So I just fixed this issue by running a C wire to my nest thermostat. I
was lucky that they used a 6-wire cable and I was able to use an unused
wire to put in to the C slot on the Nest and then added the C wire to
the C section of my furnace motherbo...
Hey EdwardT, -I have a Gen 3.4- Y1, G, W1, Rh- charged my nest manually
and after a couple hours it said my battery was low. HVAC Tech came out
and said the power was coming through properly and said it was a Nest
issue.