How To Vacuum Down a Mini Split with Analog Manifold Gauges

Рет қаралды 273,040

Күн бұрын

Steps To Vacuum Down a Mini Split using Analog Gauges
Amazon Link to Vacuum Pump: amzn.to/2QmQK8Y
Amazon Link to HVAC Gauges: amzn.to/3DSiBIY
Amazon Link to Mini Split 5/16" to 1/4" Adapter: amzn.to/3OuyRl1
Written Steps
www.hvachowto.com/how-to-vacu...
Our picks for best mini split units: www.hvachowto.com/our-picks-b...
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Пікірлер: 301

@HVAC_Mechanic Жыл бұрын

UPDATE: I made an update video that shows more details and how to check for small leaks. Here is a link. kzfaq.info/get/bejne/es2Rg7OqpsC3hKc.html The line set can also be tested for leaks with a low cost can of R152a propellant. Before vacuuming the unit, the line set can be filled with the R152a and tested with soap and water for any leaks. KWIK-E-VAC on Amazon is R152a. Here is a link. amzn.to/3AlXVpH

@JackofAllTrades1 11 ай бұрын

I actually run the AC in my classic 70s car with R152a. I use canned air duster which is the same. Thanks for the tip.

@jkk040 6 ай бұрын

Thank you for sharing your expertise. One question is that the port for vacuum is no need to remove the valve core. Thanks in advance.. John

@mikafoxx2717 3 күн бұрын

That tip is golden. I wss wondering how to do a bubble test without getting a costly nitrogen tank to verify, and dont want to trust beginner quality vacuum pumps without having a quality micron guage. The unit itself is well under 1k so it would be silly to pay 5x that for an install even IF you brick the thing or shorten its life. Pressure test shpuld be dome before trusting any mediocre vacuum because a fraction of moisture from above 500 micron isn't immediately fatal but a refridgerant leak sure will be.

@marcus_b1 Жыл бұрын

This is possibly THE BEST and easiest mini split vacuum video on KZfaq. 99% of the videos on KZfaq either skip this part in detail or don't explain it well. For the record: YES I DID USE THESE INSTRUCTIONS to vacuum a non DIY mini split and it's been working with NO PROBLEMS. HVAC "contractors" or "Con-tractors" wanted to charge me $400-$800 just to vacuum. Like I told the last guy "You all keep overcharging and turning down work it won't be any work left sooner or later".

@patrickkelley8177 Жыл бұрын

😂 I've been seeing these con-tractors losing their mind in the comments on minisplit social media ads. They are scared of this tech!

@haulotteConstruct 11 ай бұрын

I'm not a HVAC contractor, but am a contractor.. I just gotta pipe up and say that cost was fair! I can't even open my door for less than $300.. You gotta keep in mind, insurance, fuel, licencing, experience, man the list can go on and on.

@raindogs451 9 ай бұрын

You literally get what you pay for. Google has turned everyone into armchair genius's.

@oshitomaha 5 ай бұрын

@@haulotteConstruct300 for an hour of work? $100 for your parts and insurance , and $150 per your hour of work assuming you’re driving from 15-30 min around the city. $300 is too much and $400 is insane.

@chriswitek9455 5 ай бұрын

Overhead, profit, gas/insurance/wear, time, knowledge+skill all adds up Figure its an hour hold under pressure 30min to setup/pull a vac, 15 to disassemble/close up/pack up tools in the truck. Add in a 30min drive each way(could be more could be less) and youre at 2:45min from start to finish time wise. A set of gauges and a vac pump would cost you 150 bucks from home depot. 400 sounds about right, 8 is nuts unless its a 3am emergency. Now youre more then welcome to do it yourself, buy paying a tech also means if it doesnt hold a vacuum theyll correct it. If they mess up theyve got refrigerant ready to go. When i quote clients (different business) i factor in 10% for overhead and 20-30% profit. That would put this job at 300 for me and i dont have the overhead a licensed hvac tech does. @oshitomaha

@snackbardipper 10 ай бұрын

The only video on youtube with a comprehensive explanation of the correct way to pull a vacuum on a mini-split

@chrismartins4932 Жыл бұрын

😳😳 someone please give this fella a medal 🏅 been searching for a simple and straightforward video on how to vaccum a system and everyone seem to be going into some sort of rant and still not much information to take away and then I found this and my whole life changed never been so desperate to save a vidoe.thank you so much sir👌🏿👏🏿👏🏿 air con guys in the UK trying to charge £300 and I have 2 unit to do.

