One of my Nest Protect devices (all Gen 2) records a sensor problem and
a sensor restored everyday, both at the same time. Please see included
screenshot. I only noticed because I checked the history. Otherwise,
there's no daily indication of any iss...
Since the unit was out of warranty and Nest support would not replace
it, I opened it up and cleaned it. It didn't appear to be dirty at all,
but I vacuumed it anyways and blew some compressed air. Since then, it
has not reported any issues, so maybe...