Furnace Blower Not Working - How to Check It

Is your furnace blower motor not working and there is no air coming out of your vents? Perhaps your blower motor has burnt out and you need a new one. Or maybe it is just simply not getting any power therefore not turning on. In this video I show you how you can check if your HVAC blower motor is bad or if it is the control board that is defective. Be safe when you perform these checks and make sure you have the power off when touching any uninsulated parts of a wire/connector. Also, there are many different kinds of furnaces and control boards so do not take my example as law. There can be variations to how the wires are hooked up.
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[@WordofAdviceTV]

⭐ Other Helpful Videos: Top 5 Furnace Problems: kzbin.info/www/bejne/imWsiKeBrpJgjM0 Top 5 A/C Problems: kzbin.info/www/bejne/fYC7mJekh6drapI Furnace Sequence of Operation: kzbin.info/www/bejne/d4KnkICbma6eoqs Furnace Error Codes Explained: kzbin.info/www/bejne/gGm9lpqjabl2oq8 How to Read Furnace Wiring Diagram: kzbin.info/www/bejne/aH62lpd3oM6lp9k How to Read AC Wiring Diagram: kzbin.info/www/bejne/f17Wc2d9ftGVopY

[@silentARP]

9

[@robertcontreras8813]

Im a hvac service tech for 15 years and i have to say i still go to ur videos if i get stuck on a problem u explain it very simple and easy

[@WordofAdviceTV]

Thanks Robert! Means a lot coming from a veteran tech :) I will try not to disappoint with future videos :)

[@cyanidex]

I've spent hours watching your videos, troubleshooting and cleaning my entire system, just to find out that my wife turned off the switch for the furnace because she didn't know what it was for. Make sure to start at the very beginning, folks! Even if you think the switch should be on... you just never know. :P

[@masonoltman5891]

Christmas Vacation anyone?! 😂

[@abnormalryu8776]

this happened to me for the condesor unit !

[@jimmyngo7133]

It is good to intall an outlet like my .Problem solved and never accident switch to off by someone else and safety also.

[@edmatthews9235]

Omg thats crazy. I may Put a marking on my Furnace on off switch dont touch. Mine is a large Red one so that helps but would not hurt.

[@haroldpierre9946]

I was in panic when my furnace blower motor was heating and stopped to work after 2 minutes running. With your very concise and helpful video, I was able to fix my issue with a new $5 Capacitor. Keep up the great work!

[@TheDocalphabet]

Our upstairs AC unit was making a loud buzzing noise and there were no cold blowing from our registers. Stopped power to the unit assessed the problem squirrel cage was hard to hand turn…pulled out to find motor bearings were burnt. Meanwhile an electrical storm rolled through our area last month during that event we decided to turn off the down stairs unit. Soon after the storm cleared went turned on the unit with no success. I did everything possible to get it going again. We called the HVAC tech and was quoted $1500 for a new motor…..ahhhhh what? After a few weeks of you tube videos I always came back to yours. My upstairs unit motor bearings were burnt so replaced the motor and capacitors for $179 and 3 hours of my time. Now to trouble shoot the downstairs unit repeated all the hacks on resetting to no avail. Back to your video……had the jumper by pass the board and VOILÀ….AC functional now I need to shop around for a new circuit board. Thank you so much. DIY Dude

[@malloryford9519]

Dude. I’ve worked with my dad for his A/C & Heat business for a good chunk of my life & you explains this so well. In terms where everyone can understand. Keep it up!!

[@michaelfinnegan4301]

OUTSTANDING VIDEO! I'm no slouch, but I know nothing about HVAC. Friday night of Memorial Day weekend My 80 yo mother here to visit and the AC quit. It was 85 degrees in her room. I watched your video, I was able to diagnose the issue easily (it was the mother board) and was able to jump the mother board to keep the fan running and cool the house since everything else was working. One of the best how too videos I've ever watched. Simple, concise with great solutions. Thanks man! Gave you a thumbs up and subscribed.

[@LaudiumEnoch777]

You are VERY good at explaining how easy it is to troubleshoot EVERY part, therm, furn board, caps, condenser. I have seen a lot of youtube videos and you are by far the best I've seen. Bravo! People need to realize that things CAN be FIXED and a lot of the time its not that hard.

