*The most common color I’ve seen used for this terminal and wire designation is a brown wire, but this varies and is entirely up to the installer what color to use. No, for a heat pump the orange wire for the Trane should go to the O terminal. In either case, it is crucial to find the wiring diagram for the unit. This website uses cookies to improve your experience. The Green Wire. Thermostat wiring colors is not so difficult once you understand how the system works and which wire goes where on the thermostat terminal board and where that wire is terminated in the equipment. Resource: The Home Comfort Book: The ultimate guide to creating a comfortable, healthy, long lasting, and efficient home. Additionally, it includes other detailed pages about the thermostat wiring color code. https://highperformancehvac.comhttps://www.youtube.com/channel/UCbzc3vmh2J3x7OpWq1q2Y9A Some manufacturers provide a terminal strip board where the wiring is attached. It's all basically a common sense color combination to make things simple for everyone to understand. Furthermore, the wire colors on the transformer will be different than the thermostat wires. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also believe the products we link to help our site visitors find products they need to enhance or repair their HVAC equipment. I dont know if it matters but my old unit was a AC and Gas furnace combo. Furthermore, for the thermostat, wiring colors code for this terminal (if equipped) consult with the installer or trace the wire out to the source. X or Aux – There is no universal color used for this terminal designation. You also have the option to opt-out of these cookies. Solid advice from a technician with years of experience in the field and with excellent customer support especially with wiring thermostats. *Although be aware that this may have changed, especially if the person who wired the thermostat didn’t use conventional color coding. Finally, this type of wire is different from the typical thermostat wire and a separate wire altogether. » You Can Avoid Costly Mistakes! Red Wire for RH terminal. It will provide heat but not AC. Furthermore, *be aware that this may have changed, especially if the person who wired the thermostat didn’t use conventional color coding. Furthermore, either reason can be harmful. Blank Display Problem – Screen Disappeared, Honeywell Heat Pump Thermostat Troubleshooting, How Can I Tell 1 or 2 Transformers for Heating Cooling System, How to Wire an Air Conditioner for Control – 5 Wires, HVAC Products Containing Mercury and Proper Disposal, Thermostat Wiring Instructions not Matching New, What Temperature Should I Set My Programmable To, Wiring a Programmable for Geothermal Heat Pump, How to Test a Thermocouple with a Multi-Meter. Breakdown of Colors and Terminals | Thermostat Wiring Diagram for AC Unit. Importantly, there is high voltage inside the air handler, boiler, or other equipment where the wires terminate. It terminates at the air handler or furnace. The fan wire. This website uses cookies to improve your experience while you navigate through the website. Lastly, Rheem and Ruud will usually use the blue wire for the reversing valve. Remember, the wires coming from the thermostat are terminated in the HVAC equipment. *The most common color I’ve seen used for this terminal and wire designation is a brown wire, but this varies and is entirely up to the installer what color to use. References for you in the video that will help you understand wiring the thermostat. These color codes are vitally important in connecting the right wires to the corresponding terminals. I cannot find where the Brown or the Black wires go to on the thermostat.. by High Performance HVAC | Thermostats | 107 comments, Thermostat Wiring Colors Code Page Navigation. Click the image to the right for purchase options of the UV light to protect your family. These links will lead to you purchase a product from another company. Before proceeding, we highly advise that you turn the power off at the circuit breaker. Red Wire for RC terminal. The green wire connects to terminal G on your thermostat. However, these are the most wiring methods used based on my years of experience in the HVAC field, where I successfully wired a lot of thermostats. https://highperformancehvac.com/thermostat-wiring-colors-code/This video will offer you information and resources to help you understand how to wire your thermostat including thermostat wiring color codes and control circuits for your air conditioner system. Additionally, in different equipment, you will find a bundle of wires with wire nuts holding them together. Furthermore, for the thermostat, wiring colors code for this terminal (if equipped) consult …