Just got 2019 Chataeu 23-U
I would like to stop the fan when the AC unit reaches the desired temp. (Completely shut down with no noise.)
I did it with the last RV Dometic A/C unit.
Is it possible with the Coleman Mach 3 unit?
Well then, that explains it. Every roof-top controlled AC I've ever had worked as you describe (fan on all the time). Maybe they were all Colemans. That's the way we like it rather than having the AC noise cycling throughout the night so on out thermostat controlled ACs we have always put the fan in the "ON" position anyway. I think you're stuck with that.