How much above room temp did you set the T-stat?? If more than approx 3 degrees above, the Furnace will kick on. To keep the Heat Pump on you have to slowly raise the T-stat keeping it no more the approx 3 degrees above room temp.
Michelle & Ann
2018 Chevy 3500HD Crew Cab High Country DRW, D/A, 2016 RW39MB, Dual ACs, Auto Level, Auto Sat Dish, Stack W/D, King Sleep #, 17.5" Sailuns w/Disc, MORryde IS & Pin, Comfort Ride Hitch, 5.5 Onan, Res Fridge & Induction Cook Top