“I have a nest and whenever I switch from Eco to Heat settings, my AC turns on as well as the furnace. The air coming out of the vents isn’t warm despite the furnace running. Why is the AC turning on? This never happened with my other thermostats.”
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Dawn, Sounds like something isn't wired right. I would reach out to Nest and they can assist you. Their support in troubleshooting a software issue with my original thermostat took a bit but they knew what they were doing.
Sorry, there was a problem. Please try again later.Have you made sure you have the thermostat connected properly? It sounds to me like you may have the wires set up wrong.
Sorry, there was a problem. Please try again later.Definitely sounds like it has been installed incorrectly. Check the wiring again
Sorry, there was a problem. Please try again later.If you have a large AC unit it could just be the fan kicking on to start the air circulation in your home. Mine would do the same thing. If you’re switching from Eco to Heat I assume it’s because of winter time and you normally wouldn’t be turning on the AC - in the winter I typically kick the breaker off on the condenser outside (could be a switch by the big unit outside or might be a fuse you pull out and can usually flip around and put back in with the connections not touching) so even if I turn on my AC (on purpose or accidentally) it won’t turn on.
Sorry, there was a problem. Please try again later.Almost certainly something is mis wired. I had a similar issue with a unit that does two stage heating. Probably a good idea to call in a pro.
Sorry, there was a problem. Please try again later.