Wiring help

[ctlyon1986]

I have an electric boiler and also a AC unit. my old thermostat was wired up with a wire in Y, W, Rc and Rh - with a jumper between Rc and Rh. I wired the Nest the same way - minus the jumper. The thermostat dies every 2-3 days and then i need to pop it off the wall and charge it via usb cable. I went to add a Cwire but opened up my unit to realize there is not a control board in it... guess its just that old?? So then i went online and found a 24V transformer that you plug into the wall. it says online to remove your current Rh wire and run this transformer to the C and Rh on thermostat. I did that and now get a C-wire low power error and thermostat stays stuck on that screen unless I go and wire it back the way I had it. Anyone know what I can do to get this thing to charge on the wall and not have to plug a usb into it every 2-3 days?

[Ryan_G]

Hi ctlyon1986,

Thanks for reaching out and we're sorry for the delay.

The Nest Thermostat could work with the power from the Rc or Rh but there are times that it needs to have a C (common) wire connected to have a constant power. We recommend using the Nest Power Connector if you don't have a C wire available from your HVAC unit.

Regards,

Ryan

[MelbaDT]

Hey there, 

Checking back in should you have further questions here. Let us know by replying to this thread. 

Best, 

Melba

[MelbaDT]

Hi, 

We haven't heard from you in a while so we'll be locking this thread if there is no update within the day. If you have any new issues, updates or just a discussion topic, feel free to start a new thread in the Community.

Best, 

Melba

[ctlyon1986]

I know they suggested the nest power connector but I don’t know what to connect that to on my particular setup

[MelbaDT]

Hey ctlyon1986, 

Got it and thanks for getting back to us. Here is more information about our Nest Power Connector and a step by step guide on how to install it: https://goo.gle/3bKL9bO

Hope this help. 

Best, 

Melba

[MelbaDT]

Hey there, 

It's us again — have you had the chance to check on the link above? Still have some questions?

Best, 

Melba

[Jake]

Hey ctlyon1986, 

I wanted to check in with you, and ensure you are good to go. Please let me know if you are still having trouble, as I will be locking the thread in 24 hours due to inactivity.

Best regards,
Jake