[@WordofAdviceTV]

Thank you! :) Glad to hear you found my videos helpful! And I definitely agree! Many times the required fix is actually not that hard.

[@abiynery]

Yes I have seen another one of his videos also. He is an excellent teacher.

[@omarzambada8507]

🍔🍔🍿

[@robertwashington2759]

Fantastic! You explain every step Safely, and in clear detail. Thank you!

[@10acScottyP]

Agreed!!! Very easy to follow and understand. Fixed my dryer after following one of his videos just a couple weeks ago!!

[@wendelwillis]

What should be be the trouble shooting sequence if the blower doesn't work, even with the ON position on the thermostat. AND, compressor and condenser fan won't start.

[@PROJECT.LUKE.ONE.75]

With your thermostat calling for either heat or cool (for cool, the outside unit should be running), thd G wire should then turn on the blower motor at the furnace. If it's not, check the motor for voltage. To check for power (voltage), start by checking where your fan wires go into the control board. The black wire is normally high stage, which goes to cooling; heat is normally low stage, which goes to heating. Depending on which AC season your testing for, you will pull that wire off. Next, find where your common wire is coming from the motor (usually labeled circ. or circulator) and pull that wire off the control board as well. Place one lead on each spade that you've pulled a wire from. There should be a 120v present. If you have 0 volts when the fan should be on, then the problem is a defective control board. If you do have 120v present, and the fan isn't coming on, then the blower motor is bad. To test without a meter, find the wire for line voltage coming into the control board usually coming from the door switch) disconnect it, and depending on which AC season your testing for, pull off the high or low stage wire and bypass the control board by connecting the two wires together. If the blower comes on, the control board is bad. If it doesn't come on, the blower motor is bad. To temporarily get by with cooling or heating until the board is installed, you can connect the two wires disconnected wires to a spade splitter (bending the split) and connect the other end into the line voltage on the control board. This will send power directly to the motor through the power switch, bypassing the control board.

[@rruizproductions]

Will the blower motor run continuously during bypass?

[@michaelmaison5592]

Levi you're great!

[@tyler5662]

when you are actually physically showing what you're talking about it makes way more sense then just looking at a power point slide. this is an easier way to learn something in a few minutes then listening to lectures for hours

[@BigAsDiecast]

You are absolutely amazing brother! God bless you for all that you do for the HVAC community. You are a great teacher. You have no idea how much I have learned from you. I wish there were more people like you in the world. If I may, I would like to ask you a question about meters. Is there a big difference between the meter you use and the UEI 389B?

[@thepoliticalmechanic2691]

This is probably one of the best how to videos I've seen in a long time there is a lack of nonsense commentary, a shill about some dumb sponsor and ear raping intro music and I absolutely love it

[@ronnmiller9085]

Guess this is an old bunch of video's and he doesn't check it anymore, guess i need to go find someone who does service video's on more than just their [personal furnace split unit!!

[@darrellr267]

Couldn't a bad limit switch be keeping the blower motor from coming on? My blower won't come on with a/c or heat. Just replaced the capacitor and nothing. My flashing led light says limit switch fault, but shouldn't the blower motor still come on in a/c mode. The led reads normal operation with the a/c on. Also reads normal operation for the heat when first turned on. The burners fire up, but no blower motor. After about 3 mins the burners will turn off, and the led reads limit switch fault.

[@Lolcowhunter022]

Ive been without heat for 2 days and have watched countless how to videos. Yours nailed it!! No more freezing!! Thank you!!!

[@WordofAdviceTV]

Good to hear! :) Stay warm!

[@erlpen2016]

All you have to do is what I did move to Dana point in California and you never have to pay another bill related to air conditioning….in fact you won’t need an ac unit….

[@Lolcowhunter022]

@@erlpen2016 🤣🤣

[@surfyogi]

I really liked this comment, I will quote it, it's important: "I realized the motor bushings were out of oil, and it couldn't overcome the initial friction to start, as it was hard to turn and the motor was very hot if you did get it to run. Anyway I saved 175 bucks on a new motor by taking it apart and re-oiling the felt pads on the two bushings in the blower motor. It would not be hard for some people to do if you are mechanically inclined. Some motors may have oil ports, if they do I would use them."

