Google Nest Community

Originally HVAC system was working fine. Installed Nest thermostat per the instructions and immediately the fan came on and will not turn off no matter what. Reinstalled old thermostat and fan turns off when HVAC is off like normal, put the nest back...

Old thermostat had no issues after installing the Nest thermostat now the fan will not turn off, doesn't matter if AC/Heat is on or off, turn the system off fan still going, take face plate off and nothing, only way it turns off is at the breaker. Th...