Ok this is whats up. I do remodeling and we were running a duct to a new room just doing the duct work no wiring or anything technical. So the next day the homeowners said when they went to bed everything was fine in the morning they awoke to their thermostat being completely off. So i bought a new thermostat and still nothing help would be appreciated... Is there away to hot wire it to see if any juice is coming from the attic... Thank You.