O B Wire Nest. Nest Red Wire To Rc Or Rh Uploadard This wire is typically blue or white and is used to control the flow of power and provide a constant voltage However, when we tried the heating, the A/C unit outside.
What Is the OB Wire on a Nest Thermostat CitizenSide from citizenside.com
G-Green, W-White, Y-Yellow, R-Red, C-Red/Black (Blue wire) and last O/B- Orange/Blue (Orange Wire) The O wire reverses the valve from heating to cooling, and the B wire switches the valve from cooling to heating
What Is the OB Wire on a Nest Thermostat CitizenSide
Y1 Compressor Relay (Stage 1) G Fan Relay* O/B Heat Pump Changeover Valve; Rc 24VAC power from cooling transformer Use wire nuts or terminal connectors to ensure a secure and proper connection X, AUX: Some heat pump systems can provide auxiliary heat
Nest Wiring Diagram 4 Wires YouTube. A brown wire is most likely a heat pump wire and should be connected to the O/B connector on the Nest thermostat O/B Wire: The "orange/brown" wire is used for an auxiliary heat source, such as an electric heater.
Google Nest Thermostat Heat Pump Wiring. G Wire: The "green" wire is for the fan, allowing it to run independently of heating or cooling And a single stage heat pump will have a single wire connected to a compressor relay stage one( Y1) Altogether you should have 5 wires connected