Printed circuit board with mounted electronic components

Spark module and electrodes (gas cooktop)

The spark module makes a high-voltage pulse when an igniter switch on a valve stem closes. Constant clicking is usually moisture or a stuck switch; no spark is a cracked electrode, bad wire, or module.

Cross-checked ~30 min moderateBrands: All

Before you start

Unplug before touching electrodes or wires: the spark is high voltage
Gas valve work is blocked; refer to a licensed gas technician
Smell gas: stop, leave, call the gas utility

Diagnostic steps

Unlock all 5 steps with expected values

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

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