sometimes the ac unit is working so hard because of heat you may want to check out side to see if there is frost around line, the fins all around are clean and clear of leaves or other air blocking material. Also sometimes the unit in the house above the furnace that connects to ducts can freeze up because it gets dirty over several years. if you see any water by floor where unit is then that would be the case. some places to start
I am also having this problem. I already checked all the things listed above and they are fine. We have hired 3 ac repairmen and none of them could find a problem with the ac units. Any other suggestions to do with the nest thermostats? Thanks for the help!
Me too same issue! Had my NEST 3rd gen thermostat for over 3 years. Earlier this summer I enabled Learn Mode - inside temp was between 72 to as high as 78 degrees. With the externally high Arizona temperature I disabled Learn Mode, but the unit acted as if Learn was still on.
Thanks for reaching out to the Google Nest Community Forum. I'd love to know more about this.
Could you share a photo of your thermostat's wiring with us? Are you getting any message codes or wiring reports? Also, please gather the power readouts from its settings under the technical info.
I'll look forward to your response.
I am about to do my brothers. He got the same thermostat as me. wonder if we will have any issues when doing his.
I did have to redo all my google home stuff when I got a new modem. When I did that somehow it must have gotten an update or something because this time i actually was able to say I had the 24v common wire. When I do my brothers I will start with saying I have the 5 wires Y/C/W/G/R and no OB* . The problem I had early on apparently is no longer an issue, at least not with mine. I just said I didn't have a C wire and it worked before when it use to give a fail code or something.
I am glad to hear you were able to get the issue resolved. I wanted to check in with you, and see if you had any questions from here. Please let me know, as I would be happy to take a closer look.
Just one quick final check in here since activity has slowed down. We haven't heard from you in a while so we'll be locking this thread if there is no update after 24 hours. If you have any new questions, updates or just a discussion topic, feel free to start a new thread in the Community.