What Is The Ob Wire On A Thermostat. Common Thermostat Wiring Colors So it makes sense that when we removed the brown wire from the Nest that things seemed to work normally The Nest Thermostat E and the Nest Thermostat's star terminal also have an O/B label because it can alternately be used as an O/B connector for heat pump systems
Common Thermostat Wire Colors from schematicparttumbler.z14.web.core.windows.net
A reversing valve is a small device on a heat pump system that moves between two positions depending on the OB settings on your thermostat. The OB wire controls your HVAC system's heating and cooling functions.
Common Thermostat Wire Colors
White wire for heating (connected to W or W1 terminal) A reversing valve is a small device on a heat pump system that moves between two positions depending on the OB settings on your thermostat. Proper Wiring Connections: Ensure that the OB wire is securely connected to both the O/B terminal on your HVAC system and the Nest thermostat
What is OB Wire on Thermostat? (Basics, Function, Precautions). The O/B wire is primarily associated with heat pump systems, where it plays a pivotal role in orchestrating the reversal of the refrigerant flow to enable both heating and cooling functions. The Nest Thermostat E and the Nest Thermostat's star terminal also have an O/B label because it can alternately be used as an O/B connector for heat pump systems
Thermostat Wiring Explained! How To, Color Coding, Types & More. Damaging the thermostat unit, the electrical system or even the AC/furnace unit itself So it makes sense that when we removed the brown wire from the Nest that things seemed to work normally