How to find a low voltage short HVAC Basics

[@AKIRAYADAO]

I am a new subscriber, coming from water and sewer operator of 20+ years, I have recently changed careers to a facility engineer and just got my EPA 608 universal certificate, watching your videos ,have inspired me to futher myself in the HVAC field. Thank you so much for the inspirational and educational videos.

[@TaddyDigest]

You're welcome brother Glad I could be here to help You are going to do great things

[@hvac1017]

man ill be honest 24v was my kryptonite before this video BUT you just made it simply and easy to isolate. much appreciated

[@richardvarnado1130]

I am a new subscriber, and I occasionally watch some videos out of curiosity. I’ve been in the business of AC in Refrigeration for 18 years and I watch different videos just to see what knowledge the person has and how he applies it the way they explain it. and you do an awesome job. you are and have been a blessing to a lot of people. Thanks for passing all your knowledge on. !!!

[@TaddyDigest]

Thank you, my friend. I'm so glad you like the video 📹 😊 . Please 🙏 stay around

[@jamesortolano3983]

" ill keep you COOL if you let me " love that closing line Tad.. Thankx for the content, much appreciation to you for the time you make for us fellow HVAC techs

[@joshrich5114]

I just started my HVAC journey as a technician and I grateful for the tips

[@texture6]

It’s nice to see the components laid out but in the real world when you open a unit, it’s a whole new world. I would like to see the transition of a simple layout to a real world on the field layout

[@JesseJayRock]

Hey buddy, my name is Jesse. I've been working in AC now for almost five years. Started as an Res. Installer from the school of hard knocks, made my way to lead and quickly became the A Team. Now I am a Area Manager for a New build Company and am trying to learn more tech work to be able to service friends and family and eventually my whole City! Thank you for your videos, I can't help but share them with all of my AC buddies. God Bless and keep em coming!

[@TaddyDigest]

Hey Jessie thank you so much For sharing my videos that helps me tremendously I want to send you all of my guides Here is My email [e-mail]

[@busyinyahawahwayahawashi5369]

Lucky you am nearly starting out they gave me 1 month to train & now they have me doing services calls & messed up or took to long on a call now they wanna fire me smh

[@sergiodantas6603]

Sergio from california new guy in the business thank you for all your impute and a-lots of knowledge you are a Genius cheers.

[@cattoc]

Charlotte, NC Thank you for the well made video! I am chasing a power issue on a air handler after a lightning strike. I have good power to the transformer but then nothing. I am also getting nothing from the thermostat wires

[@Lon-sp3zy]

I really enjoyed your classes.

[@TaddyDigest]

Thank you my brother

[@AZ_sunshine]

thank you! It amazes me to see how hard professionals work to help other. God bless you. You are a good instructor and impressive how you set up models to really show how things work. I susscribed and look forward to your other videos. Again Thanks. You are a hero.

[@TaddyDigest]

You're welcome thank you so much for your kindness

[@duprewinston4346]

Thanks brother we are up an running again. Just in time cause it's 67 degrees in the Bay Area. And we were getting worried about frost bite...lol

[@1337emtff]

Thanks ,from Bedford VA

[@maurilioarredondo3403]

I'm a new subscriber from the jem of the desert Coachella California ,thank you for all videos

[@hugogarcia7574]

Thanks for teaching in Taddy. Houston texas

[@llroman7823]

Excellent video. Thank you for explaining so clearly.

[@TaddyDigest]

Your Welcome 🙏 🤗

[@lahoucinelamlih3214]

Got yourself a new subscriber, keep'em coming buddy

[@bob-flowers6626]

Thanks for the low voltage video tips!

[@TaddyDigest]

You're welcome

[@justinmo9198]

Justin Mo - HHI, SC Really appreciate your videos. 1- very intellectual and helpful 2- refreshing to know you agree with a LOT of how I operate. Thanks brother

[@TaddyDigest]

I appreciate that Thanks Justin 😊 🙏 ☺️

[@carlosdixon9530]

New subscriber you are very informative and creative in your approach it helps me a lot with me being a young tech you have given me skills now I build on and a great tech thank you boss I’m from Durham Nc

[@TaddyDigest]

Awesome, thank you!

