While removing the knobs for cleaning on my oven range, it started the electronic ignition for the burners (clicking continuously) like one of the knobs was in the on position. I replaced the knobs and made sure all of them were off. The clicking continued. I finally unplugged and replugged it back in. Still was trying to ignite. It seems like something simple. Does anyone have any ideas? It is a propane range with electronic ignition and four burners.