topic Re: Compatability and correct wiring in Nest Thermostats

Compatability and correct wiring

Lever3000 — Thu, 15 Dec 2022 14:31:42 GMT

Having difficulty with nest telling me where to put the wires. Here is my old thermostat:

We have a heat exchanger for the AC on the outside of the house. Does this mean I have a heat pump? Thanks

Re: Compatability and correct wiring

EdwardT — Wed, 21 Dec 2022 00:45:02 GMT

Hi Lever3000,

Thanks for reaching out. I'm sorry to hear that you're having an issue with setting up your Nest Thermostat. Could you tell us the make and model of your outside unit so we can take a closer look?

Thanks,

Edward

Re: Compatability and correct wiring

Lever3000 — Wed, 21 Dec 2022 01:37:07 GMT

Here is the information on my outside unit. Thanks for your help!

Outside unit

Re: Compatability and correct wiring

EdwardT — Wed, 21 Dec 2022 02:26:05 GMT

Hi Lever3000,

Thanks for the response. Upon checking the model of your outside unit, it is indeed a heat pump. I would suggest checking the control board of your HVAC system to check the B wire on your current thermostat. In some cases, it is a C wire but I highly recommend checking the control board to make sure.

Thanks,

Edward

Re: Compatability and correct wiring

Lever3000 — Wed, 21 Dec 2022 03:16:58 GMT

Here are the connections to my control board. Tanks again

Control board

Re: Compatability and correct wiring

EdwardT — Thu, 22 Dec 2022 02:39:59 GMT

Hi Lever3000,

Thanks for sharing the photo. It looks like the blue wire is connected to the C terminal on your board so I'd suggest connecting it to the C terminal on your Nest Thermostat.

Thanks,

Edward

Re: Compatability and correct wiring

Markjosephp — Sun, 25 Dec 2022 20:34:06 GMT

Hello there,

Thanks for helping, Edward.

@Lever3000, I'm checking back in to see how it's going. Have you had a chance to install your Nest Thermostat? Let us know if you need more help, so we can assist you right away.

Regards,

Mark

Re: Compatability and correct wiring

Lever3000 — Mon, 26 Dec 2022 22:11:09 GMT

That did the trick. It is up and running smoothly so far. Thanks again

Re: Compatability and correct wiring

Markjosephp — Mon, 26 Dec 2022 22:55:50 GMT

Hello Lever3000,

Sounds great! I'm glad to hear that it was sorted out. It looks like we have come to a solution, so I'm going to lock this thread for 24 hours. If you have any other concerns or questions, please feel free to create a new thread.

Regards,

Mark