Coleman Mach 3 Black AC fan runs all the time

Macaroon · 05-01-2019, 02:54 PM

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?

blw2 · 05-02-2019, 03:14 PM

mine has the auto/on option switch right on the thermostat

**16ACE27** · 05-02-2019, 04:18 PM

**16ACE27** · 05-03-2019, 01:15 PM

Sorry, Mach thermostat below. Is this what you have?

Macaroon · 05-03-2019, 01:22 PM

I have the roof unit, no thermostat, only options are fan (hi or low), or ac with fan (hi or low).
Thanks for your reply!

**16ACE27** · 05-03-2019, 01:29 PM

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.

Macaroon · 05-03-2019, 01:44 PM

Thanks again for your input! I was able to quiet my last AC unit, a "Dometic" that had the same problem. I just wrote to Coleman, maybe they can help with this one.

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