Geopro 19FBS AC issue

[JJBinAustin]

The 13,500 BTU Coleman AC on my 2018 Geopro 19FBS runs great for 3-4 hours but then shuts down, still humming but no longer blowing or cooling. Took it to dealer, who said nothing’s wrong with the unit but the problem is it’s too much AC for the small space, causing the coils to over-cool and freeze up. He said the solution is to run it set a little off of the coldest setting. No thermostat— just a 180-degree cold-to-hot (blue-to-red) turning knob. He said setting it turned an eighth or quarter inch away from the coolest position will solve the problem while still cooling enough. Sound legit? Anyone else have this issue? Thanks.

[NJKris]

No, mine does not have this issue. Unless ambient temperature is too low, I can imagine freeze up occurring. I doubt this is the case in TX. If it is on max cold too long I imagine it could happen. Here is an article discussing this. https://rv52.com/why-does-my-rv-ac-freeze-up/ BTW, my brand new out of the box trailer had a bad A/C unit. The first time I tried it (was too cold to test when i picked it up) it didn't blow cold air. I suspect there was a leak in the system and the refrigerant leaked out between time I bought it and time I used it months later. Air Excel replaced the unit with a brand new one under warranty. I suggest contacting Air Excel directly for advice, dealer sounds clueless as usual.