I too have the Digital Heat/AC control for the cabin hvac on our 2006 Camelot. Likewise in order to get heat must set it to at least 80 degrees and it takes what seems like forever before it puts out heat. Same with the AC side, have to crank it down to 60 or 65 to get it to cool down. It also takes a long time to start cooling. It might as well be a toggle switch, one way being hot and the other way being cool.
Bob 2006 Monaco Camelot 40PDQ
US Navy Carrier Battlegroup 1959/1965
Winters in Florida, Summers in Blue Ridge Mountains