My nest T, was working propertly until this morning. first said need to charge, after charging for a wile. desplay wrong wiring. and no one move anithing. my first cuestion is. is there were any sistem o soffweare actualization?
If the condensate drain on your AC unit is blocked or the float switch is stuck up, it could be causing the power to to the thermostat to be be shut off. This would cause the thermostat to discharge and also show incorrect wiring.
