Roof AC - Compressor on, fan is not

dlplaia wrote:
We have a brand new Dometic AC, replaced because of the same problem (see below) plus non-cold air.

The AC is in Colorado 5th wheel; wall thermostat with remote; ducted in ceiling. When we turn the AC on, the compressor comes on but the fan doesn't. We've tried every setting with fan speeds, temps, etc. Every once in a while we can finally get it working together.

We figure the problem to either be in the controller box (that the AC plugs into) or the thermostat.

We'd love to hear input from you knowledgeable RV folks!

Thanks!
Debbie

Is there a way to "reset" the thermostat? There's a chance the thermostat may use some kind of firmware that may have become corrupted. A reset or reload may clear the problem---much like rebooting your phone or computer.