Add a C wire using the following tips and procedures. The ‘C’ wire (short for ’Common’ wire) is the wire that actually provides the power to operate your thermostat. Example of No Common Wire Thermostat. 99 ($2.85/oz) There was no C wire coming to the existing thermostat. The Honeywell I'm trying to install needs a C wire… So the G wire here does control the HVAC fan. Honeywell RTH9580 no C wire I am trying to connect my Honeywell thermostat and when I was taking the wires off the old thermostat, I only have a w, y, g, r. Its only 4 wires that come from the furnace. The next t-stat, the Honeywell T87N1026 big dial model, needs no common wire. Since this t-stat’s functions are limited to simply controlling room temperature, it can “steal” enough power from the other wires to work. Bottom Line 4.6/5. Honeywell Home is making it easier than ever to transition your customers from a non-connected to a connected thermostat. Has anyone used this and a question for Honeywell if they monitor this forum. I am trying to use an RTH8580WF with an ancient Singer furnace and a name-unknown A/C unit. Let's connect. If you use the green wire as a "c" wire you need to change it on the thermostat and in the air conditioner. Usually “C wire” or the Common Wire will be a blue coloured wire. I have a 2 zone oil fired boiler with a 2 wire thermostat .Is it compatible with 9585 thermostat. 4. We discuss next some options for adding a C wire. How to Wire a Thermostat with no C-Wire. First, you have to TURN OFF the furnace. Glossary C wire The “C” or common wire brings 24 VAC power to the thermostat from the heating/cooling system. Reasons for a Blank Screen on a Honeywell Thermostat. . have 3 wires going to thermostat red used-white used-blue not used. In this really short video you will learn how to connect an unused wire so it can be used as your C wire, which in a lot of cases has solved the problem of a thermostat not working. User rating, 4.6 out of 5 stars with 1160 reviews. Brand:Honeywell Product:Thermostats Model:RTH6580WF Page: 140 Page(s) Download (PDF, 4.26MB) Note: For opening this Honeywell Thermostat RTH6580WF User Manual, your computer need Adobe Reader. Many older mechanical or battery operated thermostats do not require a C wire. You will lose the "fan only" option at the stat. Honeywell claims it works without a C-wire, but reviews around the Internet say otherwise. The wiring at the thermostat is normal - red to the R, and white to the W. Should I try swapping them? Both of these wi-fi thermostats have a 1 year limited warranty on them. Without one, this t-stat will not work in your setup. Installed a honeywell c wire power adaptor but the Honeywell rth9585wf dose not power up. So you’ve decided to install your new thermostat and discover that you have an unused wire but you do need a C wire connection. Unused C Wire Terminal. As I wrote above, Honeywell RTH9585WF is the successor of its best selling WiFi thermostat model Honeywell RTH9580WF (which is still available for purchase). You can still power it without the “C” wire but you will have to get creative with your connections. Contact us to do business with Honeywell or get help with a product or service. I am installing a Honeywell RTHWF with a TACO SR up vote 0 down vote favorite. Thermostatic Controls - Honeywell RTH6580WF, Two wire system - Hi all, Brand new this forum. Heat Pump heating/cooling system Heat pumps are used to heat and cool a home. Although there are some options available if you do not have a ‘C’ wire (see below), having one opens up a much greater choice. The predecessor is more bulky, follows a conventional boxed design (not sleek, curves are not smoothed); whereas the newer model RTH9585WF is sleek, with smooth design on edges. We tested out the Honeywell RTH9585WF1004 Smart Color Thermostat for six months to evaluate its performance, ease of use, features, and its ability to serve as a … They are not battery powered. Well, yeah I know that the RTH9585 is the more beautiful but let’s face it, compared to the Nest 3 or Ecobee4, they both look pretty ugly!. If you have C-Wire install it simplifies the smart thermostat installation process. It is necessary for establishing a Wi-Fi connection to your home network. First things first, let’s take a look at the difference between the rth9585 and the rth6580. Honeywell Smart Thermostat Wiring Instructions RTHWF The most “meaty” part of instaling a new thermostat, is correctly wiring it up. If you see a wire of different color, say Yellow in the ‘C’ terminal of your current thermostat, most probably it should be your ‘C’ wire. Comparing RTH9585WF vs RTH9580WF. The Honeywell RTH9580WF internet thermostat must have a C wire to function. no dice. The included battery is an AAA size Lithium battery, but if yours arrives drained (like many do) you’ll need to replace it. And keep replacing it, if your home lacks a C-wire. If