Brown. Like orange, brown-colored wiring activates the heat pump and reversing valvereversing valveThe reversing valve has two states, relaxed (unactivated) versus energized. The energized state is typically achieved by applying 24 volts AC, which is commonly used in HVAC equipment. The heat pump can be designed by the manufacturer to produce either cooling or heating with the reversing valve in the relaxed state.https://en.wikipedia.org › wiki › Reversing_valveReversing valve - Wikipedia of the AC unit. While orange performs this task during cooling, brown activates these mechanisms while heating.Sep 26, 2017
What is the brown and black wire on a thermostat?
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 likely be connected to the C connector.
Can the C WIRE be brown?
The C wire's color isn't standardized, so its color can't be guaranteed across all HVAC systems. It is most often either blue or black, unless the installer did their own rewiring to create a Ca CAir conditioning, often abbreviated as A/C or AC, is the process of removing heat and controlling the humidity of air in an enclosed space to achieve a more comfortable interior environment by use of powered "air conditioners" or a variety of other methods, including passive cooling and ventilative cooling.https://en.wikipedia.org › wiki › Air_conditioningAir conditioning - Wikipedia wire. These are the most common colors and the labels used for thermostat wires: Blue or Black – C – The common wire.
What is the brown wire for on my thermostat?
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 likely be connected to the C connector.
Can the C wire be brown?
The C wire's color isn't standardized, so its color can't be guaranteed across all HVAC systems. It is most often either blue or black, unless the installer did their own rewiring to create a Ca CAir conditioning, often abbreviated as A/C or AC, is the process of removing heat and controlling the humidity of air in an enclosed space to achieve a more comfortable interior environment by use of powered "air conditioners" or a variety of other methods, including passive cooling and ventilative cooling.https://en.wikipedia.org › wiki › Air_conditioningAir conditioning - Wikipedia wire. These are the most common colors and the labels used for thermostat wires: Blue or Black – C – The common wire.
What happens if you incorrectly wire thermostat?
Potential consequences of improper installation could include: Electric shock. Blowing a circuit breaker. Damaging the thermostat unit, the electrical system or even the AC/furnace unit itself.Sep 4, 2018
What do the colors mean on thermostat wires?
This is the most typical thermostat wiring style, and it applies to systems that regulate both heat and air conditioning. The wires are typically arranged as follows: red for 24-volt hot, white for heat, yellow for cooling, green for the fan, and blue for common (although the common wire may be a different color).