Very nice video and help full for new learner students, it's not big mistake common person can find out what is the fault into the electricity hvac technician need understand interlock wiring, electronic devices microprocessor plc and DC 12 volts sefty components, ducked ac unit is very common can easily find out the problem
Thus video has nothing to do with inverter systems at all. That would be a different class all by itself. Almost all inverter boards has an onboard diagnostic and whatever fault code you get is on the manufacture label behind the panel. Like Lennox unit. Other units you have to count the slow and fast flashes which therefor gives you a fault number to reference label.
Man I'm about 5 years into the field now and holy cow these instructors have some patience ! Love the hands on training and how these kids are getting involved! There is still hope for this field!
Hvac is something different. Im a jman electrician, been doing it for 7 years and understand schematics and electricity. Just started with an hvac company 3 months ago to help installs and do other normal electrical work. They sent me out on a service call to help a service tech and we both couldnt figure out why the ac wouldnt work. Had a senior tech come out another day to find out it was a shorted coil on the ac contactor. Who would have known, it made sense after he figured it out 😂 but damn. Definitely need to be smart to do this and you really do need to understand fundamentals to be successful.
HVAC SCHOOL is my top channel to go to for learning. Bryan's teaching style and the way he explains things is easy to understand he doesn't try to make it hander then it really is i like that. Every video he posts gives me confidence.
I dig the hands on training, I enjoy finding shorts and I do know that a lot of techs don’t quite understand the low voltage circuit, or easy ways to check for open circuits or shorts. Good job!
I feel like im watching a good movie the way it switches between groups diagnosing the problem. I always forget all about the other group and then its like bamm 😂
Ha, his mic has an open @ the end..😉 Awesome instructor you are Bryan. I am forwarding these to my trainee . Keep up your great efforts and you will turn green techs into mean techs. Never stop learning people. 👍🏼👍🏼.
I went to an hands on HVAC school. Taken them apart and put back together over n over again. But also had power point lessons as well. I was always taught to look at what color wire is connect to your R,C,G,W,Y etc. inside the AHU and behind the t-stat because your green wire may not always hooked up to G terminal. Take a picture of the wires behind thermostat so you don’t forget when your at the AHU. But overall great informative information. Now for things for the instructors you must lead by example and if your telling students to wear safety glasses. You as an instructor should also be wearing safety glasses as well.
Idk how Brian keeps his cool with this group of students. Half look like they just hit a blunt and don't even know where they are. I would give my left nut to work for a company to invest this much in me and teach me.
Being retired Telecom Dept from a Famous Railroad, I might add in the Fall Rats start looking for nesting material, and they go to cables, resulting in shorted or open wires in the Fall!
I feel comfortable with all of this, but watching this gave me anxiety. I'm terrible in a group setting when learning. With that said, I really wish I had this kind of instruction in school. Great job.
Good low voltage tutorial i have a lot of getting a new trouble shooting about 24 voltage open wire and how to do this to resolve the problem. Thanks you sir. God bless you sir
Awesome job. Start at the braindead basics. Knowing this when troubleshooting and you get twisted you come back to basics and start again and verify what is and what is not. Well done instructor. There is real skill in problem solving. Think it through don't be one of the brain dead part swappers. Part swapping only as a last resort to confirm our theory.
Enjoyed the video. However, I believe it would be more informative and easier to follow the troubleshooting by the techs to run through each of the scenarios from start to finish before moving on. The presentation made it more difficult to follow what is going on. ( I am a big fan of your videos)
Thank you for having these video. 3 and half weeks from graduation and being certified. This is very helpful for upcoming finals. 😊 ty ty ty. Any tips for the interview I'll go for after I finish school.
Great troubleshooting video. Would also add IR megger test for a wire rub out or short the between all conductors to earth. 250-500VDC Plus keep halving the circuit to isolate it. - The Megger is used to measure insulation resistance and other high resistance values, It is also used for ground continuity and short circuit testing of electrical power system. The chief advantage of the megger over an ohmmeter is its capacity to measure resistance with a high potential or breakdown voltage.
A warning to heed when using a hipot insulation integrity tester on low voltage hvac wiring is to isolate the conductors from the circuit to avoid damage to a defrost board, for instance. Also, some coils cannot withstand a hipot test voltage higher than its insulation rating.