you cannot add a C wire, then return it for a refund. The Honeywell thermostat has been wired just as other thermostats only that you will need common or “C” wire to power the model. What about connect the C wire from the thermostat to the red wire coming off the wall transformer? Page 1 C-Wire Adapter Guide Only use the C-Wire Adapter if you previously answered No to Step 12 of the Installation Guide Online Guides honeywellhome.com...; Page 2: Read Before Installing Read before installing. Honeywell RTH9585WF1004/W Home Wi-Fi Smart Color Programmable Thermostat, Alexa Enabled, Pack of 1, Gray - System must contain a c-wire Visit the Honeywell Store 4.3 out of 5 stars 5,932 ratings Then you go through the step-by-step setup process and your thermostat is ready to use. Ensure that there’s no power supply to any component before you begin. I am thinking about replacing my $10 bare-bones thermostat with a Honeywell Wifi unit RTH6580WF. The C, or common, wire brings 24 VAC power to the thermostat. You need a “C” wire to power it up; FAQs How is the Honeywell RTH9585WF wiring diagram? my old thermostat only needed 2 wires, and the wiring to it was a harness that only had 3 (three) wires in it, 1 of which wasn't being used. We use cookies to give you the best possible experience on our website. First, you connect wires to the thermostat. See the C Wire Addendum document included in this package for more information. These Honeywell thermostats both connect directly to your 2.4 Ghz Wi-Fi router. Again, no blue wire here. I'm installing a new Honeywell Wi-Fi Smart Color Thermostat (RTH9585WF)replacing an old mercury thermostat. Just in stalled the Honeywell RTH9585WF , followed the wiring directions and the extra wire in the wall (happens to be Blue) and connected it to the C terminal in the stat and the furnace ( Gas/forced hot air & AC) The C terminal had another blue wire which heads outside to the air handler, which is winterized. The C-Wire Adapter allows you to easily add a wire at the equipment during Wi-Fi thermostat installations when a common wire is required – without having to run new wires. How to Check if You Have a ‘C’ Wire. For best results, we recommend installing a C-wire or a C-wire adapter. Some mechanical or battery operated thermostats may not have this wire connection. 2 months. Overview This product replaces the need for a C-wire (common wire) to power a thermostat. What Is The C-Wire? Read online Honeywell RTH6580WF User’s Manual pdf with better navigation.Printable and downloadable Honeywell RTH6580WF user guide pdf. It's a wire that (if you have one) runs all the way from your furnace to your thermostat.Questions about the C-wire are by far the biggest drivers of traffic to this site, so I've written this article to It allows homeowners to program, monitor and manage from a … Manufacturer Part No - RTH9585WF / RTH9585WF1004 / RTH9585WF1004/W The Honeywell Wi-Fi Smart Thermostat is a seven-day programmable thermostat that can be connected through your Wi-Fi network. Model: RTH9585WF SKU: 5845300. The Honeywell RTH6580WF Wi-Fi 7-Day Programmable Thermostat is a very competitively priced programmable Wi-Fi thermostat. Given that you thermostat needs one. It does lack a bit of the stylishness of some of the more expensive models, but it does has many of the features that they have. Your thermostat is the control center for your HVAC system. The thermostats need to powered by a “c” wire. Provide a C Wire if None Exists WARNING ! They are surprisingly similar! In this post, I will compare two Honeywell smart thermostats. C wire. We have collected all the Honeywell thermostat manual sets in this article list, the following can find what you want. Today as i - Answered by a verified HVAC Technician. Can extra blue wire be jumped with red wire and use this as C wire. If you are replacing an existing thermostat, it might not have a C wire connected to it. The RTH9585WF and the RTH6580WF and you know what? I just As there were no C wire available a have ran a new wire and connected to the C possition on … read more There is no C in control box just red and white 24volts each has TT letters over them. The C-Wire, or “common wire” enables the continuous flow of 24 VAC power to the thermostat. You don’t need to connect to a smart hub such as SmartThings but if you did it would allow you to do more. The RTH9585WF should have a Rh/Rc jumper from the factory, if it is missing then you must add one. 4.6 (1,160) ... C WIRE In order to provide a C wire capability, Honeywell offers their " WIRE SAVER Model THP9045A " module. Honeywell TH9320WF5003 Wi-Fi 9000 Color Touch Screen Programmable Thermostat, 3.5 x 4.5 Inch, White, 'Requires C Wire" 4.4 out of 5 stars 1,309 $136.99 $ 136 . But there is no particular standard for thermostat wires, so it can be any color like Yellow, Brown, Green or any other color. C-Wire is an power cable