05-05-2022 09:09 PM
Tried installing a 1st gen google nest. Wires from old is rh and w. Installed and needed a common c wire or google power cord. My electrician helped me and still can't detect common wire. We tried three different wires. I bought a 18/5 thermostat wire and strung it through and connected. It was too short, we added 1 foot of stranded wire to it (I see no stranded wire) but he is unsure why it shouldn't work, he checked voltage and he is getting 30 volts from RH-W. So I left the new wires connected, disconnected just the common, grabbed the old rh wire that hasn't been tampered with and plugged to common to common. Still undetected
05-06-2022 06:59 PM
It sounds like you will need an external 24VAC transformer and the Nest Power Connector.
05-10-2022 08:07 PM
Hi Grimreaper42,
Thanks for reaching out.
I'd like to jump in here and check if you've seen Patrick_Caezza's response. We'd like to hear how it goes by getting a reply from you on this thread.
Best regards,
Ryan
05-10-2022 08:36 PM
I just saw the message and will gladly try this with transformer if it will work with an electric furnace. It's not a HVAC. 2 speed blower motor. Schematics and wires
05-15-2022 09:13 AM
Hey Grimreaper42,
I just wanted to follow up and see if you're still in need of help. Please let us know as we would be happy to answer any questions you may have.
Best regards,
Ryan
05-15-2022 10:00 AM
Google is sending another thermostat to see if that work, possibility ine I have might be faulty.... just waiting for it. I will follow up
05-20-2022 08:55 PM
Does the transformer need to a 24v/20va?
Or can a 24v/40va work as well?
The 20va ones I have found needs to be plugged into a wall. And the 40va can be hard wired in.
07-15-2022 09:48 AM
Hey there,
In an attempt to keep content in these forums fresh, we'll be locking and closing this thread. If you still need assistance with this issue, feel free to start a new thread. Thank you for your understanding.
Best regards,
Brad
05-10-2022 08:35 PM
Hope pics turn out. It's just a heated 2 speed motor blower, the pics of nest is before adding a common, second is when a wire is directly connected to it. Code is N261. If the transformer is still an option I will go and get one. Thank you.
05-18-2022 06:22 PM
Does the transformer need to a 24v/20va?
Or can a 24v/40va work as well?
The 20va ones I have found needs to be plugged into a wall. And the 40va can be hard wired in.