I spent close to 5 hours on chat with tech support over this issue. In
the last few minutes of the chat, it was finally acknowledged that a
contact had failed (not a bad connection, a failed component), possibly
during a power outage, and support was...
Our cabin has a dual fuel HVAC with 3 vertically stacked zones and a Gen
3 Nest that has run trouble free controlling our main floor zone for
almost 2 years. The basement and loft zones are controlled by non-smart
thermostats. Today the Nest stopped ...