April 2019 21' footer.
When I turn on the furnace the AC fan goes on and it is too loud for at night, early morning etc. My 19' footer with mechanical thermostat did not do that. Is there a digital thermostat way to have furnace only?
Trailer: Escape#4, 2019 Escape21 DejaView pulled by 2014 Ram Hemi/8sp
Which thermostat do you have and which trailer, your avatar says 2015 E19 but your question refers to 2019 E21
Updating avatars is very helpful for those asking and those trying to help in the quest for help.
Sometimes life gets in the way of living......
With the digital thermostat you need to use the Mode button to set the fan mode to Auto. In Auto mode the AC fan will only run when the AC is running - in low or high mode it will run whenever the AC or furnace is running.
Here's Reace's video from the ETI YouTube channel: