Yes, Mike is correct, need a photo of how the Nest is wired and a
picture of your control board. Y terminal is what controls cooling and
sends the signal to your outdoor condenser unit. If you just have warm
ambient air coming out of the vents then t...
This is normal behavior, thermostats will cool below the set temp,
otherwise it would switch on and off constantly trying to maintain the
desired temp. Most tstats will cool it to one degree below the set temp
and wait until its one degree over the s...
Check behind your wall, I had a similar setup to yours and was able to
locate an old blue C-wire buried beneath the dry wall, just connected it
and traced it back to the furnace control board and then connected it to
the C terminal there.
To also confuse matters further, if you search on Googles own website
for firmware updates on their nest tstats, still says 4th gen nest is at
version 1.0 from October of 2020, which I doubt is true.
