Furnace Thermostat Wiring And Troubleshooting Diagram вђ Hvac How To 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. The importance of the c wire. when you open your existing thermostat, the first thing you need to do is locate the c wire. the c wire, also known as the common wire, is most often blue and provides constant power to the thermostat. this wire could also be brown, black or purple. older thermostats may not have needed this wire, so a previous.
How To Wire A House Thermostat Connect the new thermostat. place the plate of your new thermostat against the wall where it will be located. check the plate with a level, and mark the screw holes with your pencil. if applicable, drill guide holes before adding anchors to the wall. pull the wires through the opening of the thermostat’s backplate. 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. 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. 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).
8 Wire Thermostat Wiring 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. 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). Use the screwdriver to remove the two wires from the terminals. remove the old thermostat’s motherboard and replace it with that of the new thermostat. reconnect both the red and white wires and tighten the screws. return the control panel to its position and turn the furnace on to test the wiring. Begin by installing the base first. thread the low voltage wires through the specified opening of the new thermostat base. if your new thermostat is not self leveling, use a small level to make sure it's properly aligned. mount the thermostat base on the wall using the screws included with the thermostat.
Thermostat Wiring Diagram Use the screwdriver to remove the two wires from the terminals. remove the old thermostat’s motherboard and replace it with that of the new thermostat. reconnect both the red and white wires and tighten the screws. return the control panel to its position and turn the furnace on to test the wiring. Begin by installing the base first. thread the low voltage wires through the specified opening of the new thermostat base. if your new thermostat is not self leveling, use a small level to make sure it's properly aligned. mount the thermostat base on the wall using the screws included with the thermostat.
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