I'm trying to hook up my new thermostat. Programmable Honeywell home

Thermostat Ob Wire. What is OB Wire on Thermostat? (Basics, Function, Precautions) If you see a wire connected to your current thermostat's W3 terminal, we recommend booking a pro near you to install your ecobee W, W1, W2: Just like the Y wire, the W wire(s) control the heating aspect of your system

Common Thermostat Wire Colors
Common Thermostat Wire Colors from schematicparttumbler.z14.web.core.windows.net

If you see a wire connected to your current thermostat's W3 terminal, we recommend booking a pro near you to install your ecobee Let's start with understanding what we're dealing with here

Common Thermostat Wire Colors

Sometimes a thermostat's wire connectors have two labels or no label at all You don't need constant power if you have a traditional thermostat At the heart of a thermostat's wiring system lies the O/B wire, which serves as a crucial link between the thermostat and the heat pump in HVAC setups

What is OB Wire on Thermostat? (Basics, Function, Precautions). Attach the Red wire to the R terminal for 24V Power The OB wire controls your HVAC system's heating and cooling functions.

My installed heat pump thermostat is using the O/B wire as. Let's start with understanding what we're dealing with here If you see a wire connected to your current thermostat's W3 terminal, we recommend booking a pro near you to install your ecobee