I just set up 3 nest thermostats 3rd generation. My house has propane and forced air, which is what I selected on the thermostats at set up. All wires show as connected and working properly. I have the heat running and set to 74 but cold air is blowing out and the temperature in the room continues to drop even when I increase the heat temp. I have no idea what I am doing wrong. I’ve removed the thermostats and put my Honeywell back on and the heat immediately starts working again. Is this a settings issue? I keep seeing posts about heat pumps and O/B buttons but I have propane and forced air so I’m not even seeing a heat pump option. Please help before I have to return all 3!
