I have a new Trane S9X2 furnace I purchased this winter. I want to make sure that everything is setup correctly now in the cooling season. I noticed that the furnace displays "HP1" when the AC is running. According to the manual, this is "Stage 1 Heat Pump" mode. As far as I know, my AC unit does not function as a heat pump. I expected it to display "CL1" for First Stage Cooling.
The AC appears to be working fine. Cold air is being blown out the vents so I'm reluctant to call the service company to take a look.
Is this even an issue? Or is there some minor wiring issue with my thermostat? I have an EcoBee thermostat if that helps.