I have not purchased a Nest thermostat yet, but am looking for more precise compatibiity information before I make a purchase. My furnace, about 20 years old, and current thermostat show only RW&G wires.
Looking at the motherboard, a White-Rodgers 50A65-476, has terminals for other connections, including an unused C terminal. See image...
Does that mean I could attach a wire to the C terminal at the motherboard, then at the thermostat and use a Nest? Or, do I need to call a pro installer? Thanks.
Dunno if this helps... found this in motherboard doc
Thanks, I had missed your earlier response. I poked around online and ended up connecting to the C furnace terminal and I installed an ecobee thermostat. I decided against because I’ve read too many complaints about it. My ecobee is now one day old and seems to be working fine. Although the weather forecast it pulls up online seems to be a bit offbase.
Awesome — glad to hear that your issue is fixed. It looks like we can consider this one complete, so I will lock the thread shortly unless I can help out with anything else.