I think it was a weak call for sure . I didn ' t however know that if you get shoved out of bounds you ' re not out of bounds . That is a really dumb rule <| sep |> No problem . Send me a PM if you ' re still interested after looking things up . <| sep |> It ' s just really sad to see this community turn super negative and see everyone gang up on one another . I ' ve been following this game for a long time now , and I ' ve seen the community not everyone of course go from these super supporting people , to just these impatient trollers . It ' s kinda sad and I hope that the developers don ' t feel discouraged by the words of the few <| sep |> I have a similar setup . It should always turn off the fan when a call for heat is made . The nest is not a problem , it is just doing the same thing any thermostat would do with the wiring . In your case it might have both the fan and heat wires hot , but that ' s not a problem . The board on the goodman unit will sense it and knows to follow the heat program and ignore the fan if both are hot at the same time . This is in the manual by the wayCall for heat starts with turning off the main fan , then engages the induced draft fan which feeds the flames , and checks to ensure the pressure switches see that the induced draft fan has started and is pushing air into the burner chamber . At that point it starts heating the element . When the thermocouple registers the element is hot the gas valve can be opened and gas is fed in . After a few seconds the second thermocouple needs to register heat from the burners . If it does , it believes the light off process has been executed properly and can start the main blower can again . It then checks to make sure the pressure switch detects the main blower is running . Then you are good to go . If the fan does not turn off before the burners kick on , something is probably wrong or something else humidifier ? is forcing the fan to run . That ' s not good for your system as you want the heat exchanger to get up to the right temperature quickly . Otherwise it can produce some nasty condensation in the exchanger that could cause it to have a shorter lifespan . Not something hugely shorter , but something to consider .