topic Re: Wiring nest...not detecting c wire already installed in Nest Thermostats

Wiring nest...not detecting c wire already installed

Pat12 — Sun, 15 Jan 2023 00:35:02 GMT

Installed the c wire nest connector, showing all wires are live, app still saying c wire not detected ?? Won't let me continue set up...help

Re: Wiring nest...not detecting c wire already installed

Houptee — Sun, 15 Jan 2023 04:53:59 GMT

I think you have to get the power connector to be detected not the c wire because you dont actually have a c wire connected to the Nest when you use the power connector.

Watch this video

https://youtu.be/xlx2Um6D1Z8

Re: Wiring nest...not detecting c wire already installed

Pat12 — Sun, 15 Jan 2023 14:45:05 GMT

24 Volt Transformer, C Wire Adapter Thermostat, Compatible with Nest, Ecobee, Honeywell Smart Thermostat, Nest Hello, Ring Doorbell Power Supply (23ft Cable)

This is what I purchased because Nest was working at Thermostat but kept going off line..did I get the wrong thing and now need the connector? Thank you for your help

Re: Wiring nest...not detecting c wire already installed

Houptee — Sun, 15 Jan 2023 15:22:21 GMT

Oh ok I thought you had the little power adapter.

So if you are using a wall plug in transformer you have to put one wire in R with the thermostat wire also in R so 2 wires will be together in the R, and the other wire from wall transformer in C.

Post a pic of what wires you have installed.

Watch this video he explains it.

https://youtu.be/yi5kfn3bmEk

Re: Wiring nest...not detecting c wire already installed

Markjosephp — Tue, 17 Jan 2023 20:41:29 GMT

Hello folks,

I wanted to stop by and see how I could help.

Thanks for guiding the customer. @Houptee.

@Pat12, I appreciate you sharing how you installed a 24V additional power source to your thermostat. How's it going with the installation? Still need our help? Please let us know if you need more help so we can assist you right away.

Regards,

Mark

Re: Wiring nest...not detecting c wire already installed

Pat12 — Tue, 17 Jan 2023 20:52:04 GMT

We r still working on it but will let you Both now how it works out for sure, thanks!

Re: Wiring nest...not detecting c wire already installed

Markjosephp — Tue, 17 Jan 2023 21:07:26 GMT

Hi Pat12,

Sounds great! Thanks for informing us that you're trying to make it work. If anything comes up, don't hesitate to give us a shout, as we would be glad to know what the result would be.

Regards,

Mark

Re: Wiring nest...not detecting c wire already installed

Pat12 — Fri, 20 Jan 2023 01:58:30 GMT

Hi we finally got it to work with the app following your guide. I took a pic so u can see, a problem I'm having is now it says it's 78 in the house which is not right. I have another thermometer saying it's 73, heat set at 68...I'm worried the heat won't ever go on if its not working right? My hubs is an electrician so we know it's wired right...uggg

Re: Wiring nest...not detecting c wire already installed

Pat12 — Fri, 20 Jan 2023 02:00:19 GMT

Here's the pic what do you think? Tia

Re: Wiring nest...not detecting c wire already installed

Pat12 — Fri, 20 Jan 2023 02:04:03 GMT

We could not fit both wires into R so he spliced them together and put 1 wire in ?

Re: Wiring nest...not detecting c wire already installed

Houptee — Fri, 20 Jan 2023 03:40:03 GMT

I don't see any pics showing up in your posts. If you do a power test it should show the Vin and Lin reading to make sure you are getting enough power to R and C. If this is the Nest non learning model go to the nest and hit settings equipment power status. You should see Vin above 24v and report back what the other readings say.

Re: Wiring nest...not detecting c wire already installed

Pat12 — Sat, 21 Jan 2023 15:28:46 GMT

Hi guys, everything working OK with app and thermostat, however, inside thermostat is reading about 8 degrees above the actual temp in house ..I did read it takes a few days to adjust but this morning it was correct ? I tried to post a pic but doesn't seem to be coming thru? Any suggestions or just let it ride? At this point, I'm not sure I want to keep it..I installed one at our beach( air & heating there) and it's working perfect there. At home we only have oil heat, radiators? Thanks

Re: Wiring nest...not detecting c wire already installed

Markjosephp — Wed, 08 Feb 2023 20:18:19 GMT

Hello there,

I know it's been a while, but I wanted to ensure that everything was covered here.

I appreciate you keeping us in the loop, @Pat12. It appears your thermostat is experiencing inconsistent temperature readouts. To confirm, what type of Nest Thermostat do you have? Also, please make sure the software version is up-to-date. I'll wait for your response.

Regards,

Mark

Re: Wiring nest...not detecting c wire already installed

Jake — Mon, 13 Feb 2023 20:22:09 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: Wiring nest...not detecting c wire already installed

Jake — Tue, 14 Feb 2023 22:01:03 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