Locate any unconnected wire labeled w or w1.
T stat wire colors.
So i guess i don t have a real c wire.
The rc wire connects to the cooling system.
Here is the industry standard thermostat wire color code used for most systems.
Yellow the yellow wire connects to your compressor.
This could happen if the wires are swapped on both ends or if there s a spice in the wire.
Rh power for heat rh not connected to rc jumper clip removed or 4.
If you only have 4 wires they are typically red yellow green black.
The thermostat wire is color coded so the technician can identity which wire goes to which port on each board.
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.
Green the green wire connects to the fan.
If you have a heat pump system place it into the o b terminal.
But i don t see a wire going directly to the c wire.
Not used on the 3m 22.
In most thermostat wiring hookups the red wire is the power source for the system.
Southwire 250 ft 18 5 thermostat wire by the roll.
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.
This wire connects to your heat pump if applicable.
Or r or vr.
While there isn t an official standard for thermostat circuit wiring colors there is a general pattern.
The rh wire connects to the heating system.
My old thermostat old mercury honeywell has the following wires.
Orange this wire connects to your heat pump if you have one.
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.
Item 244462 model 64169644.
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.
The white wire connects to your heat.
If you don t know your system type place this wire into the w 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.
Or v or vr.
For example if the red wire is connected to w on the thermostat the furnace should turn on.
Furthermore for the thermostat wiring colors code for this terminal if equipped consult with the installer.
The yellow wire connects to your compressor.
Thermostat schematic wire colors.
Rc power for cool rh not connected to rc jumper clip removed rh.
T outdoor temperature sensor.
Your best bet is to see the manufacturer s documentation both thermostat and hvac.