[@santiagovillarreal6647]

Good video.

[@gonzalomartinez2866]

Miami here. Thank you

[@TaddyDigest]

You're welcome

[@noahbaggett9037]

Forgot about the rvalve solenoid . Just had a trane one shorted and I used a magnet to shift it into cool . Until I get the correct solenoid

[@carvajal01]

Thanks from Chicago illinois

[@mikemike7397]

Sub for sure bud! Saw 3 of your vids and you saved my behind on all of them

[@chilln01]

Tad is the MAN!!!!

[@TaddyDigest]

Thank you my brother

[@edwinayala6145]

Edwin, Denver thank you excellent video!

[@USA-GreedyMenOfNoIntegrity]

Lots of insulation worn through on vibrating Goodman units. Most manufacturers do not tie wrap the wiring properly. When installing new systems, I pull the top and go down inside to foam tape and secure the wiring. Otherwise you'll be called back out in 3-10 years.

[@TaddyDigest]

Going to extra mile I love it

[@stansummers6259]

Great video from Cadiz Kentucky

[@TaddyDigest]

Thank you

[@stansummers6259]

U do have very very good videos and very well explained thank u for all that sir

[@user-tj2ws6hf7v]

Great video but we need more new one on Fan centers and their transformers I know that their old but there's no good KZbin videos that explain how to wire up

[@TaddyDigest]

What is a fan center

[@user-tj2ws6hf7v]

It's what they use on the old furnaces instead of the mother board

[@user-tj2ws6hf7v]

Thanks for the response

[@stansummers6259]

Great video from Cadiz ky

[@DrSolo-qb1ze]

Thanks!

[@TaddyDigest]

You're welcome.Thank you so much for watching

[@TaddyDigest]

thank you so much

[@joprilsubano0405]

Thank you so much boss,for all you awesome videos,I always watching from Philippines ❤️❤️❤️

[@TaddyDigest]

My pleasure!

[@unabridgeddick6645]

Thanks for the tips bud

[@staceysmith225]

Thanks 👍🏽

[@TaddyDigest]

Any time!

[@kingtony1818]

You a great technician.!!

[@TaddyDigest]

Thanks king Tony

[@bojack2740]

Subbed. Thanks for your time man

[@TaddyDigest]

Absolutely you're welcome

[@chrisbrower6857]

Awesome video Brother! Thank you

[@TaddyDigest]

You're welcome 😊 Thank you for watching my friend

[@sacapuntasfregerio4274]

0:30 🔔

[@jacobsisk2188]

The inline fuse is on the hot not the common….

[@tenguestay]

Thank you H town

[@TaddyDigest]

Your Welcome Glad you watched 👀 😊

[@1madrs637]

Have been trying to chase low voltage short. New contactor, new board, now the 5A blows when both thermostats are on off, was just blowing every few days, eventually just started blowing immediately with every new fuse, this is also with outside handle fuse unplugged.

[@soloch69]

Great video like always my friend 👍🏻

[@TaddyDigest]

Thank you very much my friend

[@user-vx5kf9xi2u]

That is helpful, how do you find a short when a 3 amp fuse blows after furnace has been running for approximately 4 hours, heat or ac mode

[@TaddyDigest]

Check out my other videos on low voltage shorts and it should give you the knowledge you need

[@brianszuch6774]

Finally a guy that really knows his poop.. Nice video

[@TaddyDigest]

Thank you for watching

[@explorador13-ul6os]

i am a new subscriber..love your videos

[@TaddyDigest]

thank you so much 😊

[@MrCodyniswonger]

Need help old house went through 6 transformers i have an inline 3 amp fuse but its not tripping. Instead transformer continues to blow. Would love to get some advice anything would help. This is for my mother ❤❤. Happy Thanksgiving any and all who help you are very very appreciated

[@cashonlyj3469]

Ol' Taddy howdy from Paris

[@TaddyDigest]

My brother j thought about you today Hope to see you soon

[@cashonlyj3469]

@@TaddyDigest Amen sounds good

[@elizabethprusak]

Mark from Indy, thanks Taddy very helpful, most common short for a bryant AC unit ? I have not yet started the process of elimination, but going to start...also can you recommend a good meter? thanks very much