[@keithhoward8651]

Really like the way you do your videos sure does help me a lot I’m still learning this stuff. Thanks for taking the time to explain each step and the tech tips. Keep them coming.

[@kdpcorp]

Best repair video. Incredible instructions. You caught all the little things. Examples: Break off screws, remember to center fan wheel, tighten screw... Thanks for posting.

[@duaneshadd1070]

If the capacitor gets wet due to basement flooding would that cause air condition not to work??

[@mtthielsen8342]

I love your videos, and wanted to add something that happened to me, I'm not an HVAC tech. My motor would not start, even after I heard the relay click on, so one would assume the start capacitor. This theory was also reinforced when I had to hand start the fan (not recommended if you don't know about this stuff), but it still had trouble starting and I realized the motor bushings were out of oil, and it couldn't overcome the initial friction to start, as it was hard to turn and the motor was very hot if you did get it to run. Anyway I saved 175 bucks on a new motor by taking it apart and re-oiling the felt pads on the two bushings in the blower motor. It would not be hard for some people to do if you are mechanically inclined. Some motors may have oil ports, if they do I would use them.

[@josepenado6068]

Working on ac is not easy because companies keep building more newnstuff very confusing most costly for home owner now this days they got emc motors etc

[@meTimetraveler]

it's quite possible the motor start capacitor is fully charged 1. you can get a real jolt 2, if you connect the capacitor at this state to your meter, the meter will be fried. You should try and discharge the capacitor before anything else. Touching an insulated handle screw driver to the bare metal contacts will do this BUT it is really bad for the capacitor to discharge this fast. you should use something like a 5k 5 watt resistor.

[@jonnelson7917]

I’ve been through a lot of videos. Your channel is the only one that is helpful. I now have heat again. Keep up the good work.

[@WordofAdviceTV]

That's what I love to hear! Good that you were able to get the furnace fixed! Thank you for leaving a comment, stay warm!!

[@sonnyj9705]

You stole my comment

[@mahmoudibnemir8704]

Your videos are great! I always learn a new way of doing something and you explain everything perfectly!

[@rmartini6952]

Blower motor was replaced on firnace. Now when heat kicks on it sounds loud like a bathroom fan!! Tech told me because its new and doesn't debri like old one??

[@normanmau1352]

Thank you for the furnace videos. Based on your information like feeling for a hot motor, I saved labor cost (est $200) on the furnace motor replacement by replacing the motor myself. This task was my first getting into furnace motor using area. I had by pass certified Hvac Mechanic requirements by looking for local motor supply house as well known ones would not sell to me. I know the motors are available on line but I wanted talk someone locally. Anyway thanks again.

[@joesapia9732]

Appreciate all your how to videos make my life so much easier helping friends and family

[@BenjaminMedlock]

I cannot say this enough, you sir saved me so much money. I did your multi meter checking and determined it was my control board. Thank you very much for making this content. I was able to do all the work my self for $100 and not waste money throwing parts at my system.

[@robertdean6222]

When my furnace calls for heat it goes through the proper cycles and when it’s time for the blower motor to kick on it does kick on however after about 15 minutes the motor gets so hot it shuts itself off. I replaced the capacitor thinking that was it but it’s still doing the same thing ,now if I let the furnace cool and turn the switch off for 10 seconds then back on it will work again for 15 minutes until the motor gets so hot it shuts down again. Do you think the motor is bad ? Is there some safety device kicking the blower motor off when it gets so hot? Thank You BTW: Great videos like and subscribe everybody !!!

[@AdmiralPureBlood]

Man, I’m so glad I found your channel. Blower motor is turning on and it’s going to hit 95 today. I was lost yesterday watching others videos. Other channels speak as of every day men went to school for HVAC. Thank you brother i know now I can at least figure out the issue

[@tomference4618]

..a little deep for the average layperson. Following your close direction, success can be realized.

[@redwhiteGT500]

My concord eighty furnace keeps eating electronic boards Third one and three years. I just did the piggy back wiring so we can have ac tonight. Thanks for the help

[@UNITED2009100]

Do they allow gas pipe unions inside the cabinets where you are???????

