[travelin texans]

I've had several RVs & to date have never had one that "auto" would change from ac to heat. They've all been strictly the fan either "hi", "low" or "auto" with "hi/lo" the fan runs constantly & "auto" it only runs if ac or heat pump kicks on.
Come to think of it, never had a residential thermostat that would automatically switch from heat to cool, always had to switch it manually to either heat or cool. Even on these the fan switch has "on" or "auto".