T Stat Wire Colors

Orange this wire connects to your heat pump if you have one.

T stat wire colors.

The rh wire connects to the heating system. Or v or vr. Green the green wire connects to the fan. The green wire connects to the fan.

This could happen if the wires are swapped on both ends or if there s a spice in the wire. Yellow the yellow wire connects to your compressor. My old thermostat old mercury honeywell has the following wires. Thermostat schematic wire colors.

The rc wire connects to the cooling system. If in the previous step you identified an o b or o b wire that s connecting to the o b terminal and have a separate w wire place this wire into the w2 terminal. Furnace thermostat wiring diagram terminal letters on a thermostat and what they control the hot wire 24 volts usually red from the transformer is the main power wire to turn on or off a furnace components. T outdoor temperature sensor.

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. If you have a heat pump system place it into the o b terminal. Locate any unconnected wire labeled w or w1. For example if the red wire is connected to w on the thermostat the furnace should turn on.

While there isn t an official standard for thermostat circuit wiring colors there is a general pattern. In most thermostat wiring hookups the red wire is the power source for the system. Rh power for heat rh not connected to rc jumper clip removed or 4. Or r or vr.

Rh and rc single power for heat and cool. White the white wire is what connects to the auxiliary heat on your system. The yellow wire connects to your compressor. The white wire connects to your heat.

Item 244462 model 64169644. So i guess i don t have a real c wire. If you don t know your system type place this wire into the w terminal. Rc power for cool rh not connected to rc jumper clip removed rh.

It also has a bridge from rh to rc another bridge from rc to c and yet another from a second c terminal to the y. Blue to y green to g red to rh and white to w. Southwire 250 ft 18 5 thermostat wire by the roll. But i don t see a wire going directly to the c wire.

Here is the industry standard thermostat wire color code used for most systems. Furthermore for the thermostat wiring colors code for this terminal if equipped consult with the installer. If you only have 4 wires they are typically red yellow green black. This wire connects to your heat pump if applicable.

Not used on the 3m 22.