Heat only system. The thermostat turns on the fan at the same time it calls for heat. This causes unheated air to flow until the heat exchanger has warmed up sufficiently. Kind of annoying if you are near a vent and feel a cool breeze for 20-30 seconds in winter before you get heat. Any one else…

I read where someone else having this issue and they went back through the set up and changed one of the settings. Originally they chose gas heat and then forced air but they said they changed the forced air setting to the other option and that stopped it from happening. Sorry its kinda vague but mi…

I’ll have to try redoing the setup, but I think if I tell the thermostat I have a system without a fan I will lose the use of running the fan only from the thermostat. Thanks!

Re-did the setup and chose gas fuel and then other under type, not forced air. Tested and ran like it should (waited to heat up before the fan comes on, furnace controlling the fan not the thermostat). But I lost the ability to control the fan manually. The option is still there in the app to tur…

I didn’t have this issue but I need have to hit the “flip heat and cool” button from the app. It’s cold outside and the “heat” was blowing cold.

I do not have that button…mine is heat is on when the ac is suppose to be on

Settings >> Advanced >> Swap Heat and Cool

I had the same problem. When I turned on my thermostat the blower would kick in immediately, blowing cold air for a minute. Very annoying. Also, it was using the high speed mode of my blower, which is usually reserved for A/C. The solution? I simply disconnected the G wire in my thermostat, and the…

Thermostat calls for heat and turns on fan simultaneously

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stevebergmann December 29, 2020, 9:44pm 4

I just found this thread about the same issue and it seems like they are saying it’s the G wire like you mentioned. Maybe someone else will have more input, or ran into this and fixed it another way. Mine is all electric heat pump so I didn’t have the issue.

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Thermostat calls for heat and turns on fan simultaneously

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