Liebherr Ignition System Failure

Gas burner will not ignite (no clicking, no spark) on one or more burners

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

Defective ignition switch in control knob, Failed spark module, Broken ignition wire, No mains power to cooktop

How to Fix / Troubleshooting

Safety first: Turn all burner knobs to OFF. If you smell gas, ventilate the area and shut off the gas supply immediately.

User checks:

Confirm the cooktop has electrical power (indicator lights or display on).
Try igniting different burners. If none spark, the issue is likely central (module or power).
Attempt to light a burner with a long match or lighter. If it lights and stays on, the gas supply is present but ignition is faulty.

Technician checks:

Test the ignition switches on each gas valve for continuity when the knob is turned to ignite.
Check for 230 V (or local voltage) supply to the spark module.
Inspect ignition wires for breaks or loose connections at electrodes.
Replace the spark ignition module if it has power and switch input but no spark output.

Repair Difficulty

Medium 3/5

Required Part

Spark Ignition Module

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