RESOLVED - So I had the same issue except my Nest worked for 9 months
before issue started.Background / Set up: - Gas boiler , baseboard hot
water heat in basement (3 heat zones + hot water heater also - so really
4 with Taco controls)- Separate HVAC...
So lots and lots of replies. Quick update which I was waiting a while to
make (probably about to jinx everything).So spent a reasonable time on
support with Nest/Google, after 1 disconnection and restart (ugh), I was
able to get a replacement thermos...
So same issue with a noted timing difference. Installed Nest last Oct,
new NG boiler installed in March, began getting Low Battery in May,
rented a beach home for summer (lucky me , when stopping back home,
thermostat always on Low Battery cannot c...