Honeywell Thermostat Wiring Color Code. Typically, a furnace plus a/c hvac system has four or five thermostat wires and a common wire. Now most thermostat's will not have all of these termination points but the chart will help you determine color code and connection points for your particular unit.
Here is the industry standard thermostat wire color code used for most systems: Vintage 4 wire honeywell thermostat how to a the hvac problem solver 2wire home wiring or 5 for dummies step diagram on pro 4000 your schematic color code c issues hacking way help with wiring a vintage 4 wire honeywell thermostat doityourself com community forums how to wire a thermostat the hvac problem solver diagram… read more » Not all thermostats have all these connection points, so you just have to follow the connection points of your particular unit.
Use our helpful tool to take an assessment of the existing wiring in your home.
Honeywell thermostat wiring color code tom s tek stop honeywell rth9580wf wi fi smart touchscreen thermostat silver new honeywell thermostat th4110d1007 wiring diagram diagram honeywell manual 4 wire premium baseboard line volt thermostat which wires do i unplug on thermostat to disable electric heat 6fd04 honeywell thermostat rth6350 wiring. I have created the chart below to help you determine the common terminals you should expect in a thermostat and the respective color codes that are connected to them. As long as your thermostat wires are installed according to that code, the wiring is easy because most terminals are marked with the first letter of the color that should be used for that terminal. What wires do you have?