T Stat Wire Colors

The green wire connects to the fan.

T stat wire colors. But i don t see a wire going directly to the c wire. The rc wire connects to the cooling system. My old thermostat old mercury honeywell has the following wires. Your best bet is to see the manufacturer s documentation both thermostat and hvac.

Blue to y green to g red to rh and white to w. 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. Rh power for heat rh not connected to rc jumper clip removed or 4. If you have a heat pump system place it into the o b terminal.

Not used on the 3m 22. The rh wire connects to the heating system. The yellow wire connects to your compressor. For example if the red wire is connected to w on the thermostat the furnace should turn on.

Locate any unconnected wire labeled w or w1. This wire connects to your heat pump if applicable. This could happen if the wires are swapped on both ends or if there s a spice in the wire. Southwire 250 ft 18 5 thermostat wire by the roll.

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. Yellow the yellow wire connects to your compressor. Or r or vr.

Green the green wire connects to the fan. If you don t know your system type place this wire into the w terminal. Thermostat schematic wire colors. 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.

Rc power for cool rh not connected to rc jumper clip removed rh. Item 244462 model 64169644. The white wire connects to your heat. In most thermostat wiring hookups the red wire is the power source for the system.

So i guess i don t have a real c wire. Rh and rc single power for heat and cool. 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. 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. The most common color i ve seen used for this terminal and wire designation is light blue but this varies and is entirely up to the installer what color to use. Orange this wire connects to your heat pump if you have one. If you only have 4 wires they are typically red yellow green black.

While there isn t an official standard for thermostat circuit wiring colors there is a general pattern.