A/C & Heat Control
Thought I had a thermostat problem, got a new one, same problem. Problem is, when I turn on the heat, the A/C fan kicks on too. Yes, I can switch off A/C fan via the breaker, but would rather have ...
Forum Discussion
MFL wrote:
When plugged into shore power, the AC fan will come on with furnace, if the fan setting is to low, or high. If set on auto, then only furnace fan comes on.
Jerry
Thanks! So simple, I feel pretty smart! LOL
I'm guessing the other problem led to this issue, that being, a black wire that connects to one of the 4 bundles under the controller box vibrated loose (no A/C) and thus connection between thermostat and controller went AWOL (error code A1) (fixed that this AM), and maybe thats what caused the thermostat to revert to low....or someone pushed the button by accident to switch off auto trying to get something to turn on...dunno! In 9 years, never had the A/C fan come on with furnace.