What I did is go outside and take the cover off the contactor at the condenser. I would check for 24 volts across the contactor if it was not running. If it showed voltage and not pulled in replace the contactor. Then if pulled in and not running check for voltage across the contacts. If no voltage then check the breaker and the fuses. If no 24 v on the contactor then check the thermostat. If thermostat is set to be calling the check red to blue for 24 volts. If no 24 volts check the tx fuse...if good then check the tx and if no 24 volts at rx replace it. This always worked for me.
Ooo . Love diagnosing lab faults.. kill power, ohm out contactor coil, then each R, G, BL, YL, WHT to common. Contactor coil should read 12 to 17 ohms ..any lower can draw more current than is supplied resulting in an open fuse. Tech may find a rub thru cable on ductwork or too many loads on the low volt supply..ie zoning control, 4way reversing valve coil, liquid solenoid, even a faulty tstat circuit itself, or faulty sequencer delay heater if used.
I really like the info in this video but I think if you edited it to show one in its entirety and then the other it would be more helpful to us new guys. It gets a little confusing when you talk about doing something and then it switches to another system where they’re doing something else. I needed the info from the unit Brian was working on and it’s harder to digest the info because you guys talk about what to do then switch to the other unit so I had to watch it several times
Man I feel for the guy that got stabbed in the back. I remember getting stabbed by plywood nails in the attic a many of times LOL those were great tests for your techs.
I personally hate sticking meter leads in marettes for 2 reasons . One its inconsistent and two it gives you a chance to check someone elses ability to properly connect wires and you can ensure you have proper contact with the meter leads
Can someone please explain how exactly theyre finding which wire is which here. I couldnt see exactly what the main instructor is doing with the wires 12:36
36:30 - The type of fuse used here has test terminals in the top on either side of the rating label giving you the ability to test its integrity while in the circuit with power on: if you measure nominal voltage (24vac), then the fuse is blown; if 0vac, the fuse is intact.
I have questions about ,and You may not answer our question but Yorkshire copper fittings with solder ring already built in for plumbing ready for market in UK, but ,we are looking for in USA for AC line .can we use it ? Is there any in the market for HVAC. Line ? Because It is to use and perfect all the time when copper to copper soldering
I do the "ring around the rose" method. BECAUSE... you can do it very lightly, only scoring the outer casing. At that point, you've thinned it enough to just pull and it will rip off. Too many kids with monkey muscles just tearing it open. I've seen minisplits getting grounded out by the romex connector because someone scored the com wire with a razor too hard. You can do it, just be graceful with it
Try using a bic lighter next time. Run it back and forth under sheathing for about three seconds where you want it to break. Then, it pulls right off. Conductors unharmed.
Can someone please explain to me 12:40-14:00 in a different way or what exactly he meant I been wanting to understand this cause of the problem with the same colored wires
Bryan stick with your technique from start to finnish your super tech is hijacking the presentation and new guys need one instructors A B C also its always good to remove wire nuts see if they prepared connections properly , his comment about tie points at unusual locations not needed here either good class.
Also, the reason that the one guy mentioned all the low voltage being pulled outside at a super market is because it was a light commercial/commercial unit where the transformer is outside
If the guy would have started at the main breaker, where he was supposed to start he would've found the problem in 2 minutes instead of 2 hrs...YOU'RE FIRED!🤧 he's now a cap bandit😂😂😂
If you have refrigeration skills, than get a job at a seaport. Thats where reefers are maintained until they are either loaded onto a ship or a truck. Carrier has a one week course, Its in Long Beach, Ca. Get your foot in door first. A good reefer mechanic is a combination of electrician, electronics tech, and refrigeration tech.
I have a nest thermostat intermittent issue where its losing power e73 error code every two weeks or so. Ive connected a common and confirmed 24v at baseplate. Ive replaced the thermostat itself and baseplate, checked all low voltage wiring to ground and between each other with no continuity. Ive also replaced the contactor. All wiring connections seem secure. I got a call back and replaced the board now and transformer. If this doesnt solve it what else can it be im at a loss. Only other thing i can think of is somehow its losing power at the outlet but homeowner is saying when it happens other electrical items are working.
