Gas cooktop igniters click non-stop

The spark module only fires when a burner spark switch feeds it power, so constant clicking almost always means a wet or shorted switch. If clicking continues with the switches disconnected, the module is stuck. Clicking only after the burner lights points to the electrode, burner cap or ground/polarity instead.

Cross-checked ~45 min moderateBrands: All

Before you start

If you smell gas, stop: do not operate switches, ventilate, leave and call the gas utility from outside
Unplug the range before opening the cooktop or handling switch wiring
Do not loosen any gas fitting; spark switches clip onto valve stems

Diagnostic steps

Unlock all 6 steps with expected values

Full library + AI assistant for $34.90, one time.

Get lifetime access

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.

More ranges & ovens guides

Component test · Range / Oven

How to test an oven RTD temperature sensor

Most electronic ovens use a platinum RTD probe, which works the opposite way to an NTC: resistance rises with heat. Many common sensors read about 1,080 Ω at room temperature and climb roughly 2 Ω per °F.

6 steps ~20 mineasy

Component test · Range / Oven

How to test an oven bake or broil element

Bake and broil elements are 240 V resistance heaters. A good one reads somewhere in the teens to about 40 Ω depending on wattage, and never shows continuity to its metal sheath.

6 steps ~20 mineasy

Component test · Range / Oven

How to test an infinite switch (electric surface element)

An infinite switch cycles a surface element on and off to set the heat level. Test the two line-to-element contact pairs on high and off. Also test the element itself before replacing the switch.

6 steps ~20 mineasy