[@khalidchouffani2755]

Correct me if I am wrong but if you hot-wire the power to the blower motor but wouldn't the blower motor run indefinitely regardless of the set temperature on the thermostat?

[@geeex5783]

I know nothing about furnaces, HVAC but I watched your video and read the comments from the pros below and just wanted to thank you for making a video that is very detailed and in language that I almost understand... Lol! Well at least I know what to ask my professional HVAC service guy!:)

[@franciscoruiz1452]

You don’t need to cut anything, just disconnect the wire coming out of the door switch, (120v) and connect the wire from the blower directly to the door switch

[@WordofAdviceTV]

That is the easiest way! Thank you for pointing that out

[@Jamie-po9zk]

This is incorrect actually.. if you do this you wont be sending a 24v signal to the outdoor unit. By disconnecting the line voltage from the circuit board, your 24V transformer is not getting any power, therefore the outdoor condenser contactor will not pull in. Only the blower will be powered.

[@thetruth6072]

I think that's the point...to c if the blower actually works 🤦 you don't need 24v for that...dhaaaa

[@MrCalrichy]

​@@Jamie-po9zk0qqĺ

[@JoeGarcia-cg1pp]

Today I did that and had a short from the blower motor tying those 3 together I will never do that if the board doesn't send 115 its a board for me

[@ProsperInHealth]

Thank you for donating your time to make this video. Because of you, I was able to diagnose my HVAC problem.

[@WordofAdviceTV]

That's good to hear! Glad I could help!

[@YaverEkemen]

awesome video, after i replace the motor still wasnt turning on, i used this technique to bypass and motor turned on, now i know i need a new board

[@randyrivera1089]

nice ill try to do this...blower wont start.. good explanation..

[@MrG-hm7xs]

What about on a package unit and the indoor blower is barely spinning and the cap is good does that mean the motor is bad

[@ericv3975]

Hey, my furnace turns off when it’s desired temperature is reached but the blower is still going. I was told that the blower is only Like 20 rpm and needs to be replaced. I have a 27 year old Trane XE 80. Do you think it’s the blower? And if everything else is working fine should I just replace the blower and not the whole furnace? Or replace? Only a 1-yr homeowner so would love your advice. Got my wife and 2 babies also so we don’t want to freeze 😅

[@dennisrandall8040]

I bet it was your fan relay. Be interested what you found.

[@mandoenrique2038]

I checked, and I didn't find a capacitor for the furnace. The brand is Lennox, manufactured in 2018. I only saw two small boxes, and I believe one of them might be a transformer, but I'm not entirely sure. Could it be possible that I don't have a capacitor for the furnace?

[@WordofAdviceTV]

Yes. If you have a variable speed/modulating motor, those don't need any capacitors. Being that its a new furnace its very possible you have one of those.

[@bobvila4381]

After 3 trips to the supply I was able to install a brand new motor and squirrel cage. Your video made my job about 1000% better then it would have been had I just went for it without watching.... Thanks, Subbed!

[@smothukuri1]

You saved few hundreds of $ , I did this by my self after ordering the parts. Thank you so much. Yes it took some time compared to a technician. You are amazing on explanation of details.

[@Salama_7]

Hi, I’m just a homeowner, I’m just curious why didn’t you check resistant on the blower motor? you are doing a very good job here🫡🫡🫡 Thanks ❤

[@WordofAdviceTV]

Thank you! In this case it is unnecessary. If the motor is getting power yet it does not come on, it's for sure a bad motor. No need for further investigation. In the field this method simply works better and faster for me so I rarely ohm out furnace blower motors.

[@TheSarkons]

Thank you for these videos. They are very well put together. My blower motor works 8 out of 10 times. My blower motor will come on if I turn the power off, rotate the motor slightly (1/16th of a turn). Then turn power back on. I can also make it come on by smacking the side of furnace near where the blower lies. I have tested the cap and it appears to be fine. The blower motor spins freely with no resistance at all. Could I assume that the motor has a dead spot and is need of replacement? Or should I get the blower motor rewound?

