How to charge mini split yourself, DIY 410a refrigerant, save money!

[@barryl8491]

What a simple, straight forward video. Spent 30 min searching around and countless videos to just confuse me untill i came upon this one. Thx!

[@SaveGreenHere]

Thank you!

[@Freedom_Aint_Comfort]

Thank you so much for your video I tried it on my Senville two air handler mini split. Aura model 18000btu. It worked like a charm but only after the third try. I must stress to everyone please bleed the lines. Make sure the air conditioner is running when you’re hitting this psi Mark. Again bleed the lines, bleed the lines on the gauges. If you ever have trouble DM me. I can explain to you in detail what I did. I don’t make KZbin videos much at all. My leaks were s result of loose connections. All my refrigerant leaked out so I charged it from empty. Lord bless.

[@SaveGreenHere]

Great share, yes, very important, it was done prior, but also ensure you fix the loose connections BEFORE adding!

[@patrickpham1704]

Paper wadder: Please show me how to bleed the line. Thank you

[@mrgoggles1963]

Multizone senville minisplit. Had a leak and will be removing all the remaining (likely very little left in the system). Removing it by using an evacuation pump into a separate cylinder. This will remove 410A from the compressor as well all line sets. Note: This multizone system has a manifold with a set of “king valves” at the top of it. One king valve for the vapour line and one king valve for the liquid line. The vapour line king valve has a 5/16” port on it. These king valves are the separation from the compressor behind the manifold and the rest of the system. Lower on that manifold are the line sets and each line set zone has“service valves” that when opened, allow flow thru to each connected line set. So, the king valves AND the service valves are open during the evacuation step noted above. After that, pressure test with nitrogen and locate /repair any leaks. Vacuum test down to 200 microns and confirm it holds it there. At that point, the system is tight and ready for fresh unused 410A to be added. My system factory charge calls for just under 6 pounds, according to the label on the side of the unit. My question is…do I close the king valves and add into one of the line set’s suction port as it is weighed in…and will the line sets hold all the 6 pounds of 410A, then open the king valves which then the 410A will make it to the compressor and I then start the unit up to circulate all thru? The last step and if the king valves should be open or closed during all the steps is what I am unclear about. Very much appreciate if you can enlighten me on this. Thank you…

[@harveymyers6391]

@@SaveGreenHereIf I missed this I am sorry, but if you are just adding refrigerant you leave the unit running? If you are vacuum the lines you turn it off? If you turn it off do you add any before you turn it on to refill?

[@djchiesa3567]

I am grateful for these videos. I'm a widow in N.Ca. and the contractors are constantly trying to gouge me. For a single ductless minisplit (21-24seer 18-21 btu) unit I've been quoted 6000-10,000. Costco has a mrcool 21seer/18but for $1,500 now I need to get a friend to help me install. I already had the electrician (his bid for a lot of work was 3.8K where most bids are at 7-10K for electrical work) install the 240/40amp circuit & outlet.

[@SaveGreenHere]

Even electrical seems high.

[@DEtchells]

IMPORTANT NOTE: You need to purge a little refrigerant through the hose connected to the refrigerant tank *before* connecting to your gauges. You do *not* want to get any air into the system! If you don’t purge the hose, you’ll inject all the air in it into the system.

[@SaveGreenHere]

Yes Dave, that is mentioned on the video description, but thanks for the reminder for everyone.

[@williamwintemberg]

True

[@messiahmindset2964]

Not able to find refrigerant like that for sale online anymore.

[@LongTrout]

Save money... love this video.... best thing to ever happen for many split companies and HV AC contractors. Keep up the good work.

[@SaveGreenHere]

Thanks 👍

[@stanleyzwerneman5152]

I appreciate your expertise....but is the unit running when you are charging the system?Thanks!

[@SaveGreenHere]

It should be running in cooling mode.

[@themongooser7199]

Thank you for the video. My 410a was delivered today and I just got done recharging my 24k BTU Mr Cool. PSI was at 75 and wouldn’t get my garage below 80. It was basically blowing warm air. Turned the AC to 73 and went outside to recharge it. Took about 5 min, As soon as I walked into the garage I could feel the cold air again.. Since I installed the split system myself I had all the tools already. $75 for a bottle of 410a is way better than $500 for a service tech to do it.

[@SaveGreenHere]

AWESOME! Glad you got it, and glad you are cooling now!

[@doddgarger6806]

Fix the leak!

[@carpetgeniepsl]

Thankyou. After looking at many videos, your was the best for my family. Saved 300

[@SaveGreenHere]

Great to hear!

[@Captfuntastic]

Thank you for posting this. I have 2 mini splits that need recharge every 2 years that costs me close to $500 each time I call a service tech. I got everything for less than $200 and should last me 10 years

[@SaveGreenHere]

Glad to help. However, you may have a really small, slow leak if you need recharge every two years, and should try to find out where the source is. It may be at the ends. Try this, it works extremely well, and use it when you have to add refrigerant again, and you may never have to add refrigerant, as it's a closed loop system.... amzn.to/3edDJsX

[@Captfuntastic]

SaveGreenHere techs have checked everything and even new line sets and pressure test. They told me (2 different companies) that the flare fittings are what leaks and are a poor design. I loved these ductless units in the beginning but I would never do this again and cannot recommend them anymore.