@joseg.1301 Жыл бұрын

Thanks bro. Saved me 800$ I just needed the lines vacuum. Straight to the point no BS. Thanks again.

@giucenation 2 жыл бұрын

Best and most clearly explained vaccum procedure out of the last 10 or more videos I watched. I had a leak (or so I thought) turned out it was the cap on the vacuum pump. Helps to close the valve on the guages before shutting off pump!!! Thanks!!

@captcaveghost5570 Жыл бұрын

This is THEE BEST Video on YOU TUBE on how to Vacuum the Mini-Split Lines. I have never done this before but you made it SO SIMPLY and EASY to follow. Other videos do not go into the detail that you did but your video gave me the confidence to do it myself and IT WORKED PERFECTLY! The HVAC guys wanted almost as much as I paid for the entire Mini Split to do this which would have doubled my cost. THANK YOU SO MUCH!!

@raymondpalacios3032 2 жыл бұрын

Installing a mini split today. A friend of mine had the gauges and I borrowed them. Simple enough and your video simplified it further. Thank you.

@MrMarineGomez Жыл бұрын

Man thanks so much for your video! The first mini split I installed, they charged me $285 just to vacuum it! I spent $180 on a pump and gauges and adapter and doing it myself! Priceless Info since I’m currently Installing mine in my bedroom! I’m currently letting it vacuum but soon I will have cold air and won’t have to call the HVAC guy no more!!

@emilioloera1411 Жыл бұрын

This is exactly what I was looking for. I'm planning on installing a mini split and was planning on having a contractor come out a vacuum the lines. This video gave me the confidence to do it myself. Great job on this video. Thank you so much for sharing this information.😎👍

@Ultimatelocke Жыл бұрын

How did it turn out?

@mnkybizzz 2 жыл бұрын

This man has turned something very simple into art. Fantastic video. 👍

@bigfranksworld 11 ай бұрын

Exactly what I needed to see. Going to be installing a mini split for the first time in a week or two. Thank you!

@Justin-wl5gi Жыл бұрын

Thank you! I was able to full install my minisplit by myself with your video and tool recommendations. Your the man! Thanks a bunch!

@ceejay8078 2 жыл бұрын

Yo!!! You just saved me 300$!!! I just installed a mini split and needed only the lines vacuumed, I got a quote of 250$ and 50$ for drive to my house. I ended up buying a manifold gauge set for 83$ on the Walmart app and bought everything else you posted from Amazon. Thank you so much for this easy to follow guide!! Man it feels good that your video helped me out during and save me a couple bucks!

@michaelnguyen370 2 жыл бұрын

can do it for free... autozone and o reily lets you borrow the pump and gauge!

@marcus_b1 2 жыл бұрын

I was quoted $800 lol.

@Gsxr617 7 ай бұрын

@@michaelnguyen370autozones manifold gauge doesn’t work on mini split set ups - there hoses are 1/2 and mini split requires 1/4 hvac hoses

@lokey5430 4 ай бұрын

@@Gsxr617you gotta buy the adapter

@alixxworkshop846 2 жыл бұрын

This video was very usefull.. 600eur costs 2 AC Installations in Slovenia,now I've done everything myself and It works perfectly... Thanks for upload,It helped me a lot!

@JO-nh6mo 2 жыл бұрын

Here in Austria I got an offer for -3000- euro for an installation (work and AC unit for a small room) , excluding costs for electrical wiring. So it was not a difficult decision to do it myself, this video helped !!

