I am on my second Heat/AC control unit. The lights dont come on, no blower, nothing. Then all of a sudden it lights up and blows very well. I figured it was the head unit so I replaced that and it was all fine for about 3 months. Then the problem returned again. Is it the Automatic Temperature Control gizmo? I have the newer head unit, not the one with the levers.
Thoughts?
Gonzo