We have a Jenn-Air Gas-Electric Grill-Range Model SEG196 that is about 15 years old. It makes a sporadic rapid clicking noise coming from behind the control panel. At times it sounds like a timer rapidly winding down but the panel has a digital clock. Unable to stop it when it happens, and unable to duplicate or cause the sound. It happens several times a week but we are not always home to tell. Then there were periods of time when we didn't hear it at all