@alixxworkshop846 2 жыл бұрын

@@JO-nh6mo I understand you. I usally go for couple days in Steiermark and I know that the prices of everything are just crazy...

@jadesumsion Жыл бұрын

Thanks. I needed to k ow how the blue line comes off. You nailed it.

@blacksheepsquad9294 Жыл бұрын

I've already installed one mini split and on my second. Thanks to the guidance of this awesome video.

@tomsorensen3624 3 ай бұрын

Great detailed video. No grey areas ,just straight to the point and detailed information. Thank you.

@lifeisgood612 2 жыл бұрын

Prob the best video on here ,installed 2 units last week .thanks brother

@cevink1804 2 жыл бұрын

Amazing!!!! Was able to install my mini split before family came over Thank youuu

@din0kill Ай бұрын

Thank you. Did my vacuuming and charging 1st time and your instructions were perfect and simple to follow.

@Twilight-Imagery 2 жыл бұрын

Very nice job with a good step-by-step explanation of what to do when and how. Thank you. Oh and thank you also for NOT having loud music going and jumping into the opening of your video with a bogus “WHATS UP KZfaq” scream! LOL… Subscribed…

@SparkeyCox Жыл бұрын

I was almost ready to hire this out - I will come back after install and give you an update. I loved how you explained on the video.

@jkhandy1 2 жыл бұрын

Great video! Very clear and easy to follow steps. Thank you!

@nicholassylvester6502 Ай бұрын

Thank you for this video, I was able to install my Rovsun mini split following your tutorial

@giuseppebuzzanca381 2 жыл бұрын

Fantastic, cristal clear, instructive! Thank you so very much!

@Ilikepicking Жыл бұрын

Good video did one the other day the same way works perfect and saved hundreds of dollars.

@mikemitchell7505 Ай бұрын

It’s already been said over and over but I had to say it too. Outstanding video! Perfect explanations! Thank You! BTW. Gauges can be bought at Harbor Freight for less than 30. Vacuum pumps can be rented from auto parts stores etc.

@januario66 Ай бұрын

Thanks for the video,I just installed my Mini Split and saved $250 I bought a vacuum pump and did what you did,step by step and had a leak that would be a problem,but vacuum pump helps Thanks

@Ricky_Mason 8 ай бұрын

Simple and straightforward. Thanks!

@alexmahabir6755 Жыл бұрын

Very simple and easy to understand thank you.

@joelrosenwinkel5467 2 жыл бұрын

Hey great walk through, super easy thanks!

@miguelhuerta5826 Жыл бұрын

I think that after releasing the refrigerant onto the lines. Then, you should close it again to disconnect the vacuum valve. Then open agai. This way you only lose a minimum amount of refrigerant.

@carlosv4312 11 ай бұрын

Saw another video where the guy put 1 pound of refrigerant inside and let it sit for a while to see that there are no leaks with positive pressure. Then he disconnected with the 1lb of pressure instead of high pressure, so lost minimal gas. Then opened all the way

@jerrylegocki1157 2 жыл бұрын

Great and very helpful video!

@tonylam583 2 жыл бұрын

Thank you, thank you...awsome! Just the video I was searching for.🖒

@Poekieman Жыл бұрын

Well, that seems easy enough to do. Thanks for the video.

@joseluissosa-kx4nj Жыл бұрын

I like yr explanation on Analog dials and digital.I have the same vacume pump and manifold I use then on my 2 minisplits inverters I have been thinking of buying a digital micron gauge"but too expensive"Il just continue to use the oldschool equiptment !!it hasnt faild yet¡¡

@michaeldivincent9487 2 жыл бұрын

Great video, thank you so much for sharing.

@JuhaErkkila 9 ай бұрын

Thanks for this very clear explanation! You certainly know yor stuff! THANKS!!!

@squadman3376 2 жыл бұрын

Great job. I'll be doing this. Do you torque the line set connections? Thanks .!!

@patrickmuenchen1863 2 ай бұрын

Awesome video. thanks. Getting ready to install mine and this helps greatly.

