Michael B San Diego , CA May 13, 2016 Thermador range oven spark igniter didn't work First I checked both spark igniters (range has two ovens) by testing them on the oven that did work. Both were good. I then checked the spark igniter wiring & it was good. At this point I contacted Appliance Parts Pros to ask which spark module I should order, the problem was that there wasn't a model number on the appliance. After speaking to the rep I ordered the ignition devise pictured above. Installed it and it worked! 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours