Need help with Nest thermostat

Submitted by untolddawnz t3_10zbk5b in DIY

Hello! I am trying to set up my Nest Thermostat E in my new apartment. I have included a link to a picture of my current thermostat wiring, but some info is a bit hard to see, so I'm going to explain it here as well.

In the top row from left to right, we have the following terminals:

W, RH, B, RC

In the bottom row from left to right, we have the following terminals:

G, O, Y

In the W terminal is the white wire. In the RC terminal is the red wire, with a jumper wire connecting the RC and RH terminals In the G terminal is the green wire In the Y terminal is the blue wire

In the B terminal is nothing In the O terminal is nothing

I tried reaching out to Nest support as the app suggested and gave them all this info as well as the model number of my thermostat. They said they needed the model number of my AC blower and heating unit as well. I don't have this information and it wouldn't be easy to obtain it. I'm hoping it's not required.

Can any smart cookies out there help me out? TIA.

https://ibb.co/rffgP3Z

Edit: The nest E thermostat only has Y1, G, R, W1, C, and O/B terminals. It's not something I can simply plug in the wires into the same terminals, because there isn't a one to one terminal for every wire. I also don't have a jumper wire to install for the nest E, nor do I think one would fit in these tiny terminals.

Edit 2: When plugging in the wires as closely as possible to the original configuration White to W, Red to R, Green to G, and Blue to Y, heating and cooling work perfectly. The problem is when i turn heating or cooling off, the fan runs continuously and constantly. No matter what I do, I cant turn the fan off, including setting the fan to 'off'. This does nothing, the fan continues to run. This applies (I just found out) to both my original thermostat and the nest.

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Comments

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Knightmare t1_j82lyyc wrote

It really couldn't be more simple... https://youtu.be/dHKD-9uI24I

You just label the wires with where they're plugged in now, and then put the same wires into the same spots on the nest base.

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untolddawnz OP t1_j82o0zb wrote

The nest E thermostat only has a Y1, G, R, W1, C, and O/B wires. There's not a direct comparison to be made with my current thermostat. In addition, I dont have a jumper wire for my nest nor is one likely to fit due to the tiny terminal holes on the nest E thermostat. It isn't straight forward, at all.

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Knightmare t1_j82obwg wrote

I know with the other nest you don't need to jumper rh and rc. It handles that internally. I would just put that wire into R. The other wires are the same.

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untolddawnz OP t1_j82p8u3 wrote

The configuration you're suggesting didn't work, it's the first thing I tried in late December and I'm revisiting it now.

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untolddawnz OP t1_j82py3x wrote

Although I'm starting to think the issue wasn't with the wiring of the Nest E but might just be with the HVAC system to begin with because I'm testing the old thermostat now and it still keeps running the internal blower when I don't want it to

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kittenrice t1_j830bmr wrote

Can you please just take pictures of (and post):

The furnace board where the thermostat wires connect.

The terminals of the thermostat you're trying to install.

The terminals of your current stat.

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untolddawnz OP t1_j836yl9 wrote

I don't have access to the furnace board. And the problem I'm having seems to be with both the current thermostat and the new thermostat. So I'm thinking now that it's nothing to do with the wiring

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Knightmare t1_j82q5i9 wrote

So the picture you took is before you started trying anything, or is it possible that you put the wires in the wrong place when reinstalling the old thermostat?

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untolddawnz OP t1_j82qs75 wrote

The picture is from before, I took it before I started making any changes. And I just put it back up and it's set up now identical to the picture

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