topic Re: Picture for thermo compatibility in Nest Thermostats

Picture for thermo compatibility

Twizzle — Wed, 26 Apr 2023 19:32:12 GMT

I was told to post a pic - my thermo system uses G, W, Y, C, R. My thermostat also uses the Rh and Rc connection. Help please.

Re: Picture for thermo compatibility

CoolingWizard — Wed, 26 Apr 2023 21:43:17 GMT

You actually have two cables that are terminating on that furnace control board. One of them goes from that control board to the outdoor compressor condenser unit. And the second one comes from your thermostat. Your thermostat wires are RED on R, YELLOW is on Y, WHITE on W, and GREEN on G. You have no COMMON wire going to your thermostat.

AC Cooling Wizard

Re: Picture for thermo compatibility

Patrick_Caezza — Wed, 26 Apr 2023 23:05:56 GMT

A picture of your current thermostat wiring would be better.

Give this wiring a try.

Green - G to G

White - W to W1 or W

Yellow - Y to Y1 or Y

Red - R to Rc or R (jumpers are not needed)

The "or" is for the Google Nest Thermostat wiring

I would strongly suggest adding a C wire which can easily be done if there is a spare wire in the thermostat cable. Just connect it to the C terminal on each end.

You can use the Google Nest Power Connector to create a C wire if there isn't a spare wire.

Re: Picture for thermo compatibility

Jake — Mon, 01 May 2023 18:24:13 GMT

Hey Twizzle,

Thanks for the helpful replies CoolingWizard, and Patrick_Caezza.

I wanted to follow up and see if I could be 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.

Best regards,
Jake

Re: Picture for thermo compatibility

Jake — Thu, 04 May 2023 17:59:12 GMT

Hi Twizzle,

I wanted to check in and see if you are still in need of any help. Please let me know, as I would be happy to assist, and answer any questions you may have.

Best regards,
Jake

Re: Picture for thermo compatibility

Jake — Fri, 05 May 2023 16:59:32 GMT

Hey there,

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

Best regards,

Jake