Fine Beautiful Carrier Thermostat Wiring Color Code

When doing carrier thermostat wiring you ll find a w white y yellow g green and r red terminal.

Carrier thermostat wiring color code. For this reason kill the power at the condenser and the air handler before changing or working on the wiring at the t stat. It is a red wire and comes from the transformer usually located in the air handler for split systems but you may find the transformer in the condensing unit. They are often connected with a jumper wire and a single red wire serves both of them.

However your connections may seem a little different on the thermostat itself. The red wire or 24 vac power lead is connected straight to the rc 4 terminals. The green wire underneath your thermostat connects to the fan of your furnace or air handler.

Lastly if you have a package unit then the. The green wire connects to terminal g on your thermostat. The yellow wires connect to the y terminals on your thermostat.

These colors are used as follows. This could happen if the wires are swapped on both ends or if there s a spice in the wire somewhere that was not matched up to the correct color. Rc red wire power 24 vac rh or 4 red wire jumpered power 24 vac w white wire for heating enable y yellow wire for cooling enable g green wire controls fan on auto the diagram shows how the wiring works.

Some thermostat units have a dedicated r terminal and it. The 5 universal base colors for thermostat wires which are in order of frequency of use red white green yellow and black. R the r terminal is the power.

The thermostat wire is color coded so the technician can identity which wire goes to which port on each board. Thermostat wiring and wire color chart thermostat wiring colors code. We give a summary tables of both traditional and current thermostat wire color code keys above.