[@TheSarkons]

Turns out the capacitor was the issue, it was working intermittent.

[@ps3moe314]

Thank you for sharing your knowledge with the world. Much appreciated. What should i do if the everything works except the blower needs to be manually spun to start? It runs perfectly after i hand spin it.

[@WordofAdviceTV]

You're welcome! Sorry to hear about the blower troubles! Either your capacitor is dead or that blower motor is on its way out.. If you have a multimeter, it would be nice to check the capacitor otherwise just start by replacing it. Hopefully you won't need to replace the motor.

[@joralriver9052]

Hello, furnace blower stopped working I changed cables to high speed and started working again, it was on medium speed when stop working. What issue could be?

[@jimkerr4321]

Loved your video. I was sure it was going to be the blower motor but using your tests I determined it was the blower control board and was able to source the part and install it myself. Thank you!

[@garykoh263]

Your videos are great. I have not found a solution yet to my thermostat problem. I have hot wired the RH and W1 to bypass the Honeywell HZ322 damper control panel and Nest thermostats. I can get 24V + at the Nest thermostat and I tried hot wiring the RH and W at the thermostat but it does not call for heat. So any advise?

[@jimkerr4321]

@@garykoh263 Not my videos and I'm no expert but rather than messing with the thermostat wires, just test the wires he suggests.

[@jnelson216]

I have a nordyne 703911b furnace it sneaks real bad when carefully reach in left side and spin the s cage and it takes off. What’s my problem why it doesn’t take off on it’s own

[@jnelson216]

Squeaks not sneaks

[@moagir80]

normally is the 10uf fan capacitor.

[@gtpluvr]

Turned on my 2yr old furnace last night with no air coming out of my vents, but the AC and regular fan works great. Why is the furnace the only one not blowing air? Oh, there are NO lights visible in the little window in the front, are there suppose to be?

[@WordofAdviceTV]

I would start by bypassing the thermostat at the furnace control board and see if the furnace starts up then. (jumper R to W) If the furnace turns on, then the problem lies in the thermostat or the wiring going to the thermostat.. Here is a video on how to bypass the thermostat at the board if you need it: kzbin.info/www/bejne/mJ69lGpsqsuHhLs If it does not turn on, then it could be a few things... It would help if the furnace was blinking an error code. I would take the furnace doors off and tape shut the door switch. That will help locate the LED light.

[@Brewske1]

Is there somewhere you have a link to buy the splitter you show connecting the two female wires to the male? It’s Sunday so I went to Ace, Lowe’s and Home Depot with no luck finding it. I was able to isolate the problem to the control board so yeah and thanks🎉😂!

[@WordofAdviceTV]

You could simply snip the wires and wire nut them together too and then use a pigtail (third wire) to hook up to the male terminal.

[@longracing25]

Love your vids, thank you. I have typical issue. Furnace comes on, blower motor hums and heats up...doesnt spin SOME times. Start manually...it will get going. I started with cheapest, capacitor. About same results, worked for a day maybe. If a motor is bad, wouldnt it not work at all? Obviously its getting power, new capacitor should be giving kick...would a failing motor work "some" or with a manually bump? Blower fan spins free, no binding also.

[@MORC]

Thanks, you’ve helped me with two furnaces in two different houses. Both had blower motor issues. I was able to confirm this latest one with the “Hotwire” technique. I made a simple jumper wire with blade connectors and just plugged it in, switched the unit on with the door switch repressed and heard buuuuuuuuzzzzzzz. No spinning but it did get hot! Bingo bad blower motor. Now to replace it 😢 Thanks again!

[@hectormedina9009]

check wiring black, fan motor circuit of course

[@lordmechanic]

I have a blower motor just making a loud humming, not spinning. I checked the run cap and only got 3.4 mf when it was supposed to be 5 mf. I replaced the cap (new one tested at 4.9 mf) and it still won’t run. I even gave the squirrel cage a hard spin and then engaged the interlock switch and it won’t stay running. Motor is probably 35 years old plus. I suspect that I might have a bad motor? Maybe I lost a winding?

