Checking the Refrigerant Charge on a Running R-410A Inverter MINI SPLIT Unit!

In this HVAC Training Video, I Show If You Can Check The Refrigerant Charge on an Inverter Mini-Split Ductless Unit on a Service Call by measuring superheat and subcooling. Supervision is needed by a licensed HVACR Tech while performing tasks as Experience and Apprenticeship garners Wisdom and Safety.

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Cooper&Hunter Systems on Amazon:
Cooper&Hunter website links-
Multi-Zone Inverter Heat pump and all 5 Indoor Units:
Multi-Zone Inverter Hyper Heat pump and all 5 Indoor Units:
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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 #refrigerantcharge #charge #acunit #minisplit #refrigerant #ductless #superheat #subcooling
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[BMack]

I think a lot of this is over people's heads, but I appreciate your detail and technical knowledge. Well done!

[seanbaxter]

Graig is best HVAC educator ever you my friend are a GOAT I have learned so much watching your videos -Thank you very much for all you do for your trade, a true gentlemen and scholar ..

[mike-ypuk]

Great Video. It's nice how you put the temp and gauge together and explained superheat and subcooling. The explanation given was very understandable. Great teacher

[steveevernham]

Very good teaching of mini-split systems, one of the best I have seen, thank you.

[lovermansmith]

Thanks ! Good job ! That cut away of the accumulater is cool along with the metering devices . I'm a fan . Thanks again & again good work !

[erichemard]

I work in Saudi Arabia, mini splits have been the standard here for well over 10 years. Here we can see ambient temps at a mild 135-140 degrees. When checking a charge it’s not uncommon to see units charged at 2-5 degrees of superheat. Anything higher than that during the summer time and the high pressure sensor will shut the compressor down. Winter time where the temps dip down to 40 degrees we normally are out recovering and charging back to the factory specifications. The units are wonderful but they are very finicky

[kennybaker]

So in other words you can check it but it could mean 100 different things. 😎 I'm back where I was before the video lol.

[mike-ypuk]

This is my favorite ac service video. It's interesting how this unit uses temperature to regulate pressure. In automotive ac we a focused on pressure. What an eye opener

[am]

Thank you for all your teaching videos. They are making huge difference around the world.

[philipjohnson]

That was great i so appreciate your wonderful knowledge on Mini splits take care

[Angelo-yjbp]

I take care of over 300 minisplits here in Florida. this numbers work for me:
Indoor blowing between 55 to 60
Outdoor compressor FLA as close to what the name plate says.
Superheat between 1 and 5.
clean filters, clean coils.
low pressure is different between minisplits.
The manufacturer can give you the numbers expected based on model, tonnage, indoor and outdoor unit combo, etc
don't over think it.

[jimmysegovia]

thanks, Craig!!!! awesome presentation as always.

[gilbertjaramillo]

Thanks for the great information on mini split pressures. I just bought one and now I will be able to pressure test and charge the system. I love all your videos and am an avid fan of all of them.

[jynnandtonnyx]

Perfect video! I knew I was not educated enough with these and your comments highlighted what I need to study next. Thanks for pointing me in right direction

[Hoyerlift]

I really appreciate you putting this video out. Many clients are going this way of the mini split systems. Thanks.

[rogerf]

Great video! Thx. I especially like seeing the cut open EEV and the accumulator. The accumulator is a bit of a different design with the input at the top and then 2 internal tubes running to the compressor.

[pabloflorentin]

Hi! Acabo de ver que estás subtitulando tus videos al español y t agradezco por ese motivo. Ahora puedo entender al 100% tus videos. Mi inglés es muy básico pero ahora no hay excusas para seguir aprendiendo. Thank you so much!

[jimhuerta]

Very helpful and in-depth information, thank you, you guys are outstanding!!!

[MarianKowal]

You'll Split unit explanation is the best what is over here.

[patwaldrip]

Great video and excellent explanation of how to install a mini split system. Thank you, for sharing.