What color of thermostat wire is used for the cooling control?
yellow
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).
What is the O B Wire?
O, B, O/B: These wires are responsible for switching the changeover valve in a heat pump system. The O wire reverses the valve from heating to cooling, and the B wire switches the valve from cooling to heating. Sometimes it might be a single O/B wire instead of two separate wires.
What does W1 and W2 mean on a thermostat?
In a conventional system, W/W1 controls your heating system and, where applicable, W2 controls your heating system’s second stage, which helps warm the home faster. In conventional cooling systems, Y/Y1 controls the first stage of cooling and Y2 controls the second stage, which helps cool down the home faster.
What are the wire colors of a thermostat and their function?
Red – Rc – 24VAC (dedicated to cooling call) Green – G – Fan. White – W – Heat. Yellow – Y – Air conditioner.
What color is ob?
European OB Full Color Code Chart
| Core # | Color |
|---|---|
| 93 | brown/white/red |
| 94 | violet/white/red |
| 95 | pink/white/red |
| 96 | orange/white/red |
What Colour is the C wire?
Blue wires
Blue wires are also called “C” wires because they are the Common wire. C wires are necessary for any “smart” thermostat that needs to be connected to a power source 24/7, regardless of your heat pump type.
What color is C wire?
Blue wires are also called C wires because they are the Common wire. C wires are necessary for any smart thermostat that needs to be connected to a power source 24/7, regardless of your heat pump type.