[@wisamjumaa8936]

Great videos, thank You. My problem is the blower motor turning ON-OFF for short cycle, the outside unit keep running while the inside unit is going ON for 1 minutes then OFF for a few seconds and so. Is the blower motor going bad or the board? thanks again

[@WordofAdviceTV]

You would need a meter to be able to confirm which it is.. If the motor is still getting power when it turns off like that, then you know the motor is bad or the capacitor for it is weak. (if you have a variable speed motor, that would be harder to check as you would need an adapter to check ECM motors) If the power drops off to the motor when it turns off, then either the board is bad or there is some safety switch that is getting tripped. Like a condensate overflow switch for example.

[@sjcproductionsandmedia]

So how do I bypass my board for emergency cooling? My board is bad but blower motor is good.

[@WordofAdviceTV]

You just need to get power to the outdoor unit. The low voltage. You can try jumping R to Y on the thermostat strip on the control board or you can hook up the two thermostat wires coming from the air conditioner directly to the secondary side of the transformer. (24v side)

[@XMattingly]

If that capacitor is labeled "flux", you have a blower motor that won't run unless you get it up to 88mph

[@shazmiester1]

Jumped R and G on the control board. I hear 2 clicks approximately 2 seconds apart but the blower would not come on. The fan cage spins freely. Could it be the motor? Although the motor was replaced less than a year ago. Could it be the capacitor? Thanks,

[@steveadamo6693]

If need be, could you keep the blower hot wired through out the night to get through the night? I absolutely froze my butt off last night because I think my capacitor is bad.

[@WordofAdviceTV]

Yes you can hot wire it but if the capacitor is bad, even if the motor is hot wired it will not run. Hot wiring is only applicable if the board or fan relay is bad and does not send power to the fan motor.

[@daviddane9342]

Can you wire a 4 speed into a 2 speed blower motor?

[@ronnmiller9085]

My unit is a gas / electric outside unit, the blower motor quit, everything else seems to be ok. Problem, all video's show an indoor furnace and a fan with a capacitor. My blower fan doesn't have a capacitor and i'm sure that it doesn't matter to a pro, but i have found these type units on every help section video and not one package unit like mine that shows how to see if it's the fan motor, which i pulled out trying to locate the capacitor and it doesn't seem to have any looseness, wobble, dirty, rusty or otherwise. The unit is only 5 years old. But no one so far has shown this type unit being tested to see if it's the blower or the circuit board. Looks like i'll end uip calling an over priced hvac person to test it and tell me what's bad.

[@missylewis3326]

I have a strange happening. My air handler outside fan is working compressor is good, changed the capacitor for good measure; however only way the blower comes on is if I disconnect the “plug in” at first I’m thinking bad board. Got the new board today and same thing. Anyone have any ideas??

[@Kaibil66]

great video and explanation....than you

[@ralzam2386]

J. 👏🏼👏🏼😃👍🙏 thank you very much because you help me find the problem to my furnace and I just saved a few hundreds. Winter is around the corner and my kids are going to need heat soon. Thank you sir and keep up with the good videos. You just help a average Joe.

[@mysterybat35]

Hi. My blower works. It's just intermittent. Sometimes I have to reset the furnace switch once to get it to act right. Sometimes, like this morning I have to reset the furnace 4x. Would this video still apply? If not what would cause this? I can her the furnace turning on, but the second sound (the blower) is what doesn't always come on

[@percytsang8230]

First of all, thank you for your channel. I have learned a lot from your channel. Is the common you mentioned in the video is EAC terminal? you said using ECA terminal or CIR terminal connect with Cool terminal to check it by multimeter. if we get 120V it means motor is bad. if we don’t get 120V it means Control board is bad right?

[@prince2lof1]

Thank you! You helped me to fix my A/C fan problem. The inside fan would not come on at all and the A/C unit outside did not come on either. When I turn the control to fan only the fan or blower did not come on. After 4 hours of troubleshooting in a hot attic, I found the control board the problem. After looking closer I found a 5 amp fuse on the board blown. Replace it and guess what. Cold air is now blowing. Might want to add that in your next video. Could possibly save someone 4 hours in the hot sauna. Still could not have done it without your help. I saved at least. 2 bills. Thanks again!

