ok i just wanna get some feed back before i dig into this problem and see if anyone has had this problem or can give me an idea on what should be checked, the problem im haveing is ill have heat when i got the controller set to 85, but when i turn it down to 84 or lower the heat goes away and blows cold, and it gets a lil toasty in there at 85 all the time, so any time i try to turn the heat down alil (anything under 85) it blows cold. Any help would be great Thanks -Matt