WiFi Thermostat, No C Terminal on FurnaceHow do I connect a WiFi thermostat to my furnace's primary control?Installing Honeywell WiFi ThermostatWIFI thermostat no C wireecobee3 Installation - Thermostat Y Terminal (yellow) Wire Connects to C Terminal BoardNew Thermostat installed but compressor comes on immediately0v at DC thermostat terminal in furnaceNeed help with wiring new Thermostat. Original 3 wire to Sensi EmersonOld oil furnace with 2 wire thermostat, installing new wifi and need C wire. How can I wire with my current stack switch?HVAC wiring for wifi thermostat installation (Ecobee) gas furnace + ACConnect Wifi Thermostat to Goodman GMP050-3?

Fear of getting stuck on one programming language / technology that is not used in my country

How to indicate a cut out for a product window

Did Swami Prabhupada reject Advaita?

Travelling outside the UK without a passport

Closed-form expression for certain product

Lowest total scrabble score

A social experiment. What is the worst that can happen?

What is the evidence for the "tyranny of the majority problem" in a direct democracy context?

What does routing an IP address mean?

Can I sign legal documents with a smiley face?

How do you respond to a colleague from another team when they're wrongly expecting that you'll help them?

How could a planet have erratic days?

How can Trident be so inexpensive? Will it orbit Triton or just do a (slow) flyby?

Why is so much work done on numerical verification of the Riemann Hypothesis?

Redundant comparison & "if" before assignment

Count the occurrence of each unique word in the file

Should I stop contributing to retirement accounts?

How can "mimic phobia" be cured or prevented?

How should I respond when I lied about my education and the company finds out through background check?

What should you do if you miss a job interview (deliberately)?

Create all possible words using a set or letters

Is this toilet slogan correct usage of the English language?

2.8 Why are collections grayed out? How can I open them?

What is Cash Advance APR?



WiFi Thermostat, No C Terminal on Furnace


How do I connect a WiFi thermostat to my furnace's primary control?Installing Honeywell WiFi ThermostatWIFI thermostat no C wireecobee3 Installation - Thermostat Y Terminal (yellow) Wire Connects to C Terminal BoardNew Thermostat installed but compressor comes on immediately0v at DC thermostat terminal in furnaceNeed help with wiring new Thermostat. Original 3 wire to Sensi EmersonOld oil furnace with 2 wire thermostat, installing new wifi and need C wire. How can I wire with my current stack switch?HVAC wiring for wifi thermostat installation (Ecobee) gas furnace + ACConnect Wifi Thermostat to Goodman GMP050-3?













2















Really hope someone can help me with this. I've looked through the other posts and can't find one similar enough to mine to answer. I've got an old gas furnace + AC and i'm installing a Sensi Wifi theromostat. There's only 4 wires and I cannot figure out how to do the G wire to C conversion because my furnace has no terminals. It looks like someone added a 24v transformer at some point and i think i can just tap into that for my new theromostat but i don't want to connect it incorrectly and damage something. I can easily run a new thermostat wire that will have 5 wires, but i'm unsure where to attached that new C wire. Any help would be really appreciated.
enter image description here










share|improve this question







New contributor




Paul is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
























    2















    Really hope someone can help me with this. I've looked through the other posts and can't find one similar enough to mine to answer. I've got an old gas furnace + AC and i'm installing a Sensi Wifi theromostat. There's only 4 wires and I cannot figure out how to do the G wire to C conversion because my furnace has no terminals. It looks like someone added a 24v transformer at some point and i think i can just tap into that for my new theromostat but i don't want to connect it incorrectly and damage something. I can easily run a new thermostat wire that will have 5 wires, but i'm unsure where to attached that new C wire. Any help would be really appreciated.
    enter image description here










    share|improve this question







    New contributor




    Paul is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.






















