Fantastic Trane Thermostat Wiring Color Code

Color of wire and termination.

Trane thermostat wiring color code. 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. It s 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. The yellow wire is connected to the coil on the cooling contactor and the other end is connected to the y terminal on the thermostat.

Industry standard for geothermal heat pumps. The 5 universal base colors for thermostat wires which are in order of frequency of use red white green yellow and black. The red wire is the power wire coming from the secondary winding of the transformer.

For this reason kill the power at the condenser and the air handler before changing or working on the wiring at the t stat. Red or rc wires. Trane heat pump thermostat wiring color code hvac talk vbb showthread php 402082 best heat pump thermostat10 17 2009 hi i am in massachu.

Wiring trane weathertron baystat 240 trane 3aat80b1a1 thermostat. 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. Brown often connect to c or common or w2 2nd backup heat o.

We give a summary tables of both traditional and current thermostat wire color code keys above. White jumper to u f. Blue often c wire or common may bring power to the thermostat.

So for obvious reasons it is a wire that you don t want to play around with or put in the wrong place. Connect the thermostat wires. Industry standard for geothermal heat pumps.