What Is Brown Wire On Thermostat - Web the brown wire on the nest thermostat is connected to the o/b connector. See the diagram below for the role of each. Web but there is no particular standard for thermostat wires, so it can be any color like yellow, brown, green or any other color. The o or orange wire connects to your heat. Web a brown wire is mostly likely a heat pump wire and should be connected to the o/b connector on the nest thermostat. Web thermostat wire could be used for any number of controls. Web using the color of the wires as a guide, compare the wiring on your thermostat to the wiring on your system control board. The blue wire is connected to the c connector. Closing words the “o” wire on a. Web a brown wire is mostly likely a heat pump wire and should be connected to the o/b connector on the nest thermostat.
If the b wire is blue, it should most skip to. A brown wire is mostly likely a heat pump wire and should be. Share improve this answer follow answered jun 6, 2018. Web the brown thermostat wire (sometimes referred to as furnace wire) is similar to the light blue wire for heating. Web a brown wire is mostly likely a heat pump wire and should be connected to the o/b connector on the nest thermostat. Look for the wire connectors unknown wires attach. Web 1000' 20/3 thermostat cable wire brown cl2 20 awg gauge 3 conductor pvc heat. The o or orange wire connects to your heat. Web but there is no particular standard for thermostat wires, so it can be any color like yellow, brown, green or any other color. If you see a wire of different color, say. Web the thermostat uses one wire to control the primary functions of your hvac system, such as heating, cooling, and fan. See the diagram below for the role of each. Closing words the “o” wire on a. Web the brown wire is for the emergency heat available on some hvac models. I have a heat pump and have a brown wire. The blue wire is connected to the c connector. Web a brown wire is mostly likely a heat pump wire and should be connected to the o/b connector on the nest thermostat. Web if your thermostat doesn’t have a separate connector labeled c and you’re not sure what type of system you have: Web the c, or common wire, provides smart thermostats with continual power. Web thermostat wire could be used for any number of controls.