What causes gas igniter to keep clicking when gas is off
Just solved this on the Kenmore model 911.33389 (same unit). Ignitors started with no one touching the cooktop. It has had a history of doing this and, this time, sparks were visible under the knob. Disassembled cooktop (don't forget to unplug and shut off the gas!). Performed "smell test" for burned electronics. Found smell in #3 ignitor switch. Disassembled and found worn, burned, and fried. Parts list was inside unit but had a typo for the "ignitor switch". Showed WB18T10240. Ordered that only to discover it was the transformer to ignitor wire harness set (no photo on website!). Wrong part... ugh! Dug deeper for the correct part #. It was WB18T10239 but it has been replaced with WB18T10344. Noted on some website that someone installed one and then the ignitor was NOT synchronized. Turns out, you can install WB18T10344 about three different ways. Mine was 22 degrees off vertical (different than original) and now my unit works perfectly! Also, install the new switch harness (if that's what you do) starting from the left front valve then clockwise. The original unit installed from the right front valve, then clockwise. Hope this helps.