@HiepNguyen-zs4up Жыл бұрын

Really good simple video to understand 👍👍👍👍👍

@user-ji7zz2om5x Жыл бұрын

Thank you for your mini-split videos! My Mr. Cool unit quit heating efficiently. To service I would like to vacuum, check for leaks and recharge. I'm assuming vacuuming is the first step. Do I CLOSE the two valves on the line set to do this. Then re-open them to charge?

@lookoutleo 2 жыл бұрын

very informitve, first time you connect the adaptor do you have to fit or remove any valves inline between the gages and minisplit

@SuperRobkar Жыл бұрын

Thank you for making this video. Helped me. Does it matter which way the yellow hose is installed? I notice it’s reverse from the other two

@bradmishawaka Жыл бұрын

I appreciate the video!

@joelschrock4590 10 ай бұрын

Great video very well explained

@ffsteel111 Жыл бұрын

I have a dual zone system so I have two low pressure ports. Do I need to connect my blue and red hose to pull a vacuum on this unit and after I pull a vacuum do I fill with 410 A on both low pressure hoses? Or do I connect just a blue one and my yellow line to my 410a

@toolman380 Ай бұрын

Great video, helped out a lot

@simonwilliams2455 2 ай бұрын

Great job very helpful indeed

@raindogs451 9 ай бұрын

Out of curiosity, I called a tech guy at I know at Carrier. This morning, he told me once when he was in the field, he couldn't get his micron gage below 550. He re-pressure tested with a tiny bit of 410 as a chaser. At 300# for 30 minutes. No leak. Because he used some 410 as a chaser his electronic tester found a tiny leak. 300# of Nitrogen for 30 minutes is valuable, but it's only one step of two. The 300# test will not reveal small leaks in 60 minutes, but will drain the system in 20 days etc. The micron gage will find small leaks.

@sophiegrisom 20 күн бұрын

Thanks. Ready to vacuum the lines on my Della mini-split (relabeled, most made by Medea of China). I have the Harbor Freight gage set (automotive) and their vac pump, similar to your setup and frustrated I had no fitting for the mini-split port. Should have found this youtube earlier. Down until I receive the adapter you mention. Thanks.

@victorm5071 Жыл бұрын

Excelent video brother, thanks a lot.

@StoicThrower Жыл бұрын

I had to laugh. Looks like you bought the pump and manifold the same place I did 😁 Makes for an awesome instructional video. Everything is identical!

@brianw6814 9 ай бұрын

Thanks for the video. Some mini split manuals indicate to open the high-pressure valve by 1/4 turn for 5 seconds before removing the vacuum connection. This allows positive pressure in the lineset to prevent 'sucking' in outside air when the vacuum connection is removed. Fully opening the refrigerant valves before removing the vacuum connection (as you did) also prevents outside air from being 'sucked' into the lineset, however, in that scenario I think you lose refrigerant from the lineset that gets 'sucked' into the vacuum hose, because the vacuum hose also was in a vacuum along with the lineset before the refrigerant is released. The refrigerant 'lost' in the vacuum line might not be an issue if your lineset is less than 25 feet, since the mini split may be designed to contain sufficient refrigerant for a 25 foot lineset.

@joshsoorlin579 8 ай бұрын

This was the one thing i noticed he didnt do that others seem to prefer to do, thanks for clarification

@IADHDD Жыл бұрын

Did your Adapter have the small part that presses the shrader valve on the compressor connection? Some take off the shrader valve on the mini split compressor connection

@nunyabusiness863 Жыл бұрын

Wow thanks a lot for this.

@voiceforthevoicelesstruth5480 8 ай бұрын

Thank you man helped alot

@fooch00fhan1 Жыл бұрын

My gauges have a copper fitting in the middle where the yellow line holds up? Is that supposed to be open or closed?

@dangerdoberman Ай бұрын

Whoa. That's really great.

@wxmdragonz Жыл бұрын

So helpful thanks! We are struggling though because the hose going from our vacuum pump won’t fit the unit. It’s an LG DC12RK UL2 - R32 gas. Any ideas?