[@WordofAdviceTV]

You're welcome! Thank you for coming back and sharing! I do talk about the 3 or 5 amp fuse in many of my other videos but I guess I didn't in this one. Sorry about that. Glad to hear you were able to get it fixed! Your efforts were not in vain :) Stay cool!

[@Michael-wy7om]

Can the blower and motherboard stop working at the same time? I just got a company that said both need replacement on my Trane 13 year old unit

[@WordofAdviceTV]

I mean it's possible but they don't usually both burn out at the same time.. Can't say for sure without seeing it, sorry.

[@edfletcher1716]

My blower motor isn't working when in heat mode. It works fine with cooling mode. I am getting 120 at the plug for the motor for both heat and cooling wires i.e red and black. I actually cut a extension cord and feed the motor to each separately just to test it. On the cooling wire motor ran fine on the heat wire just hummed. I'm thinking bad motor.

[@jaycarlton2010]

My Central A/C went out here in Michigan's Summer 2019 heat. After discovering that my blower motor was humming, I followed your instruction and found the problem to be the Control Board. Guess what....this is the furnace's 4th control board in 16 years. It gets shorted out because of moisture dripping from the frozen evaporator coils above. Finally figuring out the problem. Half of the home's unused rooms all have their ducts closed. Add that to a neglected filter in the middle of a heat spell and the system will freeze. Got the replacement board from Amazon today and will swap it out...hopefully for the last time ever! Thanks for you awesome tips.

[@WordofAdviceTV]

Glad to hear the videos helped you figure that out! Hopefully that is the last time! :) Thank you for commenting, stay cool!

[@surfyogi]

@@WordofAdviceTV I realized the motor bushings were out of oil, and it couldn't overcome the initial friction to start, as it was hard to turn and the motor was very hot if you did get it to run. Anyway I saved 175 bucks on a new motor by taking it apart and re-oiling the felt pads on the two bushings in the blower motor. It would not be hard for some people to do if you are mechanically inclined. Some motors may have oil ports, if they do I would use them.

[@readytosail1487]

very helpful but i still don't know what's wrong with my AC. I have 3 vents. 2 small ones are blowing air, while the big vent don't. Any idea what's going on?

[@paulylyus1]

this was exactly what I needed. very well explained. thank you.

[@xMarkuzx]

I installed a new Thermostat and my heat works perfectly but the AC and the Fan ON mode does not work!

[@WordofAdviceTV]

Do you have a little jumper wire between the R (or Rh) terminal and Rc terminal on the thermostat? That would be my first thought. Watch my basic thermostat wiring video if you are unsure of what I am talking about 👍

[@jamieweigold5234]

Should the outside condenser unit being running in both scenarios? I have no blower working and nothing happening at the condenser either when calling for cool. The blower wheel does spin freely and motor isn't hot so thinking its the board...or something else?

[@CharlesNolanArt]

It would appear to me that so many places just want the big money repair but how do I know the truth? By watching videos like yours and learning. Thank you!

[@emoshawn77]

80 volts at the black wire from the board. Jumped it and the fan came on. Pulled the board and the back was burnt up and crispy. Great video! Liked & Subscribed.

[@maxlemusa3520]

I have a 20 yes old Coleman furnace that is in good shape but not firing, is it worthy to replace motor and control board, or should I just replace it

[@samuelkoehler190]

So thanks for helping me figuring out that my fan wasn't bad nor my capacitor wasn't the issue. But in my opinion the cutting of wires was not a good idea. By passing the controll board or putting the line with the splitter into the cool will NOT give you A/C!

[@erlpen2016]

What if the blower motor is turning and and also getting very hot …is the fact that the motor is getting very hot a sure way of knowing that the motor is bad?

[@WordofAdviceTV]

The motor might be going bad or the capacitor is bad and that's what is causing it to overheat. If you have a multimeter, check the capacitor.

