topic Re: Hot air only in cooling mode. Gen 3 Nest on Conventional system. in Nest Thermostats

Hot air only in cooling mode. Gen 3 Nest on Conventional system.

Southpaw23 — Tue, 18 Oct 2022 03:26:33 GMT

Setting up two nests on two different residential air handlers. First one with just the Red, White, Yellow, Green, Blue wires works great.

Setting up nest #2 on another floor I had R,W,Y,G,B again, but it also included a W2, S1 and S2 as well as a C wire.

Nest app explained that the S1 and S2 were sensors that were not needed and the C wire was also removed without any issue.

The problem I have is when I tested COOLING, I got only hot air. When I switched to HEATING, it seems nothing happened (after waiting a few minutes). This is a Conventional system (no heat pump).

One other curiosity, I don't know why in this case, but the wire plugged into the "W" terminal was orange colored, and the white wire was in the "W2" terminal in the old box, but it seemed to work in that system. I followed the Next instructions to the letter. Photos attached. Thank you for any help!

Re: Hot air only in cooling mode. Gen 3 Nest on Conventional system.

Southpaw23 — Tue, 18 Oct 2022 14:46:32 GMT

Solved via support chat. Turns out despite my system's old wiring setup, I did in fact have a heat pump. In my case, this new wiring diagram solved it.

Re: Hot air only in cooling mode. Gen 3 Nest on Conventional system.

Markjosephp — Tue, 25 Oct 2022 18:40:32 GMT

Hello Southpaw23,

That's good to hear! I appreciate you posting and updating us on your efforts to address your concern finding a fix by contacting our chat support channel.

Please let us know if you have any other questions or concerns.

Best regards,

Mark

Re: Hot air only in cooling mode. Gen 3 Nest on Conventional system.

EdwardT — Fri, 28 Oct 2022 22:14:36 GMT

Hi Southpaw23,

I wanted to follow up and see if you are still in need of any help. Please let me know if you are still having any trouble from here, as I would be happy to take a closer look and assist you further.

Thanks,

Edward

Re: Hot air only in cooling mode. Gen 3 Nest on Conventional system.

Jhonleanmel — Mon, 31 Oct 2022 18:04:40 GMT

Hi folks,

Just one quick final check in here since activity has slowed down. We'll be locking the thread in the next 24 hours, but if you still need help, I would be happy to keep it open. If there's more we can do, just let me know.

Thanks,
Mel