topic Re: Nest Thermostat emitting heat when ac is on in Nest Thermostats

Nest Thermostat emitting heat when ac is on

AgUsr — Wed, 05 Feb 2025 01:41:46 GMT

I have a nest thermostat 3rd gen. It emits heat when AC is on. When I put heat it emits heat and works fine.

old Thermostat wiring & Nest Thermostat 3rd gen - https://imgur.com/a/dws2M8w

Patrick_Caezza — Wed, 05 Feb 2025 04:28:19 GMT

Any idea if you have a heat pump?

I can't read what the terminal the orange wires were connected to on the original thermostat.

AgUsr — Wed, 05 Feb 2025 12:28:15 GMT

@Patrick_Caezza yes. I have heat pump.

Should I try moving w2 to OB?

Patrick_Caezza — Thu, 06 Feb 2025 06:16:12 GMT

If you can access the furnace/air handler, look there and see where the orange wire is connected.

If it is a heat pump, moving it won't hurt anything.

AgUsr — Thu, 06 Feb 2025 10:53:54 GMT

@Patrick_Caezza I switched it to OB and it worked!! Thank you very much.