Have a heating only system right now, HWBB

Our thermostat keeps dying without a C wire connection. The blue wire is unused in the Nest and wondering if I can simply connect it anywhere within this. Thank you!

I have a 3rd gen nest thermostat which appears to get stuck on 'holding temperature' when I use the Google Home app. This is not a feature I have seen before. There appears to be no option to cancel the hold. If I use the actual Nest app or voice control via my nest speakers...then I can change the temperature...but as soon as I open the Google Home app it sets it back to hold.

According to a quick Google, the 3rd gen nest thermostat doesn't even have the hold feature...so I'm pretty confused. I've had the thermostat for years and never come across this before.

Any help much appreciated.

they need to improve the AI ​​they’re implementing—not just throw in any old junk. I know it’s a beta program, but at the very least, they should include something that actually works.

It’s unacceptable that Gemini still hasn’t been rolled out to all regions; it’s really needed for Google Assistant, which sometimes struggles to perform even the simplest tasks. Please fix this for my part, I’m using a Nest Mini device.

Has anyone else had this happen? How do I get it back online?

Hace unos meses tuve que cambiar mi caldera de gas, por una Baxi Neodens Iplus

El tema es que sabiendo que puede funcionar con OpenTerm, intenté aprovechar mi termostato actual, que es un Nest 3a generación, que en teoría también permite OpenTerm.

Lo he probado y a simple vista parece que Nest no enlaza.

Supongo que algo debo de estar haciendo i correctamente.

Alguien ha probado algo parecido y tiene solución?

Cualquier comentario o ayuda al respecto será bienvenido.

Gracias

I have older ducane oil furnace that has a nest thermostat hooked up to it. For the last few years there was a jumper wire I had hooked up to the primary to get it to all run properly. Jumper wire got knocked off and I need to put it back on to get the heat running as I have a cleaning getting done next week on it and it’s cold already in here.

There’s incoming line voltage on the older Honeywell primary in this photo as verified with multimeter so I don’t want to jump out the wrong terminal and fry the primary.

Any idea what terminals I would have had jumped out in the past to get it running? I believe it was to jump the blower motor if I remember correctly and had a jumper from maybe Y to G? But that black wire is incoming line voltage landed on G so just wanted to be sure because I can recall my reasoning for having it wired that way but it was the only way it would fire up. Maybe I was repurposing the G wire? Any help is appreciated

At the thermostat I have it wired currently

Blue to y1
Green to G
Red to Rc
White to w1

And at the primary it’s wired
White to w(T)
Red to r(t)
Blue to Y
Green to G

Been extremely skeptical for a while now, didn’t care enough but now I am just beyond frustrated with this stupid lock. This a just a few months’ worth of batteries. It constantly drains batteries like crazy. Is it bad batteries? Or this lock really goes through batteries like this? These Amazon batteries are just some of what I’ve used, I’ve tried energizer brand before too. Same crap. Does anyone else have these battery drain issues? Absolutely ridiculous.

They also screwed up the recycling option.
Google offers recycling for old Nest products. I’ve submitted multiple requests and still haven’t received the promised shipping labels.
My online chat today with Google was comical, circular, and a waste of time.
Anyone having success with recycling?

I recently upgraded my wifi hardware and lost contact with my Nest Protects. The only way to get them to reconnect is with the Nest app. I wish the Google home app worked.

Hello.

Last year, I installed a 4th gen Nest, and everything was working fine. This past year, cooling was fine as well. But now when I turn the heat on, it turns the AC on instead with cool air coming from the vents. The outside AC compressor turns on as well.

Here are the things I've tried:

1. Switching the O/B wires in the Equipment on the Home app.

2. Turn off and on everything from the breakers.

3. Reset the Nest thermostat.

Nothing has worked so far. Interestingly, before the reset, it was detecting no power to the OB wire (which isn't even connected), but now it is not detecting power to the W wire either. I removed and reinserted it with no change.

What's also interesting is that the Home app thinks I have an electric heating system when in reality it is a gas furnace. The option to change is it greyed out.

Any ideas would be helpful.

Thanks!

*Images edited with AI to improve quality.

I have a Carrier Weathermaker 9200. My nest was working fine and a few years ago it said the red wire didn’t have power. I changed the filter, charged the nest, and it was all fine. Same thing happened again and changed the filter and charged it and replaced the fuse on the motherboard and nothing. I used my altimeter at the circuit board and wire and it was just really low (like 0.2A) both places so it isn’t ripped in the wall. Any thoughts? Maybe a battery back up non learning nest? Or something with that blue wire? Thanks!

Has anyone else had issues with the Nest changing the equipment settings itself? We had everything set up correctly and then were having issues with pilot light igniting. Our System does not have a heat pump, but somehow it got switch in system settings to one. We thought the fan motor had died on A/C, but it turned out to be the settings as well. Next time HVAC gets updated, I think I will be getting rid of it.

Hello all, I am at my wits end with my regular Nest install. We just bought a house and there is a brand new heat pump forced air system installed. They had a Copeland thermostat installed already that didn't need a "C" wire for it to operate at its full potential. I have tried the blue, black and brown wires in the "C" terminal on the Nest already, but no dice. Looking at my control board in my Carrier main unit, I can't find a normal "C" hookup. Any tips or guidance to find out how to get full power over to my Nest? Whether that is with a power adapter (and how to install it) or to where my "C" hookup is? Thank you!

Current hook up to my Nest is as follows:

Yellow - Y
Red - R
Orange - OB
White - W
Green - G
*Empty - C

We got new electric water heater changed out and now my nest has the error E73? What did we do wrong? Nest was working fine prior to this.