I have a heat pump and a natural gas furnace, my original thermostat had the white wire going to “aux-e”. When setting up in the app, it has “aux” or “E”, which is the correct option to choose for the furnace heat?
I have a heat pump and a natural gas furnace, my original thermostat had the white wire going to “aux-e”. When setting up in the app, it has “aux” or “E”, which is the correct option to choose for the furnace heat?