Advanced Modern Electrical Troubleshooting for HVAC Technician

This is a indepth look at modern electrical troubleshooting. In today's hvac units we see I/O as the standard control system. I is input and O is output. This is how unit controls and BMS will operate ac system and ac units going forward so we as hvac technician have to understand how to troubleshoot it.
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[@HVACTIME]

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[@mattcherian9489]

Great video. I've been a service tech on the commercial side for over 30 years. This type of training you do is what I would like to do for the apprentices within our service dept. It's a lot harder for new guys to get familiar with the hvac service techniques now than when I started as an apprentice.

[@bunnyman6321]

Go for it

[@bohnermasters]

This guy explains everything so clearly and you can tell he cares about educating. Fortunately enough I enjoy learning about new tech being an apartment maintainence guy :)

[@markm0000]

You can do anything with enough patience and determination.

[@elijahgoodman3140]

One of the best classes I've seen on you tube concerning our trade. Unless you do hvac in a plant setting, you rarely get exposed to SCR's. Thank you very much.

[@sparkytech8787]

Best recommendation is keep it SIMPLE!! Is the best way, I don't see how adding boards with thousands of components on is more efficient the more you have the les reliable. I hate working on the new systems, I'm old school since 1994

[@danuw3lls]

Less labor at the factory

[@robertwheeler8476]

I/O lets GO.... As a BMS (Automation) controls engineer.... All AHU's in the UK are having the proprietary controls removed and back to standard control systems. All Techs will need to understand BacNET (American standard). It is a great controls system

[@NicWolfer]

Was gonna say, we rip all that out and out in our own sensors, actuators and relays, we may still use their terminal strips but that’s about it

[@abazism]

Do you mean that they are designing standard units now instead of more complicated units ?

[@feedmebeast]

Hello, Thank you for the frequent training videos. In the industry for 9 years and like to learn or refresh.

[@stlbrian33]

Really appreciate you doing these videos. Great job.

[@char.s1ksmashing444]

I am a refrigeration install and start up tech for hussmann in so cal ems alot of what your talking about has been around for all 20 years ive been in the trade the last 10 the ac package units have started to be on tge modbus net control by the stores controller along with the refrigeration and even the lights in store and parking lot

[@wd8557]

When testing the thermistor's even if you have the needle meter leads, tape the thermistor to the unit, it's usually long enough and your done in seconds, instead of fumbling around. I saw a guru on here do that. He was testing on a 6 wire pin, ohmed out the first 3 all good got to the fourth bad used that tool to take the wire out and traced it back to it's location. Taping it up made it so simple.

[@HVACRILLA]

Thank you for posting your classes this is a huge help. 🤙🤙

[@ipman4715]

Thanks for taking time for this info

[@EverythingHVACR]

Well done Holden 👏 carrier rtu actuators address to the control board. I had one not working and not addressed from the factory recently. Great video, keep up the good work

[@mjalco7410]

Very nicely done

[@Sctronic209]

Signal Substitution is a valuable troubleshooting aid.

[@Kimbrelloo]

Signal generators are a tool that validates master controls and the man in the van !

[@rocker8692]

Why do we keep changing everything, old air conditioners lasted 50 years,just make those.

[@GOOCHIElicker]

Bc its a cash grab more likely for something to go wrong

[@mastadonwesley1042]

Yes sounds like bs to me. I learned hvac in 1983 & 1984 & now I being out of it since the 2000 timeperiod are as clueless as a never trained person.. It just ain't right.

[@anthonydaros8938]

Strong products put company’s out of business. The bits and pieces is a place they can control and make margins easily.

[@timhenderson6035]

EPA

[@wagnergitirana]

I empathize with you, but like the instructor says, using my interpretation, often times is not even the manufacturer issue. The issue here are the policies putting out by our government and its agencies, to meet environmental requirements of efficiency and safety. My personal opinion, it is all politically motivated to discourage the use of oil and its byproducts. Simple !

[@tomcostello5058]

Appreciate the knowledge! Thank you

[@Robert-ys9zy]

This is a hell of a good training vid. Thank you

[@HVACTIME]

Thank you!

[@rewernan]

Hello! I am from Spain and I have watched some of your videos and learned a lot, as I am starting on this complex world of refrigeration. I got curious about this video as I have recently finished a training on automation and plc programming and wiring with some LOGO and 1200 from Siemens, which has helped me a lot to understand. The industrial buses communications as you explained where every single sensor or actuator sends and receives information trough one bus and you just have your plc and your power outputs (contactors etc...) I truly think is the direction on we are going to. Big hugs from the other side of the ocean!

