Help no heat
Our heat won't come on. The AC cooling side on thermostat works but the heat side won't come on. At first the #1 unit was all that would work on cooling and now the # 2 unit will work on cooling also,...
Forum Discussion
I won't say or can't that it is your problem but the sail switch causes these kinds of problems. It's in the thermostat control on ours. I believe. I say believe because someone replaced it twice for us but I wasn't there.
