The Whirlpool WP74010858 is an integral part for igniting the gas burners on your Whirlpool range. It's a spark ignition switch that sits underneath the burner control knob. When you turn the knob, the switch sends current to the spark igniter, which is a tiny mechanism placed near the burner head. This igniter subsequently generates a spark, which ignites the gas flowing from the burner, starting the cooking process.A malfunctioning spark ignition switch might disrupt the entire process by failing to provide current to the igniter. This leads to the annoying situation when you turn the knob but the burner does not light.
