Element Haliant 12 Triple won't heat

Brand:GE
Model Number:PS960SL5SS
Main Symptom:Triple burner no heat on any section
What happens & when:just doesn’t heat, but becomes slightly warm to touch

Error Code (if any):no error code
Parts or tests already tried:Removed burner, did continuity tests on each of 3 heating coils. All fine. No breaks in heating elements. The red light indicating warm surface stays on continually. Stove surface is warm, but not too hot to touch. Could it be the thermostat? A switch?
Photos / video link: