How to Read Furnace Wiring Diagram

How to read a furnace wiring diagram. In this video I show how to "read" or follow the wires on a gas furnace wiring diagram. I go over a schematic diagram and a ladder diagram and explain how the different components get energized and it what order. The diagram I am using is actually a pretty simple one compared to many of the others out there. I selected this one because it would be easier to follow along on it. If you were out in the HVAC field though, preferably you should have the furnace operation manual along with the wiring diagram. The manual will tell you which components get energized, in what order, and how long they are energized for. As I explain in the video, the wiring diagram is not straightforward and unless you know how the furnace works, it will be very difficult to figure out the wiring diagram.
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🎞️ Videos Referenced:
How to Wire AC Unit:
• How To Wire AC Unit - ...
AC Wiring Diagram Full:
• How to Read AC Wiring ...
Furnace Sequence of Operation:
• How a Furnace Works - ...
Most Common Furnace Fix (Flame Sensor):
• Furnace Not Working - ...
Flame Sensor Troubleshooting:
• Furnace Not Working - ...
How to Check and Replace Ignitor:
• Furnace Not Igniting -...
10 Reasons Why Furnace Overheats:
• Furnace Overheating - ...
High Limit Switch Stuck Open:
• Furnace Not Blowing Ho...
10 Pressure Switch Problems and Fixes:
• Furnace Pressure Switc...
How to Troubleshoot Pressure Switch:
• How to Test Pressure S...
Furnace Error Code Basics:
• Furnace Blowing Cold A...
How a 2 Stage Furnace Works:
• How a Two Stage Furnac...
How to Check Furnace Inducer Motor:
• Inducer Motor Not Comi...
Flame Rollout Switch Tripped:
• Furnace Flame Roll Out...
Basic Thermostat Wiring:
• Basic Thermostat Wirin...
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📙 For Many More Furnace Repair Videos, Visit My Furnace Playlist:
• Furnace Playlist
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For More Repair Videos:
🔌 Dryer Repair Playlist:
• Dryer Playlist
🧺 Washer Repair Playlist:
• Washer Playlist
❄️ AC Repair Playlist:
• Air Conditioner Playlist
💧 Water Heater Playlist:
• Water Heater Playlist
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⚠️ Disclaimer:
This video is for educational purposes. All appliance and HVAC repair work should be done by a trained professional. Word of Advice TV is not responsible for any possible damages or injuries caused by the use or misuse of the provided information.
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#furnacewiringdiagram #howtoreadfurnacewiringdiagram #furnacewiringschematic #furnacewiring

[@WordofAdviceTV]

➡ More Videos For Further Information: How to Wire A/C Condenser Unit: kzbin.info/www/bejne/gXTEn417qLGJe6s How to Wire Thermostat: kzbin.info/www/bejne/jJzRp31vhbSMetE How to Wire Air Conditioner Compressor: kzbin.info/www/bejne/fZmlhYmkaqh7eKc 10 Ways to Splice Wires Together: kzbin.info/www/bejne/n5nTf3aMoJaffJI How to Read A/C Wiring Diagram: kzbin.info/www/bejne/aH62lpd3oM6lp9k How to Read Water Heater Wiring Diagram: kzbin.info/www/bejne/iombhKh-gJaYqbs Basic Thermostat Wiring Diagram: kzbin.info/www/bejne/oHWvq2aIerWHja8 How to Wire Indoor Blower Motor: kzbin.info/www/bejne/aoSbhY2aYplomLs How to Wire Outdoor Condenser Fan Motor: kzbin.info/www/bejne/jJ2wmamtp9Wco6c Is Common and Ground The Same Thing: kzbin.info/www/bejne/rZqudZ9_ocechpY Electrical Symbols and Meanings for Switches: kzbin.info/www/bejne/pJi0dKCIlNxsh7c Ohm's Law Explained: kzbin.info/www/bejne/qXqvnWqmlK9ki7c

[@muhammadahmadi2230]

I am an 18 year old service tech. Been working in the field for almost 7 months and yesterday I came across a problem where I didn't know what to do, and watching this video now I realize I might've ordered the wrong part 😁. Thank you for the very detailed explanation of the diagram. Will help me out a lot in the future.

[@WordofAdviceTV]

You're welcome! Glad to hear it helped. And a tech that says he never ordered a wrong part is a lying tech 😉 happens to all of us.

[@gaberuiz3913]

MY name is Gabe and 6 years ago i made a career change from installing Directv to AC Installer in Palm Springs California. Installing ac in the desert is hands down the hardest job I've ever had seen that furnace coils are in the attic so to change one out takes a good 6 hours at about 130 degrees. It isn't for everybody Ive recently switched from install to service and i have learned more from you and your videos than i did at the technical school i went to. You make it very easy for me to understand and I'm really impressed with how knowledgeable you are at such a young age. Good job dude and keep up the good work. You probably helping people more than you know.

[@chonyima7979]

Oh my gosh this guy explained way way much better than my hvac collage teacher..

[@gamer-zy5ro]

This guy explains everything better than my college teacher

[@Beyros]

Yes he does!!

[@RUDONODO]

Well, very well! This is the more illustrated and understanding troubleshooting tutorial I’ve ever seen. Thank you so much for kindness snd your valuable time.

[@joseamilcarlopez2846]

Love the way you teach! I’m sure many of us will learn a lot from the amazing way you lay out your lessons.

[@Ed-de3ro]

I just came across your video and I must say that this is one of the best videos I have found. Very well explained in great detail. I learned a great deal from this video. I'm looking to replace my one stage for a two-stage furnace. Thank you for sharing your knowledge with us.

[@navida4204]

This is a great and detailed way of going through a furnace wiring diagram. I really appreciate it. Thank you.

[@is-chitown-rael4551]

I went to Coyne institute here in Chicago I'm not in the field but I understand it better now looking at your videos I graduated with all my certificates but didn't have time to capture everything like I should or would have liked i couldn't let all that money go down the drain so I was focused on just passing for the most part, thanks for taking time out your life to teach, YAH is going to bless you for this, SHALOM

[@deltafour1212]

WTF?!?! Why doesn't this channel have a gazillion subscribers and views?!? These videos are gold! People, you need to wake up!

[@6121819]

Thank you so much for doing this video. Every time i try to read one of these I get so intimidated. This helps a lot!

[@barrymckauckner7201]

I am a g2 gas fitter and this was a very helpful video! Keep up the great work

[@TheFilthy13]

Great video !!! I actually followed the flow and logic on what turned on and why ! Thank you so much for explaining how each stage turned on and off as heat or cold is called for.

[@WordofAdviceTV]

You are so welcome! I'm happy that the video was easy to follow, that's what I hope to always do 🙂

[@sepehryazdani5560]

Thanks for sharing your knowledge and experience, a rare feat these days.

[@JL-kr4jd]

Awesome instruction!!! I’m comfortable trouble shooting my furnace now! All your videos are KA!!!

[@fernandofrancisco3106]

Crystal clear for explanation how the heating operates. Good job!👍

[@AZ_sunshine]

Ben, I'm a subscriber and have watched so many of your outstanding KZbin videos (as well as others) and have to comment today that you are the KING of HVAC troubleshooting. First of all, your videos are produced with viewers in mind rather than self-promoting for profit or acting like a celebrity. You’re a knowledgeable instructor and articulate with a calm voice that’s professional and confident (not a bunch of ums etc.). The exemplary content indicates the time and effort that put forward in rehearsing, preparation and editing of your videos. There’s no excessive “blah, blah, blah,” background noise, distractions, or crazy music. Your videos are interesting, auditorily crisp, visually appearing and focus on the title’s objectives with a balance between repetitive info & assuming viewers’ prior knowledge. You accomplish this by referencing related content videos available for viewers to consider. You present simple and clear simulations, actual components, real-life situations and include graphics and text highlighting important info, safety issues, key points, confusing content and alternative methods for troubleshooting. For all this, I thank you for helping HVAC professionals as well as the DIYers like myself.

[@fortunatedad7695]

This is an awsome explanation of the sequence of a furnace! I have my B Gas and have limited experience with furnaces, but this really helped give me confidence in being able to diagnose a furnace. Thank you very much!!

[@WordofAdviceTV]

You're welcome, I'm glad it was helpful! Become a legend out there! 🙂👍👍👍

[@8724jimmy]

Yes, you did a great job to create this precious lesson for everyone. Would like to share with your audiences. (free free to edit as needed.) I resolved my Furnace problem without changing a part but fix an open in the 6-wire thermal state cable. Without your lesson, I would have no idea how to track and judge where is the problem but changing parts. It's an 93' Comfortmaker gas pack. Problem starting 3 yrs ago, getting worse until this winter it finally wont ignite at all, March-2023. At beginning, symptom happened only in very cold weather, around 30-35 F. It resumed functioning after I cut breaker off for 5 - 10 minutes, and it would last the whole winter. It got worse year after year, more frequently, yet trouble happened in the same temp range. I checked and suspected all Limit switches, CS-IM, and even transformer. Ordered those parts to "give it a try". While waiting the delivery, I watched your video and it opened up my brain with accurate knowledge. I started all over previous checking steps, and identified "the thermal state signal was not present at control Bd terminal." I removed thermal state from wall and connected close to gas pack side, finally, narrowed down to the point -"white line" was open. Issue fixed and I can enjoy a warm sleep for the weather supposed to be cold again around 28. Thank you

[@weslawsonsilverback]

Dude, you are SO underrated, u should have millions of subscribers. You are detailed and concise, even a high schooler can learn plenty from you bud!

[@5822huron]

Older techs are assholes. Too prideful to listen to younger techs.. I see it everyday

[@WordofAdviceTV]

@Wes Lawson Thank you Wes!! I appreciate that 😄😄 If the almighty KZbin algorithm feels like it, perhaps one day the subscribers may go over a million. I wouldn't complain about that lol. 😇 Glad you enjoyed the video!! Have a great rest of the weekend!

[@WordofAdviceTV]

@Straightoutofchiraq I've been under the mentorship of a few of those before too so I think I know what you mean.. But those older guys really do have a lot of knowledge. Perhaps not much about the high end new stuff but years and years of experience does make a difference. I've learned some really cool stuff from really grumpy about-to-retire techs. As long as I shut up and was respectful, most of the time they were willing to impart some wisdom upon me. 😄

[@5822huron]

@@WordofAdviceTV Never had a mentor in this trade. But I will leave it alone

[@FullyLoaded1000]

Excellent! Good way to speak clearly with good tone to keep attentive but not too cheesy lol. Love the pictures you used to follow along (real world examples) and the color code helps too of course when using the blueprint drawing to detail circuit logic and current travel paths. Helped me a lot and was a review for me, will be checking out the other topics listed in the description thanks.

[@tomlucas1773]

Best video I have seen on HVAC to date. Thanks Jay!

[@dankelley9361]

Jay, excellent tutorial! Thanks for all you hard work & share of information in your YT videos, really awesome job!!

[@johntang6207]

You are the best teacher

[@simplescrapping]

Greetings from Greece from a hvac technician. Keep the good work... and merry Christmas to all😁

[@anthonytran98290]

You are great person man ! Thanks for taking your time to teach us.

[@sarbbhamra6758]

Thank you so much for all the details explaining. God bless you.

[@mostlikelywedoitservices6926]

Really enjoyed the time you invested in this one.

[@johnerway7255]

Super job, you make it seem so easy, that's your skill level. Thanks so much.

[@paulmauricio3600]

You are awesome. This is exactly how it is taught. You’re doing a great thing

[@WordofAdviceTV]

Thank you! Glad to hear I showed it correctly 😄

[@fernandofrancisco3106]

Thanks for sharing your knowledge to everyone.

[@luiselizalde6757]

Excellent video, you really have the skill to explain, thanks for those excellent videos. Have a wonderful time.

[@luongly8157]

All I can say are thank you thousands and thousands times , have a great Christmas to you and your family

[@WordofAdviceTV]

You're very welcome! I'm happy you liked the video that much! We hope you and family have a Merry Christmas as well!!🌲🌲🌲 God bless you and yours!

[@carlosjar2734]

Thanks for this video. Haven't seen furnace explaining wiring diagram .Thanks again. I love the ac wiring diagram

[@WordofAdviceTV]

You're welcome! Glad you liked the wiring diagram videos 🙂

[@arkansasdippin5926]

Been watching your videos recently. I’ve been in the field for 3 total years but on and off with oilfield work. I’m very confident with Condensers, fairly confident in furnace and control board troubleshooting, but I would like to see a video on heat pump troubleshooting AHU and the actual Heatpump itself. That’s where I second guess myself for some reason

[@bnguyen92379]

Best presentation ever. Thanks.

[@leonking9622]

This video is so dope. It's clear cut.

[@hectorarroyo4672]

Thank you for your videos I will be starting HVAC and I learn a lot from your videos.

[@WordofAdviceTV]

Great to hear that! Good luck with the career. It's a great path to take! I have no regrets taking it 😎

[@uanta866]

Thank you very much. I was much educated by your explanation.

[@ShelterG]

This is best explanation I ever seen) Cool! Thank you!

[@Ron-vv4ie]

Excellent information and well laid out.

