It sounds like the internal battery in your Nest may have completely
drained while it was unplugged for those few weeks, and now it’s
struggling to wake up. Normally, leaving it plugged in for a while
should bring it back to life, but if it’s showing...
It sounds like your thermostat’s internal battery has degraded after
sitting through the summer with minimal charging cycles. Even though
you’ve confirmed a solid 27V supply at the base and connected a proper
C-wire, the fact that it only holds charg...
