What color is the W1 wire on a thermostat?
White Wire
Thermostat White Wire (“W1” or “W2” Wire) W wires go directly to the source of heating; that may be a furnace (gas, electric, oil, you name it) or heat pumps (mini-split heat pumps included). W2 is designated for two-stage heating. Most heat pumps include second-stage heating and require the white W2 wire.
What is W2 wire on thermostat?
W2 – This is the thermostat terminal used for second stage heat. Many digital thermostats require 24 volts for power so the common wire is necessary. There is no universal color used for this terminal although black is often used. O or B – These thermostat terminals are for heat pumps.
Where does w wire go on thermostat?
The white wire underneath your thermostat connects to your heating system. It terminates at your air handler or furnace. The white wire connects to terminal W in industry-standard thermostats.
Is W1 same as W?
W – When you see a W terminal, it just means heat. Usually, you will only see W when the control only has one stage of heat. W1 – Means first-stage heat. In a heat pump, first-stage heat is the same as the first-stage cool.
What is W1 O B on thermostat?
W, W1, W2: Just like the Y wire, the W wire(s) control the heating aspect of your system. 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.
Is W the same as W1?
What is the V wire on a thermostat?
or R or V. W. W Heat control (usually this is the white wire) In most thermostat wiring hookups the white wire is used to switch heat on or off from the thermostat. W2.
What is the B terminal on a thermostat?
W/B: The W/B terminal controls the heat relay or valve. When the thermostat calls for heat, a signal is sent to power up the furnace and the blower fan or the boiler, heating your home.
What is W1 on furnace?
W1 – Means first-stage heat. In a heat pump, first-stage heat is the same as the first-stage cool. Whether that is heat or cool is actually dictated by whether or not the O/B terminal is energized. That is why, on many old thermostats, you would jumper Y1 and W1 in a heat pump application.
What is W1 and W2 on a thermostat?
What is W1 and W2 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. What color is the OB wire? Here are common uses for wire colors: Blue or Black – C – Common wire, may be unused by your existing thermostat.
Did I wire my thermostat correctly?
Make sure the inside of the thermostat is clean.
What are the wires on a thermostat?
The green wire on the thermostat is for the fan.
How to connect thermostat wiring?
Read the manufacturer’s instructions. Before wiring a new thermostat into your wall,review all tips,suggestions and pictures provided in the instructions.