[@WordofAdviceTV]

Thank you Ron!

[@robertmunguia250]

Awesome. Learning more here than anywhere else. Great job.

[@WordofAdviceTV]

Great to hear that! Thank you!

[@jdubya54]

As usual. Excellent video. Thank you

[@ajprudence6235]

Thanks, learned a lot from you lesson even with my electronic engineering background,

[@johnconrad5487]

Thanks for making this video. It is a great help

[@jhonatanoyarce4488]

this was a great video, I always learn a lot with you, thanks for making this valuable content!

[@karlosdozxa3609]

Excellent and simple understanding for home owners.. thanks a lot.

[@WordofAdviceTV]

You're welcome! Thank you for watching and commenting 🙂 have a great rest of the weekend!

[@karlosdozxa3609]

I recommend you to open a business q&a, advice and help online and make some profit.. sometimes they are simple questions you can answer .. thanks

[@WordofAdviceTV]

@Karlos Dozxa That's an interesting idea. Thank you for the suggestion!

[@raulrobles2961]

New to the field and this video helped a lot. Thank you so much. Have a safe and happy New year.

[@WordofAdviceTV]

I'm happy to hear that! Have a Merry Christmas and an epic New Year as well!

[@harrychang9376]

you are just like a college instructor, very very good !

[@bernymozar2195]

Thank you very much for your video you are a great teacher.

[@dondon8398]

Wow, you know so much in detail.

[@packrat76]

Assuming you live in southern Florida. Nice there early and late in the calendar years. Hot and humid and uncomfortable in the summer obviously. The state college I attend had a link for this video, but I see all the other great videos you have put out there as well. I'll be watching more of your videos and I have subscribed to your channel. Thanks for helping out by making these videos.

[@donalddavis3308]

You said the high limit switch goes to #5, it looks like you connected to #8. I could be wrong though. Thanks for taking the time and effort to share your wealth of information.

[@WordofAdviceTV]

Yeah.. Those connections are close to each other and I was using thick markers which doesn't help.. I was indeed wrong, the two wires from the limit switch actually go to 11 and 6. I just looked at the paper version of it right now. What looked like a 5 to me was actually a 6 and the 5 is next to it. Thank you for catching the error!

[@Joeelectronicschematicsforauto]

Great explanation and great video this is how it's supposed to be done with wire

[@lvny3614]

Great job explaining and illustrating the diagram.

[@WordofAdviceTV]

Thank you! 🙂

[@Honestandtruth]

It's good to See that you are Healthy and well.... Keep doing of what you know best and Stay Safe...👍👍

[@javonkemp2550]

Thank you so much man! Great video

[@PBS-nm1uu]

great presentation, this is the best of the best.

[@habtamusium8646]

Every thing lovely explained ! thanks for this Methodology

[@gerryorangefan6150]

Great Explanation sir.

[@miguelramos2213]

GREAT VIDEO !!! THANK YOU

[@dominiquepierre916]

Very great video ,Thanks a million .

[@mohamedfadoul8800]

really your illustration is benefit full God Bless you

[@manuelsarmiento539]

You do a great job,we are learning a lot with this kind of videos,congrats,you have a good merry Christmas with your family.

[@WordofAdviceTV]

Thank you! Glad to hear the videos are helpful. I hope you and family have a Merry Christmas as well! 🌲🌲🌲

[@fritzrobfern8154]

Thank you so much for sharing this video..I learned a lot how to read a diagram...thanks jay

[@WordofAdviceTV]

You're welcome! Glad to hear the video was helpful for you 👍👍👍

[@l.crossjr]

Great info. Subscribed. Boilers next please

[@oliviassekitoleko7204]

Thanks for video it has been really helpful

[@Tito-hvac8]

Great vídeo!! Thank you 👍

[@adconx98]

Great job!

[@HsingSun]

Thank you for your video. My air-handler does not have control board, but it is an old ac system. However, it is good to learn some stuffs from this video.

[@gilmaravellaneda820]

good job, excellent explain about diagram.

[@Behadlax97]

Super super good ,thank you

[@ramchillarege1658]

Very nice. thank you.

[@wadestrand3002]

GREAT VIDEO THANKS

[@BenjaminSahlstrom]

You're knocking on the door of 200k! Congratulations!

[@WordofAdviceTV]

Thank you Ben! You're already at 150k too! Congratulations are due to you as well bro! I am sure you will get past 200k in no time. Merry Christmas to you and family my friend!! God bless!