      2












      2








      2








      Really hope someone can help me with this. I've looked through the other posts and can't find one similar enough to mine to answer. I've got an old gas furnace + AC and i'm installing a Sensi Wifi theromostat. There's only 4 wires and I cannot figure out how to do the G wire to C conversion because my furnace has no terminals. It looks like someone added a 24v transformer at some point and i think i can just tap into that for my new theromostat but i don't want to connect it incorrectly and damage something. I can easily run a new thermostat wire that will have 5 wires, but i'm unsure where to attached that new C wire. Any help would be really appreciated.
      enter image description here










      share|improve this question







      New contributor




      Paul is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.












      Really hope someone can help me with this. I've looked through the other posts and can't find one similar enough to mine to answer. I've got an old gas furnace + AC and i'm installing a Sensi Wifi theromostat. There's only 4 wires and I cannot figure out how to do the G wire to C conversion because my furnace has no terminals. It looks like someone added a 24v transformer at some point and i think i can just tap into that for my new theromostat but i don't want to connect it incorrectly and damage something. I can easily run a new thermostat wire that will have 5 wires, but i'm unsure where to attached that new C wire. Any help would be really appreciated.
      enter image description here







      hvac






      share|improve this question







      New contributor




      Paul is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      share|improve this question







      New contributor




      Paul is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      share|improve this question




      share|improve this question






      New contributor




      Paul is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      asked 4 hours ago









      Paul Paul

      111




      111




      New contributor




      Paul is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.





      New contributor





      Paul is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






      Paul is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.




















          1 Answer
          1






          active

          oldest

          votes


















          2














          Wirenut A is where you should tap C at



          Since you have air conditioning, we can pull a little trick here. We start with the yellow Y wire from the thermostat, noting that it is connected to one wire going off to the outdoor unit (condenser) via wirenut E. Since we know that the thermostat is putting 24VAC from R onto Y to call for compressor, we know that the other wire coming back from the outdoor unit must be a C wire to complete the circuit. Following it, we come to wirenut A, which just so happens to be quite a convenient place to make the thermostat C-wire connection at.






          share|improve this answer






















            Your Answer








            StackExchange.ready(function()
            var channelOptions =
            tags: "".split(" "),
            id: "73"
            ;
            initTagRenderer("".split(" "), "".split(" "), channelOptions);

            StackExchange.using("externalEditor", function()
            // Have to fire editor after snippets, if snippets enabled
            if (StackExchange.settings.snippets.snippetsEnabled)
            StackExchange.using("snippets", function()
            createEditor();
            );

            else
            createEditor();

            );

            function createEditor()
            StackExchange.prepareEditor(
            heartbeatType: 'answer',
            autoActivateHeartbeat: false,
            convertImagesToLinks: false,
            noModals: true,
            showLowRepImageUploadWarning: true,
            reputationToPostImages: null,
            bindNavPrevention: true,
            postfix: "",
            imageUploader:
            brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
            contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
            allowUrls: true
            ,
            noCode: true, onDemand: true,
            discardSelector: ".discard-answer"
            ,immediatelyShowMarkdownHelp:true
            );



            );






            Paul is a new contributor. Be nice, and check out our Code of Conduct.









            draft saved

            draft discarded


















            StackExchange.ready(
            function ()
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fdiy.stackexchange.com%2fquestions%2f160481%2fwifi-thermostat-no-c-terminal-on-furnace%23new-answer', 'question_page');

            );

            Post as a guest















            Required, but never shown

























            1 Answer
            1






            active

            oldest

            votes








            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            2














            Wirenut A is where you should tap C at



            Since you have air conditioning, we can pull a little trick here. We start with the yellow Y wire from the thermostat, noting that it is connected to one wire going off to the outdoor unit (condenser) via wirenut E. Since we know that the thermostat is putting 24VAC from R onto Y to call for compressor, we know that the other wire coming back from the outdoor unit must be a C wire to complete the circuit. Following it, we come to wirenut A, which just so happens to be quite a convenient place to make the thermostat C-wire connection at.






