topic Re: New Install - Only blowing cold air when I'm trying to run heat in Nest Thermostats

New Install - Only blowing cold air when I'm trying to run heat

LynDeeT — Mon, 14 Nov 2022 19:18:52 GMT

Hi,

I have read over most of the answers to this. My system is fairly new and should have been compatible. Did I cross a wire? I am wondering if I should try switching the Red to RC from RH. The original thermostat may have had a small jumper? Also,

my Orange, Brown & Black wires were not connected to anything on my original. Should I plug those in somewhere? I did try the switch on the Next from O to B, but no difference in heat. Help! It's cold here in Oregon.

Re: New Install - Only blowing cold air when I'm trying to run heat

kiriti — Mon, 14 Nov 2022 23:06:48 GMT

The White wire usually goes into the W1 slot for heat. The brown wire is usually the one which goes into o/b

Re: New Install - Only blowing cold air when I'm trying to run heat

Markjosephp — Fri, 18 Nov 2022 18:24:01 GMT

Hello kiriti,

I'm sorry to hear that your heat won't activate. It's never ideal to blow cold air when calling for heat. I'd be happy to take a look into this for you.

It appears that you have a conventional type of system with cool and heat only. On your thermostat, please move the white wire to the W1 terminal. Make sure all wires are still properly connected, and restart the thermostat once it is ready.

Please note: turn off the power to your HVAC system from the breaker before touching the wires.

Keep me posted on how it goes.

Best regards,
Mark

Re: New Install - Only blowing cold air when I'm trying to run heat

Jhonleanmel — Mon, 21 Nov 2022 18:44:56 GMT

Hi folks,

Chiming in to see if you still need assistance with this. Let us know if you have additional questions ― we'd love to help.

Best,
Mel

Re: New Install - Only blowing cold air when I'm trying to run heat

Jhonleanmel — Tue, 22 Nov 2022 19:03:58 GMT

Hi everyone,

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,
Mel

Re: New Install - Only blowing cold air when I'm trying to run heat

kiriti — Tue, 22 Nov 2022 22:26:57 GMT

@LynDeeThere is the wiring diagram for your system.

Re: New Install - Only blowing cold air when I'm trying to run heat

Jhonleanmel — Wed, 23 Nov 2022 00:37:59 GMT

Hi kiriti,

Thanks for sharing this photo for @LynDeeT's reference. This helps a lot.

Best,

Mel

Re: New Install - Only blowing cold air when I'm trying to run heat

EdwardT — Sat, 26 Nov 2022 00:46:18 GMT

Hi folks,

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: New Install - Only blowing cold air when I'm trying to run heat

Jake — Thu, 01 Dec 2022 19:10:15 GMT

Hey there,

I wanted to check in, and let you know that I will be locking the thread in 24 hours.

Best regards,

Jake

Re: New Install - Only blowing cold air when I'm trying to run heat

LynDeeT — Thu, 01 Dec 2022 22:35:34 GMT

I resolved this issue. Thanks everyone.

Re: New Install - Only blowing cold air when I'm trying to run heat

Jake — Mon, 05 Dec 2022 19:54:55 GMT

Hey there,

I am glad to hear you were able to resolve the issue, and everything is good to go from here. I am going to keep the thread open for 24 hours incase you have any questions from here.

Best regards,

Jake