We installed our Nest during the summer and had no issues, turned on the heat the other day and it wouldn't turn off even after I turned the system off, I had to turn on the AC to shut the heat off. It's also turning on the outside AC unit when I turn on the heater which is in the attic, our old thermostat didn't do that. Something is not right the AC unit should not be coming on too. We have six wires red, yellow, orange, white, green, blue and black, I hooked up everything but black. I ready to uninstall and put the old thermostat back on. Any suggestions?
