Forum Discussion

drusher's avatar
drusher
Explorer
Nov 10, 2013

How to fix Dometic Comfort Control thermostat problems

Here is how to fix the most common dometic thermostat problems for the 4 and 5 button Comfort Control thermostats. Dometic support is awful and there are a lot of folks out there spending large sums o...
Class A
dougrainer's avatar
dougrainer
Nomad
Sep 17, 2017
Cwest17 wrote:
I have a 2016 Grand Design Imagine. When I turn the furnace on, the air conditioner comes on also so both hot and cold air is blowing. Any suggestions?


I doubt cold air is blowing. In the Tstat settings on a Dometic 12 button or Zone Control tstat. You MUST select AUTO for Fan speed selection to prevent the AC blower from coming ON. If the Fan is set to Lo-Med-Hi the AC blower will run when Furnace is ON. Doug

About Motorhome Group

38,707 PostsLatest Activity: Feb 20, 2025