@KingCorduroy Жыл бұрын

Me too. It's specific to R410a refrigerant gas. That's why you must buy the 5/16 female swivel adaptor in his link to Amazon.

@OthmanAlikhan 2 жыл бұрын

Thanks for the video =)

@702goat 2 жыл бұрын

I have a question I’ve installed mini splits I bought the Yellow Jacket 19173 5/16" Female Quick Couplers x 1/4" Male Flare adapter for my yellow jacket 1/4 HVAC hoses my question is when you break the vacuum after releasing the refrigerant from the mini split condenser into the line set when I go to remove my suction line hose from the suction line service port on the mini split a lot of refrigerant comes out squirting , what adapter do you use for mini splits for your HVAC hose to connect to mini split 5/16 service port

@HVAC_Mechanic 2 жыл бұрын

A 5/16 Female, 1/4 Male adapter is used for a mini split. The link is in the description.

@Fritsvrolijk 2 жыл бұрын

Thanks Pro whil this pomp do the r32 coolant

@wallacechannel8532 5 ай бұрын

Very helpful thx

@bsd3662 Жыл бұрын

new mini split lost all refrigerant when i vacuum the line set do i leave the values to compresser open or closed ?

@jumpinghighest Жыл бұрын

Great video. Are you on the low or the high side? Thank you!

@MichaelThyben 2 ай бұрын

Thank you so much.

@robdurham6745 11 ай бұрын

When looking up this guahe set on Amazon, it looks like it now has the adaptor included or am I seeing that wrong?

@gerarddumont199 11 ай бұрын

Is there a leak if the blue gauge moved fractionally to the left when I first turned off the pump but then stayed at the same position for over 2 hours?

@LetstalkaboutitwiththeLees Жыл бұрын

Thank you .. Godbless you Sir

@haiyanqu698 2 жыл бұрын

Thanks for showing "De minimis release", never heard of that. I am wondering if you should read the gauge before you remove it from service port? So you know if the mini split hold full refrigerant. Thanks.

@tomhanwayescape Жыл бұрын

definitely! otherwise you won't know if it came fully charged. I had two new ones come low on charge.

@realiouslytv1711 14 күн бұрын

Thank you

@progressivesocrates2838 Жыл бұрын

Thanks for this video, very clear better than those other ones. I do have a question if you could answer it at your convenience. I have my mini split, I vacuumed the lines and released the refrigerant to the lines, however, I never check for leaks (pressurized it), and all the refrigerant leaked. I found the leak n I will seal. So, my question is, what is the order to refill the whole system? Do I vacuum the pipes only or the whole system first, ( how long approximately should I do it? , once I vaccum, second, should I pressure it? Or should pressurized first and then vacuum? and then last step refill the system?... once I'm refilling the refrigerant back into the system should the system be running? thanks

@HVAC_Mechanic Жыл бұрын

Pressurizing the system is a test for leaks which may be a good idea if you think there is still a leak. After the leak is fixed, the unit is vacuumed down, then refrigerant is added by weight. The amount the unit holds will be labeled on the outside condenser. Here is a video I made describing the process. kzfaq.info/get/bejne/gth9hLJ_p7Cul3k.html

@kuzik2525 6 ай бұрын

If it’s a multi zone mini split. Do you just do the same for each line. Or just on the main line.

@jawharris Жыл бұрын

Is it a good practice to Nylog your caps?

@rsauder 2 жыл бұрын

I'm confused by the hoses that come with these kits. One one end is a shrader valve (inside) the other does not have any valve. if you have the end with the valve going to the manifold , does this valve pass through the air or is it closed until 'depressed'. Some vids show one end going to the compressor unit/ other vids show the ends interchanged....

@10bbremer Жыл бұрын

None of the 20 or so DIY videos I have watched, including this one, explain this. They also do not explain the need for an R410a adaptor that does not come with the vacuum pumps even though they all claim to be R410a compatible which they are not without this particular adaptor. The valve ends connect to the service port. All the DIY videos I have watched on any subject leave out crucial details.

