York Thermostat Wiring Color Code

Color of wire and termination.

York thermostat wiring color code. If you have blue white blue stripe orange white orange stripe and possibly green brown pairs as well coming out of the wall then it is probably phone or networking wire and it isnt good because it is too thin for the current. The color of wire r is usually red and c is black. 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. In electric heating furnaces this lead turns on the heating elements.

Red for the common hot side of the heating transformer. If you only have 4 wires they are typically red yellow green black. C is known as the common terminal. These colors are used as follows.

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. As shown in the diagram you will need to power up the thermostat and the 24v ac power is connected to the r and c terminals. In gas systems this triggers the lighting process.

Thermostat schematic wire colors. Heat pump thermostat wiring a typical wire color and terminal diagram. Upgrading from a 4 wire thermostat to a 5 wire thermostat duration. Opens the valve turns on the ignitor and fires up the burners in the furnace.

And in heat pump systems the white wire starts the compressor in heating mode. The thermostat wire is color coded so the technician can identity which wire goes to which port on each board. The basic heat ac system thermostat typically utilizes only 5 terminals. W heat white wire.

The diagram below shows how a basic 4 wire thermostat is connected as indicated by the color code chart above. Thermostat wiring and wire color chart thermostat wiring colors code. Basic electrical 101 08 hvac thermostat wiring and troubleshooting duration. These two connections will ensure that there is power to the thermostat that you are operating.

Its important to note that in some cases the color of the wire does not necessarily mean it connects to that came color one the board. Common honeywell thermostat wiring color code.