I am a new homeowner and have tried to set up my new nest thermostat. Heating and the fan work great but I cannot get the cooling to work or even show up. I think it is something to do with my wiring but really have no clue. Any help would be greatly appreciated!
I am having the same issue, cooling is not showing up as an option. When I searched for help it said to check the Y1 wire connection. I only have a red wire , which I believe, is a duel wire for heat and cooling.