@arishem555 Жыл бұрын

watched multiple videos and some folks are using core removal tool. Why do they do it? Is it because to save that little "sip" of air when you are unscrewing it?

@rsauder 2 жыл бұрын

The low side on my compressor unit (also a Senville) has a shreader valve in it. The 'adapter' you installed does not have a valve depressor in it by the looks of it...shouldn't it?

@HVAC_Mechanic 2 жыл бұрын

The video may not show it well, but it does depress the valve when it is screwed onto the low-side port. It uses an adapter. The link is on the description, which has more images of it.

@sjsmith801 Жыл бұрын

So if you have a multi zone mini split, do you draw down each zone, each line set, separately? Or will vacuum on one line set draw down all of them?

@HVAC_Mechanic Жыл бұрын

Most multi-zone units are the same since they all tie into one outside condenser. The only difference is that usually, it takes longer to pull a vacuum. Be sure to read the manual for the unit.

@Needtoknow208 2 жыл бұрын

when you hooked the blue line up, how did you know which side to put it on? Are they color coded also?

@HVAC_Mechanic 2 жыл бұрын

The blue hose goes to the low-pressure side (big line); on a mini split, it is usually the only valve.

@sylviaisgod6947 Жыл бұрын

So how does vacuuming remove contaminants that are stuck to the inside of the tubing? I see that Pioneer sells a can that you attach instead of a vacuum pump, and it releases something that cleans the tubing and displaces moisture, and also pressurizes the lines so your can check for leaks, no vacuum pump required. Don't know if that's any better than the old fashioned vacuuming, but it's an option

@HVAC_Mechanic Жыл бұрын

Line set flushing is common, and many HVAC techs will do this, but I wouldn’t recommend it. Vacuuming down the system is a long-tested method that works well, but both methods work.

@michaeltemple8333 2 жыл бұрын

How did you get the schraider valve on the fitting on the unit to open using that adapter? It looks like all you did was vac the line on the gauges as the fitting on the unit is still sealed since the fitting you connected doesn’t open the schraider valve?

@HVAC_Mechanic 2 жыл бұрын

It is a mini split 5/16" to 1/4" adapter. It simply screws on and off. The adapter link is in the description.

@danieltruong719 Жыл бұрын

This is the second video that I watched and I get how to put the system under vacuum. Yes, the hex nut releases into the system. At what point do you charge the refrigerant into the system???

@HVAC_Mechanic Жыл бұрын

Once the refrigerant is released the system is charged.

@roberttownsend7064 Жыл бұрын

So, do all mini splits come with freon pre-pressurized inside the condenser? If so, I suppose it is enough to fill lines of manufacturers recommended maximum length..?

@HVAC_Mechanic Жыл бұрын

They usually contain the refrigerant and take into account a 12-16 ft line set. If the line set is longer more refrigerant is usually added. Be sure to read the units information.

@benremax1850 7 ай бұрын

what is the pump brand and cfm and that comes with the adapter needed and oil for 22000 btu mini split heat pump 230v costway

@pf_n1ps Жыл бұрын

Nice video TNX. Question: if there are no leaks shouldn't the gauge remain unchanged indefinitely assuming good gauges and hoses?

@pf_n1ps Жыл бұрын

Its because of the flare connections in that slow leaks are not uncommon with them. Do you pressure test first?

@jeffersonwilliams8757 Ай бұрын

i didn’t know Matt Walsh was installing HVAC on the side

@SteveP116 10 ай бұрын

Thank you! I got down to vacuuming and could not finish.

@Quagmire88 2 жыл бұрын

I have a vacuum pump from other projects but don't have the T-fitting you have screwed into it. What is it called? I need to order one in order to vacuum my new pioneer minisplit.

@HVAC_Mechanic 2 жыл бұрын

It is a 5/16" to 1/4" Adapter. A link is in the description.

