dougrainer, The inside trailer and outside temp was way less than 110 deg, probably around 75 in San Diego. Also, the unit is a 2018 Winnebago Minnie model, so the tstat is a new. I am glad to hear that you don't have any problems, but other people have posted reviews that have the same problem as me. To be specific, I can press the power button ONE time, and the tstat will cycle from fan to cool to furnace and then off. When I finally do get the unit to stay on cool, if I try to adjust the temperature up or down, one press of the arrow cycles the unit from cool, to furnace then off. Sometimes it switches from F to C hitting one button rather than press both arrows simultaneously. Is it possible that the control board is causing the issue rather than the tstat?