Liebherr
Stuck Ignition Switch or Moisture in Ignition System
Continuous clicking (sparking) from gas cooktop even when all knobs are in OFF position
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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
Liquid spill into control area, Stuck or shorted ignition microswitch, Moisture around electrodes, Faulty spark module
How to Fix / Troubleshooting
Safety first: Turn all knobs to OFF. Disconnect the cooktop from mains power to stop sparking. If you smell gas, shut off the gas supply and ventilate.
User steps:
- If there was a recent spill, allow the cooktop to dry completely. You can leave it unplugged for several hours or overnight.
- Clean and dry around the burner bases and control knobs.
Technician steps:
- Remove the control panel and inspect the ignition microswitches on each gas valve for signs of liquid damage or sticking.
- Test each switch for proper open/close operation with a multimeter.
- Replace any faulty switches or the entire valve/switch harness if needed.
- If switches are good but sparking continues, replace the spark ignition module.
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Repair Difficulty
Medium
3/5
Required Part
Ignition Microswitch Set
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