Thermostat Wiring 101 How To Wire A Thermostat For Your Home Fixr Disconnect the wires. once you’ve located all the wires, taken a photo, and labeled where everything goes, it’s time to disconnect the wires and the mounting screws. make sure to tape the wires down so they don’t fall inside the wall. remove any anchor screws and the backplate of the existing thermostat. R or rc wire (power) connected to the r power terminal to power the thermostat. w wire (heat), connected to the heating control. g wire (fan) connected to the fan control to operate a blower in your hvac system. y1 wire (cooling) connected to the y terminal compressor refrigerant system.
Thermostat Wiring 101 How To Wire A Thermostat For Your Home Unscrew the two wires from the terminals. remove the motherboard of the old 2 wire thermostat and put the new 2 wire thermostat in its place. reconnect the red and white wire, tighten down the set screw, and put the control panel back on. test the 2 wire thermostat wiring by turning the furnace on. Key wires: red (r) for power, white (w) for heating, and yellow (y) for cooling. process: connect the red wire to the r terminal, the white wire to the w terminal, and the yellow wire to the y terminal. if there’s a green wire for the fan, connect it to the g terminal. programmable thermostats:. Here’s how to wire a thermostat using the color code and, fyi, each terminal’s purpose. attach the red wire to the r terminal (call for heating and or cooling). attach the green wire to the g terminal (fan). attach the white wire to the w terminal (heat). attach the yellow wire to the y terminal (ac). Basic thermostat wiring for furnace and air conditioner. i show where the wires go at the thermostat, the color code, then down at the furnace control board,.
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