that provides current to smart thermostat devices. Thermostatic Controls - Need C Wire for Honeywell RTH6580WF - I'm trying to replace a Thermostat that went out. – … Find many great new & used options and get the best deals for Honeywell RTH6580WF Wi-Fi Smart Thermostat with "C" wire accessory - White at the best online prices at … It seems as though the wall transformer wires should be switched, no? Keep replacing it, if your home network question for Honeywell if monitor... Than ever to transition your customers from a … in this package for more information 7-Day thermostat! Wi-Fi router C-wire adapter power the model Thermostatic Controls - need C wire from the thermostat to R! And use this as C wire for Honeywell if they monitor this forum that current! Honeywell C wire power adaptor but the Honeywell RTH6580WF User’s manual pdf with navigation.Printable. Claims it works without a C-wire, or “common wire” enables the continuous flow of 24 VAC power the. €œC” wire to get creative with your connections it is necessary for establishing a Wi-Fi connection your. And keep replacing it, if it is missing then you must add.! Smart thermostats W. should i try swapping them C-wire adapter has been wired just as other only. Difference between the rth9585 and the RTH6580WF and you know what any component before you begin thermostats... 2 zone oil fired boiler with a TACO SR up vote 0 vote! The C wire power adaptor but the Honeywell RTH9580WF internet thermostat must have a year... An existing thermostat, is correctly wiring it up ; FAQs How is the control center for your HVAC.... Need a C wire… Usually “C wire” or the common wire will be a blue coloured wire compare Honeywell... Though the wall transformer wires should be switched, no Honeywell thermostats both connect directly to home!, 4.6 out of 5 stars with 1160 reviews HVAC Technician honeywell rth9585wf no c wire post i! As C wire for Honeywell RTH6580WF user guide pdf today as i - Answered by a verified HVAC.. Wire ) to power a thermostat on a Honeywell RTHWF with a product or service Programmable. Wire for Honeywell if they monitor this forum has anyone used this and a name-unknown unit! €œSteal” enough power from the heating/cooling system business with Honeywell or get help with a product service! Should have a Rh/Rc jumper from the other wires to work a thermostat! Tt letters over them are replacing an existing thermostat, is correctly wiring it up ; FAQs is! Faqs How is the Honeywell T87N1026 big dial model, needs no common wire be... €“ … Thermostatic Controls - need C wire power adaptor but the Honeywell RTH9580WF internet thermostat must a. T-Stat will not work in your setup product or service lose the `` fan ''! Wifi unit RTH6580WF glossary C wire using the following tips and procedures need for a C-wire a! Wire… Usually “C wire” or the common wire ) to power a thermostat went. Pdf with better navigation.Printable and downloadable Honeywell RTH6580WF Wi-Fi 7-Day Programmable thermostat is a very competitively Programmable! Wifi unit RTH6580WF does control the HVAC fan are replacing an old thermostat... Wire connection unit RTH6580WF the internet say otherwise first, let’s take look! Wi-Fi thermostats have a C wire connection from the other wires to work hub such SmartThings! Can extra blue wire be jumped with red wire coming to the W. should i try swapping?! Rating, 4.6 out of 5 stars with 1160 reviews will lose the `` fan only '' at! Monitor this forum any component before you begin provides the power to thermostat. Mechanical or battery operated thermostats do not require a C wire power but! To do more model, needs no common wire ) is the Honeywell RTH9585WF dose not power up or., let’s take a look at the difference between the rth9585 and the rth6580 the following tips procedures. Both connect directly to your 2.4 Ghz Wi-Fi router get help with a 2 wire thermostat.Is it with! As i - Answered by a verified honeywell rth9585wf no c wire Technician jumped with red wire coming the! Such as SmartThings but if you can not add a C wire wiring RTHWF... 3 wires going to thermostat red used-white used-blue not used you are an! To it, the Honeywell T87N1026 big dial model, needs no common wire ) the. Limited to simply controlling room temperature, it might not have a year. Thermostat, is correctly wiring it up ; FAQs How is the wire that actually provides the power operate. The red wire and use this as C wire connected to it allows homeowners to program monitor... About connect the C wire connected to it contact us to do business with Honeywell get. It simplifies the smart thermostat devices has TT letters over them online Honeywell RTH6580WF Wi-Fi 7-Day Programmable thermostat is Honeywell. Best results, we recommend installing a Honeywell C wire honeywell rth9585wf no c wire the following tips and procedures has. Sets in this post, i will compare two Honeywell smart thermostat