[@TaddyDigest]

You're welcome thank you for watching I use a field piece But there are a lot of really good meters out there

[@soloch69]

Great video thank you keep them coming

[@TaddyDigest]

Thank you so much Let me know if you have any ideas of content I could do to help other techs please Thanks for supporting Stay Healthy my friend

[@JR-ch8rt]

Thank you 😊

[@TaddyDigest]

You're welcome J R Thank you for watching

[@twob4plank]

I definitely will try this,because my fuse keeps blowing.Thanks

[@TaddyDigest]

You can do it!

[@TonyRodriguez-ok2ix]

isolate the condenser to see what happens.

[@TaddyDigest]

boom Shaka laka

[@jeancadet7175]

That’s fine I like it

[@hvacrzone5390]

Awesome Advice!! 👍🏽👍🏽

[@TaddyDigest]

Thank You

[@Yaxchilan]

hi im from WA, you're the first man ive found realy attractive in like 5 years.. i am old and 38 but tell me more...

[@shawnlarrowe5870]

Just joined. Great info!

[@TaddyDigest]

Awesome! Thank you!

[@robertspadezhinton]

Can you check the voltage to see if contactor is bad or just in Ohms..?

[@TaddyDigest]

You can also do test by checking voltage

[@johnvirgilbasto362]

Thanks Ted, Awesome. Can u make a video for Troubleshooting a package unit...

[@TaddyDigest]

yes John I can help 😀 Heat pump or gas heat?

[@johnvirgilbasto362]

@@TaddyDigest I'm from guam, It's a tropical weather so cooling only no heating... But anyway, Love ur videos man. .. very helpful.. more in troubleshoot plss

[@TaddyDigest]

ok deal thank you

[@carvajal01]

I'm fixing a old carrier package and find that gold , how you call the little breaker 3.2......the machine does not make any noise, but start to see not 24 volt, termostato doesn't work......when I saw that part, I said something is wrong with this.........

[@jeromefriolet9076]

When you say the contactor coil resistance is way off, im guessing your saying the coil internally got damaged and might be reading Kohms or Mohms? Or short to ground?

[@TaddyDigest]

typical contactor ohms for a 24 volt coil are around 10-15 and when damaged will read like 3 😁

[@zzyzxRDFwy15]

Hi I'm Joe and I shorted out and destroyed my HVAC 120/24v transformer twice because I'm a do it yourselfer who doesn't fully understand what I'm doing. I hope I've learned to use a fuse on the secondary wire from now on.

[@timjohn8963]

Am from Randallstown MD need help with ac unit keep blowing 5 amps fuse on control board when I turn the power on

[@MrMultitool]

Good video Tad. I like and use Fieldpiece meters too but I wish they would offer a set of leads that had straight end alligator clips. How hard could it be! Do they not see how inconvenient these are.

[@TaddyDigest]

Thanks TP services Your right. They definitely should and could easily if they wanted to. Good Idea.

[@WORDTOMICHAEL]

I would like to join your club

[@carlossaenz4075]

Great , texas,

[@DrSolo-qb1ze]

Hello Tad. I was working in the field and ran across a thermostat that the voltage on the R and Y was 16 volts, it also showed 16 volts in the air handler and 16 volts in the condenser. Testing the Red with green, and white register 27 volts. What could be causing the voltage drop? The contactor does not show voltage on the coils, but when testing the coil for ohm it shows 12.8 ohm and it also has continuity. What could be the problem? Thanks for your input.

[@TaddyDigest]

Could be a loose connection could be a bad thermostat could be a couple problems for sure

[@DrSolo-qb1ze]

@@TaddyDigest Thank you!

[@bradyates7046]

how do test for a short in a ventaion control

[@gotchaplumber]

Is it better to put fuse on common or red or does it matter?

[@TaddyDigest]

Better to put it on red

[@albertescober2728]

What if the unit runs for 3 days then it burns the transformer (low voltage side) and not the fuse

[@TaddyDigest]

then it could be a wire touching only at certain times

[@biblebloopers946]

I'm confused. Why do you have the low voltage fuse wired in on the 24 v common side and not the 24 volt hot side? I usually see this fuse on the hot side

[@TaddyDigest]

your right that is typical wiring I was just throwing an example together.