First, I would switch the hot (red) and the common (c) with two other conductors like the fan and the heat wires. In other words, you probably have white to w and green to g, just switch those. If it continues after that then look to the door switch, or a loose connection. If no loose connection then you might have to replace the wire. Hope this helps.
digital non programable thermostats are less problematic then the programable hands down,,,i remember having calls because the ther was not programed correctly ,,,,and they are all a little different ,,,you need the paper work for it ,,,,,i just hate them ..just saying ok back to the class ,,,,,,fun fun fun
![Megan Thee Stallion - Neva Play (feat. RM) [Official Video]](http://i.ytimg.com/vi/TpYTyAaTRts/mqdefault.jpg)
Very nice video and help full for new learner students, it's not big mistake common person can find out what is the fault into the electricity hvac technician need understand interlock wiring, electronic devices microprocessor plc and DC 12 volts sefty components, ducked ac unit is very common can easily find out the problem
Thus video has nothing to do with inverter systems at all. That would be a different class all by itself. Almost all inverter boards has an onboard diagnostic and whatever fault code you get is on the manufacture label behind the panel. Like Lennox unit. Other units you have to count the slow and fast flashes which therefor gives you a fault number to reference label.
Starting my hvac career soon. I'm so excited that I'm up at 12am watching this!
Man I'm about 5 years into the field now and holy cow these instructors have some patience ! Love the hands on training and how these kids are getting involved! There is still hope for this field!
I’m going on two years but not consistent I admit. I’m looking to gain more experience and knowledge and these videos are helpful
My farts smell like rotten cheese
Hvac is something different. Im a jman electrician, been doing it for 7 years and understand schematics and electricity. Just started with an hvac company 3 months ago to help installs and do other normal electrical work. They sent me out on a service call to help a service tech and we both couldnt figure out why the ac wouldnt work. Had a senior tech come out another day to find out it was a shorted coil on the ac contactor. Who would have known, it made sense after he figured it out 😂 but damn. Definitely need to be smart to do this and you really do need to understand fundamentals to be successful.
HVAC SCHOOL is my top channel to go to for learning. Bryan's teaching style and the way he explains things is easy to understand he doesn't try to make it hander then it really is i like that. Every video he posts gives me confidence.
Now just try troubleshooting these furnaces when it’s 150
Degrees in the attic lol
The training is rewarding I love every part of it. The install Crew becomes acquainted and it just brings good vibes.
I dig the hands on training, I enjoy finding shorts and I do know that a lot of techs don’t quite understand the low voltage circuit, or easy ways to check for open circuits or shorts. Good job!
I like when students really get involved,this is the best method of learning and the quiz at the end of the class
You’re the best hvac teacher I’ve ever heard! Brilliant and you make it simple
When I makes some bucks benefiting off of y'all's lessons and wisdom.... I'll give back. Thanks y'all! .
Thanks 🙏
And
Much respect!
👊!
I feel like im watching a good movie the way it switches between groups diagnosing the problem. I always forget all about the other group and then its like bamm 😂
Ha, his mic has an open @ the end..😉
Awesome instructor you are Bryan. I am forwarding these to my trainee . Keep up your great efforts and you will turn green techs into mean techs.
Never stop learning people. 👍🏼👍🏼.
I went to an hands on HVAC school. Taken them apart and put back together over n over again. But also had power point lessons as well. I was always taught to look at what color wire is connect to your R,C,G,W,Y etc. inside the AHU and behind the t-stat because your green wire may not always hooked up to G terminal. Take a picture of the wires behind thermostat so you don’t forget when your at the AHU. But overall great informative information. Now for things for the instructors you must lead by example and if your telling students to wear safety glasses. You as an instructor should also be wearing safety glasses as well.
Great demo for trouble shooting for new folks and a refresher for higher level tech. Thanks for a great show and tell real problem examples.
Idk how Brian keeps his cool with this group of students. Half look like they just hit a blunt and don't even know where they are. I would give my left nut to work for a company to invest this much in me and teach me.
I sincerely appreciate the genuine aspect of your teaching
As an apprentice I would kill for this training
such helpful videos. what a service you guys r giving
Being retired Telecom Dept from a Famous Railroad, I might add in the Fall Rats start looking for nesting material, and they go to cables, resulting in shorted or open wires in the Fall!
Mice chew through wires because the insulation is made from peanut oil. I was very surprised when I learned this.
I feel comfortable with all of this, but watching this gave me anxiety. I'm terrible in a group setting when learning. With that said, I really wish I had this kind of instruction in school. Great job.
Great lesson, I just had a low voltage problem today. Good stuff wish I was there learning more with yal.
