GE JGP622ER1WH gas cooktop. Second time a burner valve has locked up so now I've got to fix it before I run out of burners altogether. Something's going on...it's not gummed up or it would yield to gentle persuasion: it's locked tight, as in mechanically, and it did so instantly...no period of gummy, ever-more-reluctant operation.
Plus there's an electrical connection to the valve that has no place being there. It's not the ignitor, it's a wire that goes directly to the burner control valve. The ignitor is way off by the burner head and it works fine, or would if the knob would turn.
I'm suspecting a safety feature. (Ain't it always the safety features that cause the grief?) Is there a solenoid in the valve that locks the shaft if the stove decides it's unhappy that particular day?
No doubt I will figure it out once I get into the electrical box that the valve wires go into but I bet somebody here knows. Enlighten me, please.