[@Eddie_Munster]

Wow great video. Just wanted to say thanks. Haven’t even tried it yet but you explained everything very clearly and thoroughly without adding too much. Saving this video for future reference as well

[@jamesrooney7689]

THANK YOU FOR THEE EASIET EXPLANATION YOUR THE BEST

[@jamesstanley5503]

Nice video. My blower motor isn't coming on.. I cant seem to figure out why my brand new install Goodman MVC96 furnace blower fan shuts off as soon as I switch the thermostat to cool mode but the a/c condenser does start up fine. Because of no blower fan circulation the TXV and service port start freezing up immediately so I cant even get to confirming sub cooling . I have the 2 condenser wires hooked to Y & C on the furnace control board but when i set the thermostat to cool it shut off the blower fan. Blower fan also wont run in the ON or Auto position when set to cool but does work fine in heat and fan only mode.??? Any suggestions would be great. thanks

[@bobs5287]

I signed in to KZbin just to like your video since you led me a bad board and now my family is cools again. Don't stop what your are doing!.

[@daledoe7711]

Should check voltage with blower leads connected bc you can have voltage drop off under load. Faulty wiring, connections, etc.

[@kingbran923]

I find myself in this situation. The air conditioning in my home usually works great. The AC unit outside has the fans spinning and everything but I noticed it would take longer and longer for the cool air to come on and circulate through the house until one day it didn’t come on anymore at all. Now I fear it may be the blower fan as I do hear a small hum when I turn on just the fan but nothing else. I tried turning power off and on again but no luck. I’m thinking the fan motor might have burned out but Im not sure I’m brave enough to mess with all of that voltage. I might have to call someone to take a look

[@MrJasonch]

My Goodman 075-3 overheats and blower motor is weak and needs manual assistance to start but then runs constant. I have “open limit switch” code ( main limit open, aux limit open). I replaced the main limit switch and the capacitor and still does exactly the same thing. Whats the auxiliary limit do? The schematic shows the same wires coming from the flame roll out sensors to the auxiliary. I followed it to the outside the blower cage and can’t reach it or I would check it for resistance. Should I disassemble or check something else first? Thanks.

[@PJL7095]

Why would you need to reinsert the splitter back into the board? Doesn’t it work fine as you intended by simply connecting the two wires.

[@dennisrandall8040]

I wish you were doing a general test as testing for resistance across the common and your different speeds. Checking the start and run windings, thing like that. You’ve basically explained how to trouble shoot your furnace and your furnace alone. A lot do t have a board. Just relays, transformers and so on. I wish mine was like yours. Make my life 1,000 times easier.

[@glasseye49]

Excellent! I replaced my condenser thinking the low "hum" on the unit was not giving the motor power. After replacing the condenser nothing changed still have a low sounding hum. Ideas?

[@1957defrost]

So thankful for your channel. We have an American Standard air conditioning unit electric with natural gas heat. We have had to replace the squirrel cage at least 5 times. The last one taken off was only on about 5-6 months old. The blades were all rusty and loose when taken out. Now the new one is making the same noise...every time its the squirrel cage. So frustrated with this unit!

[@losmoore3358]

My fan blower just went out after installing a new condensor fan motor. Thanks to your video u help me diagnose the problem. Yes motor is hot. Thank u.

[@losmoore3358]

On my fan blower there's a loud humming sound like it's trying to start. Motor is hot.

[@WordofAdviceTV]

That sounds like either a dead fan capacitor or a failed motor. Most of the time I end up replacing both.. kzbin.info/www/bejne/lWS3qZakeNCXZ5osi=yfnb2xgMUHtcpIT0

[@ronnienolan3681]

Hey brother, when my fuse is in my thermostat is on but the air doesn't come on and blower isn't blowing..but I take the fuse out the thermostat doesn't work but the blower comes on but ac unit doesn't kick in..can you PLEASE HELP ME???

[@000Virtual]

Furnace guy just kept the motor always running for me. Don't want to replace the circuit board

[@bens.9361]

Nice logical approach in your video. The problem with the furnace blower at my cottage is a bit different in that it works fine when I arrive, but after that it gives a blower fault. When I watch the restart sequence it *almost* gets there, but the fan doesn't get up to full speed and shuts off. After being left alone for another week, it again works perfectly the first time. Turning it off over night is insufficient. Could it be that the capacitor will only work when it has become fully discharged? How would you attack this problem?

[@last1st4nd1ng]

When I come upstairs where my furnace is . There is a smell of burning electrical. Like a burnt rubber smell. Any idea what this could be?