12-10-2021 06:43 AM
I installed the 3rd gen Learning Thermostat a few days ago and it's been a disaster.
I set it to eco mode overnight (52F) but programmed it to 68F at 7 AM when I get up. I got up in a freezing house and the thermostat was in the eco mode still after 7 AM. I though it was a glitch so set it to 65F at 5 PM to make sure it has enough time to heat up the place before 6 PM when I get home. Nope. 52F. At 6 PM I set it manually to 68F, it says 2+ hours to reach that temp. 5 hours later at 11 PM it was only 63F.
Is this how Nest saves energy? I bet this is a very efficient way! I never had such issues with my old Honeywell so I called Nest support and they tell me I need the C wire. I have a two-wire gas system (no AC) and I know that C wire is required for the regular Nest as it displays an error, but the learning one does not show any issues.
I see a bunch of videos about how well the Learning Thermostat works with a two-wire system. Which one is true?
12-13-2021 02:48 AM
I have had my two nest units for over a year and they have worked fine however now I am having the exact same issue with both not heating at night. It seems that the firmware/software upgrade to 6.2.22 may be the issue. I have tried everything to fix it. It is not a hardware issue as I have had the maintenance guy out to check both units and when he puts the old thermostats back on they work fine but when they switch back to the nest I am having this issue with not heating at night. It never seems to reach the temp it is set for. I have them set for 70° and although the thermostat stays orange as if it’s heating the temperature slowly drops and it says 2+ hours to reach 70°. And just continue drop during the night.
12-15-2021 06:51 AM
Was this ever resolved? I am having the same issue…
12-15-2021 07:10 AM
No. I haven't looked for any other community, but this one obviously is not very active.
Google doesn't seem to care/know.
12-16-2021 04:51 PM
Thanks for the update. I’m checking other community posts and several very similar none of which have any real solutions.
02-20-2022 12:29 PM
same issue.. have posted this into my chat with Nest Support and asked for an escalation.. not very optimistic
12-05-2022 06:36 AM
Any resolution? Mine does the same… and we are freezing 🥶