That sounds your Nest be somethings wrong . It last only 5 minutes after
fully charged by USB , appears to be either battery failed or other
components consume exceeding current . However there is one thing still
be puzzle to me , if an other thermos...
The Rh supposed to be the control to heat , so if it does connect well ,
the other thermostat wouldn't work either . That is why I suspect the C
wire connection on the HVAC side wrong .As I said , without C wire the
Nest Thermostat still barely work ...
Many thermostat runs on battery and do not need C wire to function . But
Nest Thermostat designed to use the wall wires to charge internal
chargeable battery , and it detects the wire insertion to the base . In
your case , if you have the C wire inse...
If your nest thermostat runs on 4 wires configuration , the charging
will be only on steal mode, or said trickle charging , at up to 40 mA,
which could be easily end up to low battery and shut off the nest
thermostat . There many things could cause n...