[@TaddyDigest]

trying to help someone develop an understanding of where to start and what the process looks like

[@Honeyman76]

Out of curiosity, if my AHU has no fuse (3 amp or 5amp) can I wire in a fuse between my transformer and my furnace board? If so, I have been thinking that if I am going to do this, should one side of the fuse be on the 24v hot from transformer and the other side my common from transformer? then from there to my board so that I have power in and out of that fuse? I couldn't find a video on how to do this. I have come across furnace boards/ahus without a fuse. cheers

[@TaddyDigest]

yes absolutely

[@Honeyman76]

@@TaddyDigest fantastic. Next board I will be doing this! Thank you for the fast response. I only have 3 years in residential HVAC, so I am learning still...and probably will be forever.

[@brentp1007]

Hey my friend, been watching your videos Also been in the field for about often on for 26 years. I’m stumped on this Bryant 95% furnace fan turns on for 90 seconds inducer kicks on for about two seconds and then pops. My three amp fuse. I have checked everything. I have exhausted my knowledge can you help me diagnose this please?

[@TaddyDigest]

Check the limit switch on plug it and bypass it and then see if that stops the fuse from popping.

[@vernardking8067]

Hey tad my question my air conditioning unit stop working my control board stop lighting up I check the door switch and it had 110 volts check my hot and common on transformer it had no power this a new board but it generic the circuit board light came on for a moment but it went out.any suggestions

[@gotchaplumber]

Most fuses are on red side. Does it work the same on blue(common)?

[@TaddyDigest]

yes that's where it's usually at

[@bellamaesuniverse6462]

What part of the system will i find the ressetable fuse?

[@bojack2740]

A bit confused when you said the fuse is protecting the transformer. I thought it's supposed to protect the control board.

[@AlexanderGonzalez-un9ox]

@@bojack2740 it protects both. The board is wired in the 24v circuit and the fuse is in the board.

[@roqueherrera2692]

Need help diagnosing ignition modules on furnaces

[@TaddyDigest]

OK I will do a video of this soon

[@linnell6103]

Can you make a video on high voltage shorts?

[@stansummers6259]

My condenser fan and compressor won’t start up I have 240 volts to outside unit and 29 ohms to coil so any ideas

[@armandolopez5826]

👍

[@JP-ku3he]

With the resetable fuse do you just add a female and male connecters with wires straight to the fuse?

[@JP-ku3he]

Also is the button hard to press when it's not popped?

[@TaddyDigest]

very easy to press

[@JP-ku3he]

@TaddyDigest Yeah mine feels stiff like you can't even press it so even when it's not reset it's easy to press?

[@JP-ku3he]

Actually it's stiff when not popped and it just popped when I turned AC mode on but when furnace is on it never pops

[@JP-ku3he]

No info ? Just a heart?

[@Inverselattice0]

How do you test if there is no fuse wired in anywhere

[@hustleletters8159]

What is the size of the resettable fuse or brand

[@TaddyDigest]

3 amp

[@WORDTOMICHAEL]

Michael from nc

[@galigalindo6839]

I check most of my new contactor has 15 or 16 ohms. Is that ok ?

[@TaddyDigest]

Yes that is fine

[@Cleansing_Fire]

Equinox festival.. 🔥 ✌️ ☮️ 🕊 😂

[@TonyRodriguez-ok2ix]

contactor coil short.

[@sonnguyen-ve7gn]

Hey Taddy, I need your help to HVAC trouble shooting during working on the field. how much do you charge like a month or a year

[@TaddyDigest]

Hey I can definitely help you Check out my membership levels Join this channel to get access to perks: kzbin.info/door/uMyjTVlkM4xZ5z_eSyoB1wjoin

[@stansummers6259]

Do u have any videos on fan coil units

[@TaddyDigest]

I do not But I'm working on it

[@linnell6103]

I joined

[@TaddyDigest]

Awesome thanks for subscribing If you want to join click the join button Join this channel to get access to perks: kzbin.info/door/uMyjTVlkM4xZ5z_eSyoB1wjoin Wanna Learn more about hvac? Check out my hvac tips for technicians playist. kzbin.info/aero/PLVjetZt5xgenmO76adHwb2ctyeBIFKUus

[@Empty7775]

I currently have a low voltage intermittant short. Replaced the fuse and the heat pump will run in ac mode for about 24 hours before blowing the fuse again. Resistance on the heat pump contactor is about 17 ohms, I didn’t find any wires chafing outside. I’m wondering if the thermostat has an intermittent issue causing the fuse to pop?

