topic Re: Nest thermostat cycling outside condenser in Nest Thermostats

Nest thermostat cycling outside condenser

Charlton — Sun, 19 Feb 2023 18:15:59 GMT

I just installed a nest 3rd Gen learning thermostat. This is installed on the top floor which is part of a zone heating system.
I connected to Y,G, W and Rh. Everything seems to install well, but I realized that my outside condenser is constantly running for 30 seconds every few minutes.
Please advise.

Re: Nest thermostat cycling outside condenser

Patrick_Caezza — Mon, 20 Feb 2023 04:17:08 GMT

Can you post a picture of the zone controller wiring?

If you still have it, can you post a picture of the original thermostat's wiring?

I see you don't have a C wire connected and that type of cycling can be caused by it not being installed.

Re: Nest thermostat cycling outside condenser

Charlton — Mon, 20 Feb 2023 15:22:34 GMT

Hi please see images

Re: Nest thermostat cycling outside condenser

Markjosephp — Mon, 27 Feb 2023 15:50:05 GMT

Hi everyone,

Thanks for the input, @Patrick_Caezza.

@Charlton, thanks for the photos of your system configuration. A power-related issue might be the reason why you're experiencing a short cycle. As mentioned above, installing a C-wire might help provide power. Please take a look at this article and let us know if you need more help.

Regards,

Mark

Re: Nest thermostat cycling outside condenser

Vladut — Thu, 02 Mar 2023 15:51:55 GMT

Hi there, just checking in with you. Did you manage to check the last message?

Re: Nest thermostat cycling outside condenser

Charlton — Sat, 04 Mar 2023 16:48:16 GMT

Yes I did, but have not had time to figure how to install a c wire. Not sure what to do because of the hz311 board

Re: Nest thermostat cycling outside condenser

Markjosephp — Sat, 04 Mar 2023 23:29:39 GMT

Hello Charlton,

I understand installing a common wire can be confusing for your zoning board. Installing a Nest Power Connector would help. Here's a quick reference on how it works as an alternative for C wire. Also, if you need help from a professional installer, you can schedule an appointment and get pricing from OnTech, our pro installation partner.

Feel free to let us know if you have more questions in mind.

Regards,

Mark

Re: Nest thermostat cycling outside condenser

Jake — Wed, 08 Mar 2023 18:45:56 GMT

Hey there,

I wanted to check in and see if you managed to see Mark's post. Please let me know if you have any questions from here. I would be happy to assist, and make sure you are good to go.

Best regards,
Jake

Re: Nest thermostat cycling outside condenser

Jake — Fri, 10 Mar 2023 18:13:14 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: Nest thermostat cycling outside condenser

Charlton — Fri, 10 Mar 2023 18:14:34 GMT

Thanks Jake, yes you can lock it. I haven’t had time to look into this. But will start something new if I encounter something later on. Thanks!

Re: Nest thermostat cycling outside condenser

Jake — Mon, 13 Mar 2023 17:51:50 GMT

Hey there,

I just wanted to let you know that I am going to go ahead and lock the thread. Please feel free to create a new post at any time if you are running into any further issues, as we are always here to help.

Best regards,

Jake