Have HVAC Questions? Ask an HVAC Expert for Answers
Look at this screen shot please and tell me if the number shown in red in this screen shot is for *humidity or outside air temperature.
I also need the brand and model number of your heat pump that sits outside.
It will also help me give you a much better answer if you tell me why you want the heat pump to shut off at 50F outside air temperature instead of the usual 30 to 35F.
We can go from there