I seem to have "developed" a problem tonight. I just removed my old manual thermo and labeled the wiring accordingly. It looked the heat hot came into a spot labeled "4". Then it was jumpered to Rc. So when I hooked up the Hunter programmable 44360, there was already a jumper between Rc and Rh. So I hooked into Rh with what was the "4" and left it jumpered. It looked like everything went all right, switches in back correct, other wires correct, etc. I programmed it and when it kicked in, the heat (gas furnace - Armstrong) AND my outside central air unit ran. To remedy it, I unhooked the jumper to the Rc for now.

My longwinded questions are; how did I hook this up wrong, is there likely something wrong with the new Hunter, and MOST importantly, will there be anything screwed up on my AC unit when it ran for 13 minutes in 25F degree weather.

Thank you in advance. Mark