Thank you so much...I'm new with HVAC-R and really learning a lot from your videos
Good low voltage tutorial i have a lot of getting a new trouble shooting about 24 voltage open wire and how to do this to resolve the problem. Thanks you sir. God bless you sir
Love the lesson
The teachers attitude is aas though
Man great job. Love the question about common. This is troubleshooting.
Awesome job. Start at the braindead basics. Knowing this when troubleshooting and you get twisted you come back to basics and start again and verify what is and what is not. Well done instructor. There is real skill in problem solving. Think it through don't be one of the brain dead part swappers. Part swapping only as a last resort to confirm our theory.
Thank you very much for showing us these videos so bally, God bless you !!
Good teachers whith a los oficiales patience god bless you guys
check in from Tampa Florida Thanks
this is my American dream 👍👍👍👍
fun suggestion , buy yourself a seem ripper ( for sewing) it works amazingly for pulling the shroud back
Yes Sir! Seam ripper is my go to as well!
Enjoyed the video. However, I believe it would be more informative and easier to follow the troubleshooting by the techs to run through each of the scenarios from start to finish before moving on. The presentation made it more difficult to follow what is going on. ( I am a big fan of your videos)
Thank you for another great video
Thank you for having these video. 3 and half weeks from graduation and being certified. This is very helpful for upcoming finals. 😊 ty ty ty. Any tips for the interview I'll go for after I finish school.
Great teaching methods.
I would love to work for this company! Del-air did me dirty! Most of the techs are getting OJT and don't know barely any thing!
great video, please do more combining sequence of operation, thanks
Great troubleshooting video. Would also add IR megger test for a wire rub out or short the between all conductors to earth. 250-500VDC Plus keep halving the circuit to isolate it. - The Megger is used to measure insulation resistance and other high resistance values, It is also used for ground continuity and short circuit testing of electrical power system. The chief advantage of the megger over an ohmmeter is its capacity to measure resistance with a high potential or breakdown voltage.
A warning to heed when using a hipot insulation integrity tester on low voltage hvac wiring is to isolate the conductors from the circuit to avoid damage to a defrost board, for instance. Also, some coils cannot withstand a hipot test voltage higher than its insulation rating.
Thanks for the video.
What I did is go outside and take the cover off the contactor at the condenser. I would check for 24 volts across the contactor if it was not running. If it showed voltage and not pulled in replace the contactor. Then if pulled in and not running check for voltage across the contacts. If no voltage then check the breaker and the fuses. If no 24 v on the contactor then check the thermostat. If thermostat is set to be calling the check red to blue for 24 volts. If no 24 volts check the tx fuse...if good then check the tx and if no 24 volts at rx replace it. This always worked for me.
Nailed it
Ooo . Love diagnosing lab faults.. kill power, ohm out contactor coil, then each R, G, BL, YL, WHT to common. Contactor coil should read 12 to 17 ohms ..any lower can draw more current than is supplied resulting in an open fuse.
Tech may find a rub thru cable on ductwork or too many loads on the low volt supply..ie zoning control, 4way reversing valve coil, liquid solenoid, even a faulty tstat circuit itself, or faulty sequencer delay heater if used.
Very good instructor
I really like the info in this video but I think if you edited it to show one in its entirety and then the other it would be more helpful to us new guys. It gets a little confusing when you talk about doing something and then it switches to another system where they’re doing something else. I needed the info from the unit Brian was working on and it’s harder to digest the info because you guys talk about what to do then switch to the other unit so I had to watch it several times
Thanks for the content. You are appreciated.
Great class thank you for sharing it!
Man I feel for the guy that got stabbed in the back. I remember getting stabbed by plywood nails in the attic a many of times LOL
those were great tests for your techs.
I personally hate sticking meter leads in marettes for 2 reasons . One its inconsistent and two it gives you a chance to check someone elses ability to properly connect wires and you can ensure you have proper contact with the meter leads
You can spot the installer with all the mastic on his pants 🤣
Nice job and video
At 23:30 buddy's safety glasses roll back......
Can someone please explain how exactly theyre finding which wire is which here. I couldnt see exactly what the main instructor is doing with the wires 12:36
36:30 - The type of fuse used here has test terminals in the top on either side of the rating label giving you the ability to test its integrity while in the circuit with power on: if you measure nominal voltage (24vac), then the fuse is blown; if 0vac, the fuse is intact.