[@michaelanderson948]

1:08:00 can be less than 24 vdc ive seen 15 vdc as well as 5 vdc for a 4-20ma signal, depends on the controller

[@Natnat_816]

One of the best.

[@VoiD1x]

awesome work man , great video im 4 years in and was aware of most of the teachings, great reminders though

[@Safi.00197]

Awesome , dude I'm always following you from Pakistan

[@mdbabar9322]

I always watch your videos it's very valuable for us

[@megacisco69]

That’s been the same since I started 22 years ago. It did change a little

[@cristianjavier1485]

Thanks for teach to ones can’t effort pay that class. god bless u.

[@minaibrahim-uq4cr]

thanks i am watching you from egypt

[@Kimbrelloo]

Let's put Transducers on Window units!

[@robertwheeler8476]

Trane use LON and low level intelligent devices (Nodes on a network). Works really well. That is why you have to bind them. Basically you have to address it on the network

[@Kimbrelloo]

We used to be able to fix all manufactured equipment with the simple defrost clocks,relays, and components... When I first saw a control board after the Micarta Terminal board I knew we were F+&d..... Now there's GD Laptop running a Fkn Heat Pump and we're going to VFD on Residential!?! Damn....

[@youoweme5forreadingthisnam535]

Yup. 90% of the equipment I install and maintain on the resi side are inverter driven vrf systems. It's really efficient, but really expensive, unreliable, and very cost prohibitive to repair. The industry is moving that way for a reason. Designed obsolescence.

[@bunnyman6321]

My Guy Holden with the knowledge 💯

[@stanleykania7184]

I sit here at work for 8 hrs watching KZbin videos.. Electric degree from triangle technology and at the age of 51 and wondering if I should make a move to be a technician.. already have EPA 608

[@samparnell2242]

Holden awesome video man! I work in Australia in the same sort of heavy commercial space and this video has informed me a lot about a few things I’ve been iffy on. Top video mate thanks very much for the information

[@mikestevenson1819]

Thanks again

[@boilertech44]

A small Oscilloscope can be used to see the communication wave forms to see if the signal is working or pulled to ground by a failed component.

[@La2venida]

Wouldn't you be able to do this on a multimeter in VDC (obviously not as precise as am Oscilloscope). Which handheld Oscilloscope you recommend

[@nightone9720]

This stuff really isn't difficult. It's just new. The only problem I have with making things more efficient is that all these thermistors, transducers, and control boards are built so cheaply and break so quickly due to companies trying to be competitive with one another that it literally defeats the purpose. I just wish components were built with a better quality so that I dont have to replace these cheaply built overly expensive control boards and sensors. Customer buys an high end piece of equipment to save money but then the warranty ends and a $1500 control board fails and now all his savings are thrown out the window. What a rip off lol

[@Hurpdurpdipidydoo]

It’s absolutely a rip off and it’s been happening in the AC industry for many years the customers are the guinea pigs

[@mdbabar9322]

I share with my HVACR friends

[@Kimbrelloo]

We used to flip the armature in PSC motors before you could change windings (direction) on them or shaded pole motors

[@juanrestrepo3155]

Ya lo traduje ya lo estoy entendiendo gracias

[@wagnergitirana]

I’m glad I live in Houston, Texas…not California. Thank you for this video ! It clarifies a lot . Cheers .

[@mmmd3429]

Proud of those lower wages ☠️

[@Gcanno]

So many contractors don't do there jobs correctly , California let the Hvac Contractors mostly regulate themselves and the work was consistently not done right , If your paying for product or service you should get full value and efficiency.

[@realestateservicessaleshea99]

Very informative. Gone are the days of the line diagram trainers with the light bulb, bells and buzzers!🤣🤣 Thanks again for the videos SUPER-YORK!!! 🍺🍺🍺🥃🥃🏌🏻‍♀️🎯 Stay safe. Retired (werk'n)keyboard super tech. Wear your safety glasses!

[@bunnyman6321]

What's a air handler and what's it's function?

[@realestateservicessaleshea99]

@Bunny Man well it handles air (a lot), and its function is to distribute the air through ductwork *mostly * (Fan assisted)

[@bunnyman6321]

@@realestateservicessaleshea99 Thank you! I don't see much material covering that.

