I partly agree. Something changed. I have two Nests that worked
perfectly for a year (installed last July), then both suddenly started
having this problem in June or July this year. They were running in
power stealing mode (no C wire), and connecting...
I have not noticed either of my systems having this malfunction in the
couple weeks since I connected the C wires. Their lack of responsiveness
to a widespread issue has definitely ended my recommending Nest to
others, though.
I connected my C wires (both ends) and it seeeeeems like it might have
fixed it. Hard to tell but I have not heard the issue since; will be
more sure after being home all weekend and having more time to hear any
recurrence.
+2 on this issue. I have two learning-type Nest 3’s (two single
transformer gas/electric split systems) and both started doing
occasional 5-second off cycles of the AC compressors this year after
working fine last year. Each one does it once or twice...