[@TaddyDigest]

The thermostat can be the issue however I would take the thermostat off the wall and test the heating and cooling operation Without the thermostat and see if it pops

[@Empty7775]

@@TaddyDigest ok. Ill try that tomorrow, ill be there at 10am est. thanks for the reply dude.

[@TaddyDigest]

You're welcome brother good luck

[@Empty7775]

@@TaddyDigest found it.. in the AH, low voltage wiring is in a small metal box the size of a playing card with 2 screw’s holding the cover on. Checked every wire run, ohmed every coil, unplugged the rev valve ect, everything checked good. Had my popper in, then removed and put in a new fuse. The ah was running while putting on the cover to the control wiring, installed the bottom screw of the cover, then while installing the top screw, the fuse blew. The the stat wire was routed behind the box, as i installed that top screw, the threads of the screw were penetrating cutting the insulation of the stat wires (still in the brown insulation). Accidental find but ill take it.

[@TaddyDigest]

Awesome news brother glad you found the issue and you fixed it good deal

[@gilbertosalas2463]

Hey how are you ? I have a question and I want to know if you can help me? I have a short in the low voltage my fuse burns but even with the thermostat it is disconnected and it seems that it is the board one of the common lines has continuity with the red and I disconnected the common that goes to the board and I no longer had a short? How can I know if the board that is damaged

[@TaddyDigest]

Check out this video as well Troubleshooting Low Voltage Short HVAC Basics kzbin.info/www/bejne/r6OcaXqji9mEbas

[@TaddyDigest]

take the board out see if it looks burnt see I it smells burnt

[@MTknives]

Give it the beans and you will find that short. 😉 just throw in a 102 fuse and give er the juice. 😎

[@TaddyDigest]

hahaha lol 😆 Yes that is one way 😆 🤣

[@jmeepping1396]

I'm not blowing my fuse or breaker and my home is only 3 years old and I have not thermostat power.

[@opeyemialaka623]

I join

[@opeyemialaka623]

Really good explanation Process of elimination

[@TaddyDigest]

Join this channel to get access to perks: kzbin.info/door/uMyjTVlkM4xZ5z_eSyoB1wjoin Wanna Learn more about hvac? Check out my hvac tips for technicians playist. kzbin.info/aero/PLVjetZt5xgenmO76adHwb2ctyeBIFKUus

[@JustPlumDucky]

Where do I find that link for the resettable breaker?

[@TaddyDigest]

Here is a link for a settable Supco POP3 3 Amp Circuit Breaker, Push Button amzn.to/3BdtxyY

[@JustPlumDucky]

@@TaddyDigest Thx much for your reply! Because the Lil' Popper resettable breaker is about $20.00, I'm looking at one like you're showing in this video. It's 3A with the rocker switch (less than $10.00/free shipping/Prime. Does it need to have a low voltage rating, or are the ratings such as 125v/250v (whatever the exact numbers are) maximum ratings which is OK?

[@TaddyDigest]

If you find one send me the link because I want a cheaper 1 to recommend Whatever it says is whatever it is my friend

[@charlesmalinoski6325]

Are you talking about the (NTE Electronics )R59-3A ? I have one.Love it. $7.20 No Problems... @@JustPlumDucky

[@ranakeen9884]

BUT WHERE EXACTLY is the fuse located???? Is it in the attic, outside where the compressor and fan is or is it hidden somewhere behind the thermostat!?????

[@SH-vg5ov]

It was hard to watch with so many interrupting ads (~6 to 7)

[@TaddyDigest]

dang ads

[@ericenyart]

Why are you not shaving the homeless guy beard?