I have questions about ,and You may not answer our question but Yorkshire copper fittings with solder ring already built in for plumbing ready for market in UK, but ,we are looking for in USA for AC line .can we use it ? Is there any in the market for HVAC. Line ?
Because It is to use and perfect all the time when copper to copper soldering
Ideal stripmaster automatic stripper. $25 TO $30 KLEIN MAKES ONE TOO
YOU ARE THE BEST
Thank you
18:00 "cuz you have never made that mistake before" lmaooo
Is continuity and ohms the same? I thought the beeping sound was continuity
Thanks
Crocs n socks !? I’da Been sent home off rip
Great class!
I do the "ring around the rose" method. BECAUSE... you can do it very lightly, only scoring the outer casing. At that point, you've thinned it enough to just pull and it will rip off. Too many kids with monkey muscles just tearing it open. I've seen minisplits getting grounded out by the romex connector because someone scored the com wire with a razor too hard. You can do it, just be graceful with it
Try using a bic lighter next time. Run it back and forth under sheathing for about three seconds where you want it to break. Then, it pulls right off. Conductors unharmed.
it's like herding cats 😂
I will usually use my razor gently around the other jacket to expose the rope pull it down from there and cut above where I scored with my razor
Can someone please explain to me 12:40-14:00 in a different way or what exactly he meant
I been wanting to understand this cause of the problem with the same colored wires
Bryan stick with your technique from start to finnish your super tech is hijacking the presentation and new guys need one instructors A B C also its always good to remove wire nuts see if they prepared connections properly , his comment about tie points at unusual locations not needed here either good class.
Also, the reason that the one guy mentioned all the low voltage being pulled outside at a super market is because it was a light commercial/commercial unit where the transformer is outside
Hi from Germany:)
“What human error can cause this to not work?” Lol!
if one winding on a coil or transformer is shorted they will still read resistance but parts are still bad and will not work properly.
If the guy would have started at the main breaker, where he was supposed to start he would've found the problem in 2 minutes instead of 2 hrs...YOU'RE FIRED!🤧 he's now a cap bandit😂😂😂
Every one need safety glasses.
Bosses way is the ONLY way ...ALWAYS
Instructor tells the students to put on safety glasses, but doesn't put any on himself. 😉
I really wanna get into reefer units but there’s no school for that.
If you have refrigeration skills, than get a job at a seaport. Thats where reefers are maintained until they are either loaded onto a ship or a truck. Carrier has a one week course, Its in Long Beach, Ca.
Get your foot in door first. A good reefer mechanic is a combination of electrician, electronics tech, and refrigeration tech.
I have a nest thermostat intermittent issue where its losing power e73 error code every two weeks or so. Ive connected a common and confirmed 24v at baseplate. Ive replaced the thermostat itself and baseplate, checked all low voltage wiring to ground and between each other with no continuity. Ive also replaced the contactor. All wiring connections seem secure. I got a call back and replaced the board now and transformer. If this doesnt solve it what else can it be im at a loss. Only other thing i can think of is somehow its losing power at the outlet but homeowner is saying when it happens other electrical items are working.
Also no float switch on this system
Run new wiring to the thermostat
First, I would switch the hot (red) and the common (c) with two other conductors like the fan and the heat wires. In other words, you probably have white to w and green to g, just switch those. If it continues after that then look to the door switch, or a loose connection. If no loose connection then you might have to replace the wire. Hope this helps.
@@baileysair Thank you i will
give that a shot
I would have left the sheetrock off so that it could air out and dry and told the apartment manager to have it patched back up after it dries.
How to calculate LRA to amper.
The camera person must be a fan of Pulp Fiction the way he/she jumps back and forth from one scene to the other.
👍🏿
Bert !!!!
How could I join the school
digital non programable thermostats are less problematic then the programable hands down,,,i remember having calls because the ther was not programed correctly ,,,,and they are all a little different ,,,you need the paper work for it ,,,,,i just hate them ..just saying ok back to the class ,,,,,,fun fun fun
not being able to answer is like watching dora
NUMMOS ALIEN @ 1:06:21. .THEY LIVE,BERT LIFE!!!
Way to much going on to understand wish someone would break it down in an order by themselves it would be much easier to understand
🍺🙂👍🏻
If you didn't bleed you didn't work
Teacher yells to much they need hand on
Not a big deal 😂😂😂