@greggv8 Жыл бұрын

How does a DIY installer find a tiny leak without a nitrogen pressurizing setup? I used Nylog blue on the fittings, made sure the vacuum hoses are clean and tight, got a brand new vacuum pump too. It pulls down almost to -30 but no farther and when I close the valve and turn off the pump, in about 30 minutes it's back to 0.

@HVAC_Mechanic Жыл бұрын

Usually, the leaks are at the flares, but the line-set will need to be pressurized and tested with soapy water. If you do not have Nitrogen, a low-cost KWIK-E-VAC Line Set Flushing Kit can be used to pressurize the line. Here is a link: amzn.to/3AKpE3u

@Greg-me8le Жыл бұрын

Question: With a cinder block garage with rebar every 4 ft (hurricane code), could you run the line set out of the top of the air handler over the cinder block then down the outside of the wall? Or is that too many 90 degree bends at the top? Also, the drain tube probably should run out and down and not up??? I ask because it looks like some HVAC pros installed this way on other houses by the look of the channel coming down from the soffits.

@HVAC_Mechanic Жыл бұрын

Yes, the line set can be run that way. Keep in mind most units are filled with refrigerant for a 16-foot line set; If more of a run in needed, the unit would need to match this. To drain water up, condensate pumps are used, mainly in basements, but they can be used in any location that needs them. Here is a link: www.hvachowto.com/our-picks-for-the-best-mini-split-condensate-pumps/

@cmichaelhoover8432 Жыл бұрын

Or you can do what I did. Run the core drill into rebar! 😥 hammer and chisel moved the hole a half inch to one side and spray foam filled the gaps, so it worked out in the end.

@troydefond2307 Жыл бұрын

what a/c guages are those? definitely can't find the one's in ur video with the links you provided.

@HVAC_Mechanic Жыл бұрын

Thery are just low-cost Zeny gauges. I checked the links, and they are working for me.

@tazz347 5 ай бұрын

legend 👌

@Gradybravo 13 күн бұрын

Where did you get the 5/16 adapter?

@pedromiranda2711 11 ай бұрын

What if I'm adding the refrigerant? What is the procedure for that?

@OpticalReward 9 ай бұрын

On the Daikin 4mxs outdoor condenser, it has a liquid line and gas port service valve. I assume you're only required to vacuum down the gas port? Everyone of these videos only shows a mini split with one service port, but some units have two service ports (each line).

@HVAC_Mechanic 9 ай бұрын

Units larger than 1 ton often have ports on high-pressure and low-pressure lines. When setting it in a vacuum, only the Low-Pressure big line is used.

@walter2670 4 ай бұрын

Thanks* for showing the disconnecting of the blue line.

@toders211 21 күн бұрын

Hello, I had a question, I vacuumed down my mini split according to your video and it held for an hour at -30microns. Then I released the the high pressure valve and the low pressure valve shot up on the gauge accompanied by a squeal. I discovered a small leak at that connection point with the soap. I fixed the leak but don't know what to do next. Am I ok to do the electrical and run it? Or do I have to do a pump down. Thx for the great videos.

@HVAC_Mechanic 21 күн бұрын

If the leak is fixed and the unit is working, then it is likely good. If it is still leaking, then it would need to be pumped down and refrigerant placed back into the outside unit while it is fixed.

@diysolaradventures7894 Жыл бұрын

How do you put pressure back in the lines if you think you lost it all would that keep the outside compressor from running because mine's is running very slow it's not producing no heat there are no leaks it seems like my compressor is really not creating no pressure in the lines there's nothing in them when I checked them

@HVAC_Mechanic Жыл бұрын

Did you release the refrigerant from inside the outdoor unit? If there is a leak and refrigerant escaped, more will need to be bought and added back in with a weight scale.

@diysolaradventures7894 Жыл бұрын

@HVAC Mechanic no refrigerant leaked out at all I pumped down the system yesterday by closing the one line and allowing the refrigerant to return to the compressor because I needed to disconnect it now I did make one mistake once I reconnect everything I opened the valve releasing the refrigerant back into the lions and car myself bleeding out the air but it hasn't worked since