Good afternoon. I was looking at a friends TT that has an issue with the AC coming on when heat is being called for. In the past only the heat would come on but this year it is turning on the AC fan. It is I believe a 4 button Dometic thermostat. What would cause this? I know some units turn on the AC fan to circulate but he claims it never did this before this year. Is there a factory reset or a way to not turn on the fan? I have not found the manual for this unit yet as I only had a few minutes to look at it and will investigate further this weekend.
Thank you.
Gary
