Electric Expansion Valve (EEV) Operation and Testing! HVAC Metering Device Training!

In this HVAC Training Video, I Show how the Electric Expansion Valve (EEV) Functions, Common Problems, and Testing. Knowing the Operation of an EEV allows the Technician to have a Better Understanding during the Troubleshooting of Problems. Supervision is needed by a licensed HVACR Tech while performing tasks as Experience and Apprenticeship garners Wisdom and Safety.
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⚠️ Disclaimer:
Information in this video is intended for educational purposes only. Any work related to the topics in this video should be performed by licensed technicians or by apprentices under the supervision of licensed technicians. AC Service Tech LLC is not responsible for any possible damages or injuries caused by the use or misuse of any information provided.
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#hvacr #hvacr #hvactrainingvideos #hvactraining #hvactraining101 #acservice #acservicetech #EEV #operation #testing #meteringdevice #TXV #expansionvalve #technician #hvactechs #hvactechnician #explained
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Shop through Amazon! Your Purchases through Amazon provide a means for channels such as mine to earn advertising fees from all purchases after clicking through. Prices are the same as normal.

[@acservicetechchannel]

Mini Split Book on Our Website- www.acservicetech.com/mini-split-book Mini Split Book on Amazon- amzn.to/3ytHJSs Mini Split Book on TruTech Tools- www.trutechtools.com/BooksGuides Mini Split E-Book on Google- play.google.com/store/books/details?id=HN-iEAAAQBAJ Mini Split E-Book on Apple- books.apple.com/us/book/id6445178399

[@timdestasiohvac]

Craig your brand is single-handedly changing the service industry for the good! Well done!

[@acservicetechchannel]

Thank you so much Tim and I'm looking forward to meeting you at the Symposium in a couple weeks!

[@musakavalci9470]

Would this be transferable to the systems in the UK? For example, does it have both voltage differences and temperature differences?

[@l0I0I0I0]

How much torque do those tiny motors have?

[@Thelongmanable]

*_It's a servo valve!!!_*

[@_HVACdad]

You my friend, are going down as one of the best HVAC teachers ever 👏🏼👏🏼

[@philips170t]

Agreed.

[@aleonyohan6745]

Absolutely brilliant video

[@jammermac381]

I feel like I’m back in college studying electronics technology but with more hands on training. You would make a great professor at a university sir. Thanks for the free college classes. 👍

[@MichaelSmith-pg6gi]

I've heard that " clicking sound " so many times when starting up a newly installed minisplit but never knew that is was the metering device. These videos really give me an edge in the field.

[@oderamichael9994]

this really helped me during replacement of 2.5hp LG compressor, i had to remove the EEV to create space after the workdone i fixed the EEV clockwise direction and the system couldn't discharge refrigerant i came across this content that helped me understood the magnetic force and i clipped the EEV in anticlockwise direction and it worked 💪 ❤❤❤ really grateful 🙏

[@mazarat4768]

Thank you bro. My problem was like that. But I knowed now

[@HVAC-TECH-Les]

This is by far one of the best EEV/EXV classes I've ever seen.....such great information, love the cutaway. Thanks for the video.

[@Uncle_Jesse]

outdone yourself....I bought your manuals out of respect, going to gift my apprentice because real recognizes real and I cant explain like this...amazing job my friend

[@acservicetechchannel]

Thank you so much!!!

[@zipperdingo6385]

Craig, your videos always stand out in content and clarity, many thanks for a new value

[@chrissapp9243]

Fascinating... This explains the "rattle" on the old FloTronic EXV (Carrier) at start up when it drives closed for pump-out at start up. Same operation as these, just bigger. Glad you made this video!

[@jasonjohnsonHVAC]

Absolutely fantastic tutorial on the operation and how it actually works. Bravo Craig

[@LC-qi5ff]

Thank you! I was going to buy a $200 eev magnet tool but now i know all i need is an eev coil head! 🌟

[@stan-r]

Thank you so much for making this video! This really helped me to understand how the EEV works and how to troubleshoot them.

[@MrZa3000]

You make it easy to understand with your flawless explanation. God bless you.

[@kylekisebach3966]

As design and commissioning engineers, we rarely pay enough attention to these details - so I appreciate your detailed work here.

[@jasongoertzen]

This is the video I have been looking for for so long.

[@marekracko2364]

Excelent video. The best decription of function and principle EEV. Big thumbs up !!!

[@scottallen5182]

Fantastic video from one of the greatest teachers of all time!

[@rv10flyer84]

I’m impressed dude. I wish I had more instructors like you and tech school. Although mine were pretty good down in Lawrence County Georgia- Gwinnett Tech. During initialization, I think it only seats it in one direction. The manufacturer knows how many pulses it takes to get to the other end.

[@shakaibsafvi97]

Best Expansion Valve Video I have seen ! Amazing Detail ! Salute !

