipe the ceramic and metal tip of each igniter with a damp cloth, then dry. Remove any food residue or grease.
  • Re-seat caps: Ensure burner caps are correctly positioned to allow the flame to contact the igniter area.
  • Power reset: Restore power and test. If clicking continues with all knobs OFF, an ignition switch or spark module may be stuck and require replacement.

If only one burner causes continuous clicking when turned on, replace that burner’s igniter electrode. If all burners click continuously, the spark module or a stuck valve switch is likely at fault.

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Repair Difficulty

Medium 3/5

Required Part

Spark Ignition Module
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