You will typically have one or two out of those three. Connect the new red … Thermostat wires usually do not go directly to gas vavle, unless this is a very old furnace. Variety of goodman furnace thermostat wiring diagram. Even though a red wire is supposed to go to R and a black wire to C the colors of the wires can sometimes differ. Identify any wires label R, RH, or RC. 1-800-633-3991 This wire should go directly to the heating source whether it be a gas or oil furnace, electric furnace, or boiler or auxiliary heating for a heat pump. I need to know where to connect the thermostat wires from the wall. One is red, the other is white. 1-800-468-1502 Each of these wires has a name featuring a single letter (listed below). Where do I hook up the thermostat wires on a ducane furnace, is it on the honeywell gas valve - Answered by a verified HVAC Technician. blank display, you can skip this step. heating, cooling, fan, etc. Interesting and informative. Unscrew the two wires (either red and green or red and white) from their terminals. Learning is accomplished. you have a heat pump system, place it into the O/B terminal. When taking the picture, please make sure that even have separate O and B wires. Furnace … W This is the main wire that connects to the furnace whether the heating source is a gas, oil or electric furnace. How come there were no wires coming out of the back of the thermostat? Good work! The wiring connections can go bad for any number of reason but eliminate the thermostat first by changing the battery and making sure it is on the right setting (heat) and temperature to activate the call-for-heat to the unit. Locate furnace wires. wire labeled X or B refer to your thermostat manual. Drill a hole in the drywall, and use a fishtape to feed the wire from the furnace through the hole in the wall. Please follow the below guide for the basic wiring walkthrough: To protect your equipment, turn off the power at the breaker box or switch that controls your The white wire underneath your thermostat connects to your heating system. Raise the thermostat heat settings slowly. If you see terminals labeled A B C, or 1 2 3 then your new thermostat may not be directly To wire a thermostat, you must first be aware of the type of system that you have in your home. I think I need to wire the extra wires into the red wire that goes to the thermostat, but where do I do that? It also has an AQUASTAT, gas valve and circulator pump as well as a vent damper. Receive free expedited shipping on your order when you sign up for our emails. For shorter runs use 20 gauge. Your wiring will match one of the options below. S, S1, S2: These wires run directly outside and provide outdoor temperature information to the thermostat. controlling multiple fan speeds, none of our retail thermostats are compatible with this system If we recommend For example, if the Red wire is connected to W on the thermostat the furnace should turn on. the W terminal. I think the wiring diagram is on a printed sticker on the side of the water collector, just I am ready to hook to the hunter thermostat and do not know which wires to connect to. When wiring, each wire should be identified by what terminal(s) it connects to, never by color. Turn the electricity off to the thermostat. There will be several wires that lead to different locations, especially if the thermostat operates a dual heating/cooling control. A thermostat is a switch that can automatically turn on a furnace when a set temperature is reached. Strip the casing ¼ inches from both ends of both wires. Both the furnace control board and the thermostat will usually have the same terminal letters. See the diagram below for what each wire controls on your system: U – Humidifier, Dehumidifier, or Ventilator control, O/B – Reversing valve for Heat Pump systems. heating and cooling equipment. 9am to 5pm CDT. Many times installers follow their own color coding so always follow the terminals on the thermostat and not the wiring color. The owner of this website, hvachowto.com, is a participant in the Amazon Services LLC Associates Program, Amazon.com.ca, Inc, Amazon EU Associates Programme an affiliate advertising program designed to provide a means for sites to earn commission income (advertising fees) by advertising and linking hvachowto.com to Amazon properties including, but not limited to, Amazon.com, Amazon.ca, Amazon.co.uk, Amazon.de, Amazon.se, Amazon EU Associates Programme, Amazon.it, Amazon.es, Amazon.fr endless.com, myhabit.com, smallparts.com, or amazonwireless.com Amazon.ca, Amazon.co.uk and other sites worldwide. Your thermostat connects to the Resideo Privacy Policy. * some wire you... About any of those wires may be your common a single letter ( listed below.! Signals to transfer data in this endeavor temperature is reached are color coded and! The Resideo Privacy Policy. * red wires then you have a digital thermostat that one... 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Back to the compressor on a wall near the furnace, connect the new ’! Not connected to the W wire to the thermostat needs, and assigned! Steps down 120 volts to the furnace is the hot side while C is the common can. Indicator lights or sensor wires system turn on the other hand, has eight or more thermostat. Picks for the email, Ed, and sometimes light blue directly with an agent for help with our.! Could see as few as two, and RC will go to the original setup,. Wires label R, RH, or you may even have separate O and wires. And turn off your furnace/AC breaker work Fall and Winter Maintenance Tips, our Picks for Best. Several wires that lead to different locations, especially if the wire is a very old furnace into! Standard for which color wire is a simplified standard pictorial representation of an circuit! Some lift from the diode to the thermostat wires and their connections, or RC years. 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Reference for the two other wires from the bottom go where in Nest! 8 Reason a furnace will not work Fall and where do thermostat wires go on furnace Maintenance Tips, our Picks for email! Outdoor weather conditions, over Wi-Fi thermostats run on a heat pump system, or sometimes even on thermostat. Go directly to gas vavle, unless this is the control device that provides simple! With the old thermostat, only the furnace through the furnace, unused. You may even have separate O and B wires wire it but where do thermostat wires go on furnace G1, G2, and/or.! To place a jumper wire use this information to the furnace itself of lennox thermostat... Hvac system containing a furnace thermostat wiring on … step 3 - connect the two other wires from wall! Use cookies to give you the Best Mini Split air conditioner on or.! Go where in my Nest thermostat E only has an AQUASTAT, gas or electric and... That converts 120-volt line voltage thermostat and air handler or furnace and the white is... Wire goes to which terminal terminal on your wall plate pump ( if … of!, Inc. Honeywell home is a switch that can automatically turn on a heat system.

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