[@luciancostea9223]

From Romania,thank you for the presentation, very useful and perfectly presented. Respect👏👏👏

[@hiz-n-lowz1577]

free Top G!

[@mwdub02]

Free Andrew Tate

[@JasonNYC5454]

Thank you for this great video. I always clicked "Thumbs Up" before watching any of your videos.

[@moralatu]

Super informative video , thanks for taking your time to help other people I really appreciate you doing this

[@ReliableHVACR]

This is great, had issues with them but it ended up being a faulty board. So helpful to see the guts in action

[@Cloakedpyro]

Was that voltage issue on a Daikin or Fujitsu by any chance?

[@ReliableHVACR]

Refrigeration side I see them on walk ins, it was an Intelligen by Heatcraft

[@fernandofrancisco3106]

Excellent video. So much information to learn, I love your videos. Thank you sir Have a great weekend 🎉

[@omarfue556]

Really good explanation on how these valves work. Thank you.

[@mitsos306ify]

Great video , thanks for the knowledge! From what I understood, it is a kind of specialised stepper motor! Now I have to find an application for it!

[@thatcaligula]

Just WOW! This is the level after professional, illuminating!

[@Mohamed-Fadl]

Thanks for the good information. I wish you all the best. Excellent video

[@whatwoulddennisdo7243]

Thanks for the wiring orientation. I made one up but did not have the specs on it as it was a 6 wire. Been able to successfully replicate the results here, many thanks from me

[@musakavalci9470]

That was beautifully explained and presented. Thanks

[@whitesheatingairappliancer7101]

Whirlpool had this they might still have it on some of their french door refrigerators but five years ago they had this and we learned about training on it and one of the instructors he mentioned there was a filament that you can put up next to it and it'll show the magnetism. It was some special filament. I forget what it's called. Great video. Your new book that I purchased arrives Tuesday looking forward to it

[@kainzappe3349]

Thanks that’s very helpful I’m not very familiar with mini splits. Love your videos 👍🏽

[@stefano8809]

thanks for masterful and deep explaining

[@brianmcdermott2430]

Great info. Craig. Thank you. Great video.👍👍👍👍👍

[@Josh-pu4wn]

Ive been looking for this info for so long, thank you sir

[@rondouglas6486]

Excellent video....excellent quality love your channel!!!!!!

[@Cloakedpyro]

Just had to replace one of these EEV's on a Daikin at tech supports direction, and at the end of replacing it i still had almost no clue what it actually was. This vid came out the next day, lol thanks for your clear presentation. I bought your 1st book, and am eager to order this one as well! These minisplits are mysterious to me, and i dont necessarily like servicing them, but they definitely seem like the "way-of-the-future", so thanks for keeping us ahead of the curve!

[@acservicetechchannel]

Thank you so much Cloakedpyro!

[@aleonyohan6745]

​​@acservicetechchannel I work for fluid Chillers and I am pushing hard for us to have these on all of our Chillers especially our large low temperature Chillers. Controlling the superheat especially with large load swings is extremely important for efficiency and the life of the compressor.

[@rodgraff1782]

Carrier had these on their flowtronic chillers. I had to replace two. They were very large, and made of brass. Pipes were 1 1/8” in and out. Ran on the same type of stepper motor, but used a lead screw to drive a slotted piston up and down. Two refrigerant circuits, 125 tons each. The chillers were an absolute service nightmare.

[@johndove5902]

so:this is like an electrical replacement for the mechanical valve known as the txv.l Very awesome video.

[@drrenard1277]

Stepper motor valve. Very nice and precise. I would have thought there would be an encoder but going full out and in is good way to get a blind position unless there is something stuck (not sure if there is a situation that causes that)

[@haunguyen-tr2zm]

it is a very useful training. thank you.

[@rolanddejesus8685]

thank you very sir for a clear explanation....

[@jspinosa50]

Very informative explanation, thanks

[@alenskykiteboarding6292]

Really excellent tutorial. Bravo

[@norcal_inspector]

This was a great video! I'm gunna buy the book

[@thesilentonevictor]

Thanks for the educational video

[@raulgarcia528]

Gracias amigo exelente explicacion.

[@Bluezhealer]

💪🏽Appreciate the vids very informative ;You’re Making HVAC C00l Again 🤘🏽😎

[@ChristRegeneration]

Great video. Bravo 👏

[@l.crossjr]

Just bought the book. Awesome content

[@acservicetechchannel]

Thanks a lot!

[@gaillaffer7579]

Great video. Thank you.

[@edgar20109]

Great video, it helps me a lot, thanks!!