            share|improve this answer



























              2














              Wirenut A is where you should tap C at



              Since you have air conditioning, we can pull a little trick here. We start with the yellow Y wire from the thermostat, noting that it is connected to one wire going off to the outdoor unit (condenser) via wirenut E. Since we know that the thermostat is putting 24VAC from R onto Y to call for compressor, we know that the other wire coming back from the outdoor unit must be a C wire to complete the circuit. Following it, we come to wirenut A, which just so happens to be quite a convenient place to make the thermostat C-wire connection at.






              share|improve this answer

























                2












                2








                2







                Wirenut A is where you should tap C at



                Since you have air conditioning, we can pull a little trick here. We start with the yellow Y wire from the thermostat, noting that it is connected to one wire going off to the outdoor unit (condenser) via wirenut E. Since we know that the thermostat is putting 24VAC from R onto Y to call for compressor, we know that the other wire coming back from the outdoor unit must be a C wire to complete the circuit. Following it, we come to wirenut A, which just so happens to be quite a convenient place to make the thermostat C-wire connection at.






                share|improve this answer













                Wirenut A is where you should tap C at



                Since you have air conditioning, we can pull a little trick here. We start with the yellow Y wire from the thermostat, noting that it is connected to one wire going off to the outdoor unit (condenser) via wirenut E. Since we know that the thermostat is putting 24VAC from R onto Y to call for compressor, we know that the other wire coming back from the outdoor unit must be a C wire to complete the circuit. Following it, we come to wirenut A, which just so happens to be quite a convenient place to make the thermostat C-wire connection at.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 3 hours ago









                ThreePhaseEelThreePhaseEel

                32.5k115097




                32.5k115097




















                    Paul is a new contributor. Be nice, and check out our Code of Conduct.









                    draft saved

                    draft discarded


















                    Paul is a new contributor. Be nice, and check out our Code of Conduct.












                    Paul is a new contributor. Be nice, and check out our Code of Conduct.











                    Paul is a new contributor. Be nice, and check out our Code of Conduct.














                    Thanks for contributing an answer to Home Improvement Stack Exchange!


                    • Please be sure to answer the question. Provide details and share your research!

                    But avoid


                    • Asking for help, clarification, or responding to other answers.

                    • Making statements based on opinion; back them up with references or personal experience.

                    To learn more, see our tips on writing great answers.




                    draft saved


                    draft discarded














                    StackExchange.ready(
                    function ()
                    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fdiy.stackexchange.com%2fquestions%2f160481%2fwifi-thermostat-no-c-terminal-on-furnace%23new-answer', 'question_page');

                    );

                    Post as a guest















                    Required, but never shown





















































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown

































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown







                    Popular posts from this blog

                    कुँवर स्रोत दिक्चालन सूची"कुँवर""राणा कुँवरके वंशावली"

                    Why is a white electrical wire connected to 2 black wires?How to wire a light fixture with 3 white wires in box?How should I wire a ceiling fan when there's only three wires in the box?Two white, two black, two ground, and red wire in ceiling box connected to switchWhy is there a white wire connected to multiple black wires in my light box?How to wire a light with two white wires and one black wireReplace light switch connected to a power outlet with dimmer - two black wires to one black and redHow to wire a light with multiple black/white/green wires from the ceiling?Ceiling box has 2 black and white wires but fan/ light only has 1 of eachWhy neutral wire connected to load wire?Switch with 2 black, 2 white, 2 ground and 1 red wire connected to ceiling light and a receptacle?

                    चैत्य भूमि चित्र दीर्घा सन्दर्भ बाहरी कडियाँ दिक्चालन सूची"Chaitya Bhoomi""Chaitya Bhoomi: Statue of Equality in India""Dadar Chaitya Bhoomi: Statue of Equality in India""Ambedkar memorial: Centre okays transfer of Indu Mill land"चैत्यभमि