[@Kimbrelloo]

We used to carry cardboard on the van to initiate a defrost on heat pump condenser coils when the pressure drop , static pressure drop caused the defrost if the mechanical clock said let's do it!

[@dwaynes5983]

Nice video. Thank you. a lot of knowledge. I work with plc"s last thirty years. Same basic idea but on board. I guess it's a multi-layer where you really cannot repair it??

[@pinolanuts69]

These improvements to efficiency are making it more difficult for newer people to come into the industry

[@HVACTIME]

Very true

[@brad8665]

Yes they are. I’m kinda new and it’s a lot. I got done working on cars for many reasons and got into HVAC. The electrical is just as crazy.

[@eastcounty4605]

Hi, Do you have a video demonstrating this test on the sensors and thermistors?

[@andyreyes6464]

great video. can you make a video about the types of vrv board and their components, thanks

[@Dankbootystank]

What brand or model signal generator do you recommend?

[@WhiteTrashNobodies]

Keep in mind transducers can be mA also using 2 wire

[@HVACTIME]

Dont think I've ever seen those. Interesting.

[@ZRock7771]

Funny he mentions motor masters in carrier units, they have been discontinued now lol.

[@Kimbrelloo]

You can drive components with a generator and provide the information to you and the customer 😊

[@Subashtus]

Tnx sir...,

[@TheRenaissanceBuilder]

I hope you can take this constructively but dude you are all over the place with inputs and outputs. I highly recommend putting more planning and thought into lectures like this. I admire the effort man so hopefully you don’t take offense

[@arun4846]

👍

[@johnnyb8629]

This is why we need to demand "right to repair" so that we don't have these manufacturers making it impossible to troubleshoot the micro controls with out proprietary computer software that isn't available to the public. This is the way everything is going, cars, HVAC equipment, appliances , everything!

[@darekcieslik6838]

Our transducers use miliamp signal not voltage DC.

[@juanrestrepo3155]

Hermano tu puedes hacer las presentaciones traducidas en español para poder aprender te lo agradeceria

[@johnmorgan1677]

Comms is as we say is daisy chained.

[@isaacsanchez3966]

My question are you part of a school teaching this or this is your own. I'm only asking so I can look into attending please let me know?

[@cristiangaleon6817]

Hi sir pls can u help me with this error p121.almost all dx unit here showing p121 ,,my finding is expansion valve failure .is it right sir

[@La2venida]

Do you have a physical class

[@HVACTIME]

Yes

[@La2venida]

@@HVACTIME can send me details regarding signing up for one

[@davidthurston3346]

I am curious as to which city or region you work in.

[@michaelpersonale7396]

Is there any way I could get some literature on this topic?

[@HVACTIME]

I dont have a specific recommendation.

[@jasonjohnsonHVAC]

PTC VS NTC.

[@gordonrockafellow1211]

You need to learn the difference in an SCR and a Triac an SCR only can conduct in half of the sine wave. A Triac conducts in both half's of the sine wave.

[@hwtans2717]

He said prelavant...

[@2purplemartin1]

I think Trane calls that tool a MTA tool

[@DWAYNE2ism]

lennox

[@adu-darkogabriel5697]

Man how do I join you??

[@HVACTIME]

Live in the Austin Texas area?

[@station08]

Simply , its was mechanical...now its all electronic.

[@HVACTIME]

Yep

[@DudeWhatHappened]

Well it’s a good thing gas is over four dollars a gallon. And our dollar worth is worth nothing. So I’m sure people will definitely be able to afford automated air conditioners. This is for a select few merchants that want to have a fully automated system majority of places can’t afford this kind of automation. You can only finance so much…

[@axiomteck]

audio is needed

[@haroldbottom3474]

Its just a way to make everything expensive to repair.

[@prestigemechanical3600]

Over engineering at its finest. It gets really fun when you get a new board and the firmware does not support other pre-existing control boards and does not work. If you have not seen that yet believe me you will

[@HVACTIME]

The FUTURE

[@dwaynes5983]

I work with things like that all the time. Not anything works with each other made by the same manufacture.

[@Phyrexius69]

Sounds gone

[@HVACTIME]

Works on my end, what part did it not have sound?

[@Phyrexius69]

@@HVACTIME The whole thing doesnt work for some reason. Tried it again now and its still the same.

[@sboyd7551]

Volume sucks.

[@brianvargas5432]

You make a video clown

[@billyflanagan9657]

California can sweat for all I care

[@one_djenty_boii_respectful6090]

No sound