Wired, connected, heating, cooling… but the fan won’t stop running!

[galthouse9]

Hello! We recently moved into a house with a York heat pump (model YHJD30S41S4A) and existing Nest Thermostat. We did a factory reset of the thermostat to reassign the account and Wi-Fi. Great!

However, while heat produces heat and cool produces cool, the fan runs constantly… ALWAYS. The fan doesn’t shutoff, even with the Nest set to ‘Off’ and without a schedule set for the fan.

The previous owner claims it all worked perfectly for them (just weeks ago). Any ideas…?

Thanks, all 🙂

Greg

[Houptee]

The green wire is for the fan.

You can try to remove G wire it at the nest and turn system back on see if fan still runs without the G wire connected. If it still runs go to the air handler and check if any wires are touching the G wire where they connect to the terminal strip screws.

If everything looks normal at the system end take pics of the control board etc.

[Patrick_Caezza]

Do you have a picture of the original thermostat's wiring that you can post here?

[Jeff]

Hi galthouse9,

I just wanted to jump in real fast to see if you saw Patrick_Caezza's reply and to see if you still needed some help on this or if you were able to get it sorted out. If you are still needing some help, just let us know and we'll be happy to continue helping.

Thanks,
Jeff

[Jeff]

Hey galthouse9,

I just wanted to follow up once more to see if you were still needing some help here. If so, just let us know.

Thanks,
Jeff

[EdwardT]

Hi galthouse9,

I'm just checking in to make sure that you've seen our response. Please let us know if you have any other questions or concerns as I will be locking this in 24 hours.

Thanks,

Edward