Definition
A spark module (also called an electronic ignition module or spark generator) is the small electronic box on a gas range or cooktop that generates the high-voltage sparks at each burner igniter. When you turn a burner knob, the spark module fires a continuous series of clicks at the corresponding igniter electrode, lighting the gas as it flows. When the spark module fails, one or more burners will not click or all burners spark constantly.
What It Does
Inside the module is a step-up transformer that takes 120 V AC and pulses it into thousands of volts on the output to the igniter electrodes. A microswitch under the burner knob tells the module which burner to spark. The module produces about 2–4 sparks per second at the igniter tip, jumping a gap to ground and lighting the gas. Modern ranges use a single shared module that fires the correct igniter based on which knob is rotated.
Where It’s Located
Behind the backsplash or behind the front panel of the range, often mounted to the side wall of the cooktop. Brand examples: Whirlpool/KitchenAid W10721860; GE WB13K10043; Samsung NX series uses DG96-00269A; LG MEE61841401.
Common Failure Signs
- One burner clicks but does not light, while others light fine
- All burners click continuously even after the burner lights
- Burners click continuously when no knob is turned
- No clicking at all when turning any knob
- Spark sometimes fires but is weak or intermittent
Typical Replacement Cost
$170–$280 including parts and labor. The module itself is $50–$140 in parts. Clean ignition surfaces and dry igniter electrodes before replacing the module — a wet igniter from a recent boil-over will mimic module failure.
DIY vs Pro
Moderate DIY if you are comfortable working with gas appliances. The module itself is plug-in. Diagnosing whether the module or the igniter electrode is at fault requires swapping in known-good parts. Book oven and stove repair.
Need this part replaced? Call (720) 447-8577 for same-day gas range repair in the Denver metro area.