LEV/EEV Electric Expansion Valve Operation and Troubleshooting! HVAC Metering Devices!

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In this HVAC Training Video, I Show How this Version of an Electric Expansion Valve EEV Works and What's Under the Top Shell. This EEV Type is also Known as an LEV Linear Expansion Valve commonly found in VRF, Mini-VRF, and some Mini Spilt Units. LEV Metering Devices are also Commonly Found in Mitsubishi Units. I Show its Operation and Troubleshooting! Here is our other EEV Training Video: "Electric Expansion Valve (EEV) Operation and Testing! HVAC Metering Device Training!" • Electric Expansion Val...
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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 #hvacr #hvactrainingvideos #hvactraining #hvactraining101 #acservice #acservicetech #expansionvalve #LEV #TXV #EEV #meteringdevice #hvactechs #technician
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Опубликовано:

30 сен 2024

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Комментарии : 57

@redycardenas9117 5 месяцев назад

Once again. Best A/C channel on the platform on my opinion. Thanks for the master lesson

@acservicetechchannel 5 месяцев назад

I am so glad that you are enjoying the videos!!

@redycardenas9117 5 месяцев назад

@@acservicetechchannel hope you do a video about carrier infinity system. Feel lost every time I have to work in one of them.

@marianmarin3696 Месяц назад

Hello Ac service🤗! I have a Tesla multisplit system. I want to recovery refrigerant but the EEV are normal close. How may i open the EEV manual?

@chrisdeanndavison3626 5 месяцев назад

General question about EEV/LEV. Do six wire EEV/LEVs always have 2 commons and 5 wire ones just one common?

@acservicetechchannel 5 месяцев назад

That is correct!

@jasonjohnsonHVAC 5 месяцев назад

There are also different styles of stepper motors as well.....bipolar and unipolar motors.

@acservicetechchannel 5 месяцев назад

Yes 4 wire EEVs are bipolar!

@jasonjohnsonHVAC 5 месяцев назад

@acservicetechchannel always appreciate your freely shared knowledge....you are a good man, Craig.

@acservicetechchannel 5 месяцев назад

Thanks so much Jason!

@نبيلمحمدنبيهبسيوني 5 месяцев назад

Excuse me, I need a book on refrigeration, air conditioning and tender repair.

@Mareloko41 5 месяцев назад

I’m going to start HVAC school this summer. Your channel has helped me so much already. I’m ready to feel proud about learning all of this. Thank you for teaching sir! PS: any book for Rookies you could recommend me?

@acservicetechchannel 5 месяцев назад

Thanks so much for your encouragement! Actually our first book "Refrigerant Charging and Service Procedures for Air Conditioning" is a great book to start out with. We have over 2,000 reviews on amazon and its available at acservicetech.com/store thanks!

@alanmainwaring1830 5 месяцев назад

What you are describing is a stepper motor. This HVAC trade is becoming a very complex trade many thanks for doing this video.

@acservicetechchannel 5 месяцев назад

Yes, it is very similar to an AC stepper motor! Thanks!

@izzymoney85 5 месяцев назад

I greatly appreciate you Craig I'm not really familiar with the EEV/LEV and you are just introducing me to it's purpose gracias sir for giving me a rundown on these devices and how they really work 👍👏

@acservicetechchannel 5 месяцев назад

Glad to help!

@ChiefBridgeFuser 5 месяцев назад

Crude but effective cut-away. Thanks!

@acservicetechchannel 5 месяцев назад

Thanks a lot!

@dennisivakhov 5 месяцев назад

Are they problematic? They just look so tedious and junky looking Compared to a piston that will never fail Any feedback? I usually install residential TXV equipment never really messed with EEV yet

@YTsux24-7 5 месяцев назад

Great lesson as always Craig. We really appreciate the time and effort you take to make these presentations.

@acservicetechchannel 5 месяцев назад

Thank you so much for your support Tom! I appreciate you!

@Ray-wr2wr 5 месяцев назад

What are the symptoms of the bad EEV ?

@acservicetechchannel 5 месяцев назад

if its stck closed, it would be hogh superheat and the majority of the coil would be higher in temp then it should be, thanks!

@humbertomacias3239 5 месяцев назад

4000 pulses, that's wild!

@acservicetechchannel 5 месяцев назад

yeah absolutely!

@zekenzy6486 5 месяцев назад

Great Video. Thank you for sharing. Have a nice weekend.

@acservicetechchannel 5 месяцев назад

I always appreciate your comments, thanks!

@williamswan7779 5 месяцев назад

Pretty darn cool !

@imranshaik675 5 месяцев назад

What are the symptoms of eev which remains open partially and liquid refrigerant flowing in stopped indoor unit in VRF system

@acservicetechchannel 5 месяцев назад

if there is refrigerant flowing and no airflow, the coil will be very low in temperature and there woukd be frost.

@imranshaik675 5 месяцев назад

Why EEV doesnt fully gets closed in stopped indoor unit in vrf system. Is it gear problem or mechanical needle. As most common answer due to impure foreign particles preventing the needle to close completely

@Masterofrefrigerator9756. 5 месяцев назад

Can you tell me valve where the gets ground power for move the motor

@acservicetechchannel 5 месяцев назад

its just positive and negative dc ends from the circuit board, thanks!

@warenmann1042 5 месяцев назад

Informative video. On your site under quiz section the " Inverter Mini Split Quiz" question #10 asks " 10. How many thermistors are typically installed on a single zone system? above 0psi, the refrigerant...". what up with the " above 0psi, the refrigerant.." at the end... Thank You...

@SiElect1207 5 месяцев назад

Great Video Craig..Hoping I could have also the book for my reference.

@acservicetechchannel 5 месяцев назад

Awesome, thanks!

@danielkelley7422 5 месяцев назад

It’s well worth the cost

@AMCHOTC 5 месяцев назад

Great vid, Craig.

@jamesortolano3983 5 месяцев назад

This lady’s nd gents is why you need to subscribe to Mr. Miggs channel. Only testing resistance can you determine if the EEV ,LEV is operational. What a excellent explanation, demonstration nd visually satisfying post. Thankyou so much Craig for all your posts , editing nd much needed content for us guys in the field ..

@brianmcdermott2430 5 месяцев назад

Great info. Thanks, Craig.

@acservicetechchannel 5 месяцев назад

Brian, thanks a lot brother!!

@NorCal-refrigeration 5 месяцев назад

🤘⚡️🤘✨✨✨✨

@acservicetechchannel 5 месяцев назад

Thanks so much Dave! You are awesome brother!!!

@robertwynn3453 5 месяцев назад

Hi craig please can l ask if you could explain the air source heat pump install for a hot water system thanks from uk.

@Adam-ul2px 5 месяцев назад

Is there any reasoning (besides price) for one over the other? The LEV looks like a Carrier product to me "look what we made, just like an eev, but more expensive and wont last as long".

@acservicetechchannel 5 месяцев назад

There are more steps of control and more strength for closing the pin position due to the gearing.

@Adam-ul2px 5 месяцев назад

@@acservicetechchannel I dont see much of this stuff as Im fairly rural and have a set amount of hvac equipment in my area but the LEV guts looks like the inside of my 5 y/o's toy cars. Everything Ive ever heard was EEV's are 100x better control than a TXV, now LEV's give more control than EEV's. I really want manufacturers to focus with a laser on reliability, enough with gizmos for a bit, who cares how efficient it is when the coil leaks after 3 years?

@realSamAndrew Месяц назад

@@Adam-ul2pxthe gubmint wants it efficient. The mfgs love that they can charge out the wazoo AND you have to buy it from them, no universal or aftermarket.