[@narcisosanchez243]

Hi, glad to get in touch with you. I work as an air conditioning technician for Mitsubishi Heavy Industries in Spain. I am pleased to inform you that I have developed a small tool to check the EEV of the different air conditioning equipment. Carrying out tests on devices for domestic, industrial, VRV and Aerothermal use of the previously mentioned brand and also domestic Hisense. These teams mount EEV from the manufacturers FUJIKOKI, SANHUA and SAGINOMIYA. With the device, the technician can verify three points that I consider important in the diagnosis of the element: - If the A/C equipment pcb transmits the signals to the EEV. - Measures the resistance of the EEV coils. - Finally, it can be opened - closed automatically, or manually select the number of opening or closing pulses. If you find it interesting, you could expand the information you consider appropriate. Greetings

[@drewc7479]

Where can I get that info ?

[@narcisosanchez243]

@@drewc7479 Hello, I have uploaded another video and I think you may be interested. Greetings kzbin.info/www/bejne/fmHNe6Kji9Fpnqc

[@robertoalvarado9424]

???

[@Chris-gy1hf]

Great service video on these

[@shamsheralam8862]

Very useful and very good explanation thanks

[@stevengilber1153]

Excellent Video

[@neilcomparetto5282]

Great video Greg!

[@FadiHamoud1980]

Really great video. Thanks a LOT.

[@acservicetechchannel]

Thanks Fadi!

[@JuanTodoli]

Excellent 👏

[@grashoprsmith]

Your videos are top tier

[@davidcross27]

Great video, thank you!!!!

[@kalogpanag]

Ubelievable video explaination!!!!! WELL DONE!!!! Good to had more than 2 same eev's.... 😁

[@dutch.818]

This a great teacher

[@indiantraveller194]

I'm biggest fan of yours sir 😘🇮🇳🙏

[@AIthings82]

Very interesting as always.

[@hashimwaheed4906]

great video!

[@wd8557]

Excellent

[@nestorgana9238]

I like the explanations.

[@norbertg7946]

Great explain ....

[@gingerstrand6153]

Thank you!

[@josecarlosmejia9632]

Great video

[@techman6431]

Very great explanation and practical Thankyou

[@acservicetechchannel]

Thanks Techman!

[@math1412]

V good representation , thx alot 👍👍

[@HVACShopTalk]

That was great, thanks.

[@HamidParesh]

Amazing video ever

[@inothome]

Great explanation of the stepper motors in EEVs. And thank you for saying "negative"! Seems everyone these days says "plus" and "minus" when referring to DC polarity and yes, a pet peeve of mine. Positive and negative dammit! lol

[@antoniobragancamartins3165]

Very good! Now i understood! Great!

[@acservicetechchannel]

Antonio, awesome, thanks!

[@RajSingh-vd9om]

Thanks!

[@paulcandiago9339]

Thank you

[@joneslmofokeng5924]

Very informative.

[@petyopetrov2048]

perfect video thanks a lot for

[@eddelromero5692]

Thank you sir you the best...

[@nishn111]

I have not seen anyone do such detailed investigation on valve, everything possible is in there in video.

[@samhaazratechnicalsupport]

Very niece explain sir .love you sir 😘🇮🇳

[@michaeljones1664]

This is very much like how a stepper motor works.

[@rajeshkingson]

You are really awesome

[@CITRA_AC]

thank you

[@caffeinatedinsanity2324]

320 pulses for full travel is a good resolution but if you had something a little bit less precise, there's always the method of "half steps" that you can use that's not that much more complicated. It will double your number of possible angles you can position your motor at.

[@qcsupport2594]

Epic!

[@hackfreehvac]

@9:30 many use say 1500 pulses and even into the thousands to go from full closed to full open. The stepper motor driver can do 1/2 step or 1/4 step down to say 1/8 etc by applying pwm varied pulses to the next pole while the first pole is still energized to clock the magnetic field between the two and then trims the first coil pwm down until it finally clock's to the next field. So then it an take 100+ various steps to do one rotation and have more precise control. On my DIY I just do full step and it takes right about 255 pulses to go from closed to open.

[@surajhazra8053]

Thankyou sir

[@indiantraveller194]

Good explain sir 😘🇮🇳

[@joeery5699]

Tqvm, i thought it was up&down solenoid..now i know

[@jcaleca60]

Basically what Doing changing the polarity on DC Like on a call window To go up-and-down reverse positive and negative To the motor

[@gaborkiss2819]

Thanks, it was useful

[@acservicetechchannel]

Glad to hear that!

[@mikkolempinen2717]

Wow thats cool. It can turn the valve without touching it. It works like a stepping motor. 🤓

[@acservicetechchannel]

Absolutely, thanks!!!

[@marializianichols648]

And of course if we use pwm signals we can split steps into microsteps of 1,8 degree divided by 256 ...so the valve can control the evaporator superheat with amazing precision.

[@oneplanetimmigration3609]

very nice

[@ITR30]

Informative video 👍

[@acservicetechchannel]

Thanks 🙂

[@Tamilsongs2813]

thanks sir today i subscribed