@yoummr With a 2-wire heat-only system you need to install the Google
Nest Power Connector and an external 24vac transformer. Follow these
instructions, You want to connect the red wire to the Rh terminal and
the white wire to the W1 terminal.
@rbergl Is this a new install or one that has been working but doesn't
now? Can you post a picture of the original thermostat's wiring? Can you
post a Picture of the Nest wiring?
@RobertVelton Google Nest doesn't offer the back cover of the Protect
for sale. I would file a claim with the contractor and have them buy you
a replacement.
@SenorPP Can you post a picture of the original thermostat's wiring if
you have it? If you don't, can you post a picture of the wiring in the
air handler
