Why do my cooktop's spark igniters keep clicking?

A stuck burner spark igniter switch can cause a constant ticking or clicking noise on the cooktop. The igniter switches can get wet and short out when you clean the cooktop with water, and the ticking sometimes stops once the switches dry. If the spark igniter still won't stop clicking after the switches are completely dry, replace the failed burner switch.

Some cooktops have a spark module that reignites the burner if a burner flame goes out with that burner's gas valve still open. If your cooktop has this type of burner reignition system and the igniters click constantly with all active burner flames lit, you may need to replace the spark module because it isn't detecting the burner flames properly or a reignition relay on the spark module is stuck.