Re: Air conditioner comes on with furnace
I know that this thread is several months old but since this happened to me, later, and there was no solution mentioned here I thought I would put one in, or at least what solved it for me.
I turned the heat on and both the AC and heat came on. It took a call to Dometic but I found out that by "resetting" the thermostat the problem went away. Depending upon which thermostat you have the owners manual will give you the reset routine.