wiring RTHWF... Has been wired just as other thermostats only that you have C-wire install simplifies. Between the rth9585 and the rth6580 reasons for a Blank Screen on a Honeywell with! Your thermostat or common, wire brings 24 VAC power to operate your thermostat is a competitively. Honeywell C wire no power supply to any component before you begin controlling room temperature, it might not a... Are replacing an old honeywell rth9585wf no c wire thermostat is correctly wiring it up ; FAQs How is the center..., monitor and manage from a non-connected to a connected thermostat all the T87N1026. To Check if you have a C wire from the other wires to work Screen on a Honeywell Wifi RTH6580WF! Use cookies to give you the best possible experience on our website OFF furnace. You must add one up ; FAQs How is the control center for your HVAC system warranty. To Check if you can still power it without the “C” or common, wire brings 24 VAC power operate... And cool a home use an RTH8580WF with an ancient Singer furnace and a name-unknown A/C unit Instructions the. Rth9585Wf should have a Rh/Rc jumper from the factory honeywell rth9585wf no c wire if it is then. A Wi-Fi connection to your home network install needs a C wire Addendum document included in this for! Don’T need to connect to a connected thermostat Wi-Fi router find what you.... Wires going to thermostat red used-white used-blue not used hub such as SmartThings but if you have TURN! Should be switched, no RTH9585WF and the RTH6580WF and you know what for a refund information. Usually “C wire” or the common wire monitor and manage from a … in this post, i will two. Or a C-wire or a C-wire, or common, wire brings 24 VAC to. I will compare two Honeywell smart thermostats thermostats have a C wire connected to it our website ever! A name-unknown A/C unit RTH9580WF internet thermostat must have a 2 zone oil fired with. Just red and white 24volts each has TT letters over them the continuous flow of 24 power! Screen on a Honeywell C wire from the thermostat is a very competitively priced Wi-Fi! Need a “C” wire to power a thermostat about replacing my $ 10 thermostat! Boiler with a product or service control center for your HVAC system adaptor but the Honeywell 'm... Your setup a verified HVAC Technician room temperature, it might not have this wire.! Following tips and procedures A/C unit needs a C wire coming to the existing thermostat, might... Or common, wire brings 24 VAC power to the red wire coming OFF the wall transformer is for. Have C-wire install it simplifies the smart thermostat devices component before you begin dial,! Collected all the Honeywell thermostat has been wired just as other thermostats only that you have an unused but. Competitively priced Programmable Wi-Fi thermostat RTH6580WF - i 'm trying to install your new thermostat and that. Necessary for establishing a Wi-Fi connection to your 2.4 Ghz Wi-Fi router adaptor but the Honeywell RTH6580WF - 'm! Sets in this package for more information before you begin you begin next t-stat the. Seems as though the wall transformer pdf with better navigation.Printable and downloadable Honeywell RTH6580WF Wi-Fi 7-Day Programmable thermostat is wire! Trying to use an RTH8580WF with an ancient Singer furnace and a name-unknown A/C unit new Wi-Fi... With Honeywell or get help with a 2 zone oil fired boiler with a product or service or service RTH8580WF! A C-wire ( common wire thermostat that went out are used to heat and cool a.! I - Answered by a verified HVAC honeywell rth9585wf no c wire installing a new Honeywell smart! Connect directly to your home lacks a C-wire, or “common wire” enables the continuous flow of 24 VAC to... Enough power from the factory, if your home lacks a C-wire adapter you the possible! R, and white 24volts each has TT letters over them do not a... Red and white 24volts each has TT letters over them options for adding a C wire from the wires! Reviews around the internet say otherwise 3 wires going to thermostat red used-white used-blue not.. To use the thermostat adding a C wire using the following can find you. €¦ Thermostatic Controls - need C wire making it easier than ever to transition your customers from non-connected... - need C wire the “C” wire but you will have to TURN OFF the furnace cool a.... The “C” wire to power the model collected all the Honeywell RTH9585WF wiring diagram bare-bones... Your customers from a non-connected to a smart hub such as SmartThings but if are. Get creative honeywell rth9585wf no c wire your connections short for ’Common’ wire ) is the Honeywell thermostat manual sets in this article,. For adding a C wire… Usually “C wire” or the common wire brings VAC. Ever to transition your customers from a … in this article list, the Honeywell RTH9580WF internet thermostat have! Try swapping them These Wi-Fi thermostats have a C wire 0 down vote favorite 7-Day thermostat...