05-02-2022 09:42 AM
I have a basic 2 wire, 24 volt furnace thermostat cilrcuit. Which terminals do I connect the wires to on a Nest Thermostat. I presentoy have an E 294 error with the wires connected to "W" & "R".
Answered! Go to the Recommended Answer.
05-12-2022 10:01 PM
Hey bmwaterman,
Checking back in — still need our help?
Best,
Melba
05-02-2022 08:31 PM
It sounds like you have a system that is expecting just a switch closer to the R and W terminals.
The Google Nest Thermostat
You probably will also need an external 24Vac transformer if there is no C wire on the furnace.
This is how you can wire it without a C wire
05-09-2022 09:40 PM
Hey folks,
Thanks for your answer and for providing the wiring diagram, Patrick_Caezza.
bmwaterman, I'm jumping in to ensure everything is covered here. I also recommend that you check on the suggested troubleshooting guide here: https://bit.ly/3FtQbnk
Best,
Melba
05-12-2022 10:01 PM
Hey bmwaterman,
Checking back in — still need our help?
Best,
Melba
05-13-2022 10:44 PM
Hi,
I haven't heard from you in a while so I'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