[@salvatorejoey4828]

Sorry to be off topic but does someone know of a tool to log back into an instagram account? I somehow lost my password. I appreciate any tricks you can give me.

[@augustuszain6378]

@Salvatore Joey Instablaster :)

[@salvatorejoey4828]

@Augustus Zain I really appreciate your reply. I found the site thru google and Im trying it out now. I see it takes a while so I will reply here later with my results.

[@salvatorejoey4828]

@Augustus Zain it did the trick and I actually got access to my account again. I am so happy:D Thank you so much, you saved my account !

[@bertrand100ful]

Hi from Paris France! Y'r the best my dear. I realy like you and i like yr videos too. Regards.

[@orlandosaavedra1189]

This is the video I was looking for thank so much

[@WordofAdviceTV]

Awesome! Glad I made it in time then 😉 Have a great rest of the weekend!

[@robertnocerajr3985]

Great message here thanks for sharing this message

[@vtrandal]

This excellent video convinces me there is a community of hackers that rewire their furnaces using any number of controllers such as Raspberry Pi.

[@pablogomez4665]

Once again awesome

[@paulrozinski1488]

Great to see you again Jay. Enjoyed the video. Your previous videos saved the day several times here in cold NYC. Bet you don’t get many “heat” calls there in HI. Noisy birds !! 😂

[@WordofAdviceTV]

Thank you Paul! Glad you enjoyed the video and the bird 😄 It's great that the videos saved the day a few times for you. Yes you are right, furnaces are pretty scarce here. Where I am right now, winter is around 75 degrees all the way through.. 😎

[@bazokazoro4563]

Magnificent 👌never got a perfect explanation .

[@bazokazoro4563]

Sir can you please explain to us how voltage flow through a washing machine board & what’s the function of the components in that circuit...

[@dmaverick2396]

Very well done sir ....thanks.

[@jawedhasan6195]

Excellent job👍👍👍👍👍👍👍👍👍 Thank you very much.❤️❤️

[@chadrayl9648]

Fantastic!

[@dubjay1329]

great video!!

[@hawkeye7435]

EXCELLENT!!! THANKS...

[@hkhsm359]

great knowledge, great explanation.. thanks for sharing

[@WordofAdviceTV]

Thank you! By the way, nice profile name with the Charizard! 😄 Back in the day I beat the whole game on gbc with just him. (I forget which version) Level 93 at the end 😅

[@eissam4436]

Thank you man

[@isuckondemtitteas1974]

Awesome video

[@Eddy63]

Bob Ross would be very proud of your painting ... Lol ... And I wouldn't ''udder '' a word about my mother in law ... Lol ... Great presentation Jay ... Hey to cameraperson ... And if you couldn't find your green grounding pen ,you could always use that Gecko ... I kill me ...Lol

[@davidmckinney6577]

Hello eddy say hello to trixie for me and Arnold and bigfoot ✌️🐕🐕

[@WordofAdviceTV]

Lol! I love the wit in all your comments Eddy 😄 They're always fun to read. Hahaha use the gecko... 😂 Your "I kill me" phrase reminds me of the egg joke. I won't spoil it here and leave it for the next video. Actually I think the next video is a mayonnaise video where I wont be talking.. Hmm.. Maybe in 2 weeks then. (these non-hvac videos drive some of my subscribers up the wall hehe 😇 )

[@Eddy63]

@@davidmckinney6577 Will do ...

[@wendymiles260]

Awesome!😀

[@harrydickson4575]

Another excellent video 👍👍👍

[@WordofAdviceTV]

Thank you Harry! I appreciate your presence in the comments section 🤙🤙🤙

[@nelsonv3917]

Wow brother this is a great video. Thank you for all that good information.

[@WordofAdviceTV]

Thank you and you're welcome! I figured that after that fly video I need to follow up with something worthwhile 😄😇

[@PTN164]

Thank you for sharing a good video. Wishing you happy Christmas and happy New year. God bless you

[@WordofAdviceTV]

You're welcome! Thank you and we wish you a Merry Christmas and a Happy New year too! God bless you and family!

[@lanthonyperdum6430]

Great video...Thanks a million !!!

[@WordofAdviceTV]

You're very welcome! Glad you liked it!

[@isscotty2hotty]

This guy is awesome

[@joeozzie1]

Nice work!!

[@WordofAdviceTV]

Thank you!

[@nittlenits101]

Lol I can hear those Hawaiian birds in the background!! Giving me shivers!!!