[@SaveGreenHere]

@@Captfuntastic You need to use this. Otherwise, you are asking for it...... amzn.to/33zQLz6

[@Captfuntastic]

SaveGreenHere tried that already

[@cengeb]

@@Captfuntastic Flares made right don't leak, mini splits are great, a good flare tool matters too

[@michael931]

Does the 117-120 sweet spot vary at all with ambient temp? Also, can the resting (off) pressure be used.as any sort of indication?

[@ShannonRawls]

Thanks for giving us the game!

[@SaveGreenHere]

Your welcome!

[@Fab24hdumans]

Do I need to have my AC running? Sorry if it’s a stupid question..

[@SaveGreenHere]

Yes it needs to be running. Not a stupid question at all.

[@charosenz]

Thank you for making this. It would have been good for you to talk about purging the lines before adding R410A.

[@SaveGreenHere]

We did.You can see it here.... kzbin.info/www/bejne/iJ_HnXZvnJp7sLM

[@charosenz]

@@SaveGreenHere Thank you!!!!

[@sierrasurvivor1798]

One other question. When beginning to add the refrigerant, should both high and low pressure valves on the outside unit of the minisplit be wide open?

[@prenticelennon3087]

Thank you Thank You THANK YOU!!! We are having heat wave in LA and my house was so hot and now it's cooling down!! My dogs thank you too!

[@SaveGreenHere]

Glad it helped!

[@georges2569]

On the yellow hose at the gauges don’t remove that hose just slightly open it up till you see the Freon coming out then just simply tighten it up and then proceed on what he’s describing you need to get the contaminated air out of your hoses first

[@SaveGreenHere]

Correct. A split second is enough until you see refrigerant come out, so you can purge it.

[@stevecha3612]

Any recommendations if the unit has 5 line sets (5 units inside the building that are controlled by the one outdoor unit). Would you have all the indoor units running and is there a specific port to use for filling since there are 5 line sets?

[@jamesjuhcomery9291]

How to bleed the refrigerant line before you add it back to the condenser?

[@Henryse]

Sweet! our system is revived, because of your video. Thank you!

[@SaveGreenHere]

Great to hear!

[@mrgoggles1963]

Great video 👍 My multizone minisplit lost most of its 410A. Repaired the leak and will fully evacuate what may be left in the entire system including the compressor. Pressure test with nitrogen/ then vacuum down to 200 microns and hold/ once that is done, I will add just under 6 pou ds of fresh 410A via one of the line sets. Question: Do the king valves (these are not the line set service valves but are at the top of the multiple zone manifold) need to be closed and then opened only after the line sets have taken the 6 pounds or are the to be open while adding? Not sure if the two line sets (less than 50’) can hold all the 410A. At what point is the system turned on? I dont think it should be running while initially no 410 is in the lines.

[@billyhsat]

You didn't talk about purging the system that I could find. How do you do that?

[@SaveGreenHere]

kzbin.info/www/bejne/iJ_HnXZvnJp7sLM

[@SaveGreenHere]

MAKE SURE YOU WEAR GLOVES....amzn.to/3fxiF1u AND SAFETY GLASSES..... amzn.to/3fuqFjv Remember to purge the yellow line, BEFORE you open the blue valve. So after attaching refrigerant jug, open the valve on the jug. Then press the schrader valve ( the pin that shows on th center of the manifold) with a small screwdriver for a split second, and allow just enough refrigerant out till you hear a split second pssst! We did this just before we started the filming, but did not catch in on the video.

[@PhiNguyen-pc9qg]

Thanks for the video. Do you know if the procedure differs when you have more than one zone?

[@crennie6928]

Thanks for the informative video. Just have a question about any possible air in the system or line when you attach the canister to the unit. Is there anything or any way to bleed out the slight amount of air that is in the line/hose before the refrigerant is added? Thanks!

[@SaveGreenHere]

Put ball valves on, like these.... amzn.to/2Q0jO81

[@crennie6928]

@@SaveGreenHere I have not seen those, but that seems like a great way to do it. Thanks!

[@SaveGreenHere]

Purging........ On the yellow hose, 1-connect to tank, and gauges. Slowly open the valve on the REFRIGERANT tank as to slowly release some refrigerant 2-On the gauges, slowly unscrew yellow hose at manifold until you hear air out, should just take a second. Quickly tighten. On the blue (suction) hose, 1-Fully tighten hose on the HVAC unit, and on the gauges. 2-Slowly loosen connection on manifold, the remnants of air in the line will bleed out at the connection to the gauges, (you will hear the sound of air coming out) at the manifold connection, and you can quickly tighten immediately after. It is a split second thing!

[@ovm4133]

SaveGreenHere oh ok thank you so much for the info am gonna do that today 🙏🏼

[@SaveGreenHere]

You should be fine!

[@Maxima7380]

@@SaveGreenHere , do you have a video on how to get the R410A out of a wall unit and into the compressor so that I can replace the wall unit?

[@shanefrank3281]

I thought with inverter systems the fan speeds, compressor speed and metering device are constantly changing so you weren't able to tell the state of charge by just looking at the pressure (or the superheat and subcooling) like you can with a single speed system.

[@spazzman90]

You are correct. I'm not sure he mentioned this being an inverter system. That being said, I'm installing a couple of inverter systems. I forgot I wanted to check pressure running at full speed. I will do that when I'm finished installing the second system.

[@alohadoc1]

I watched the purge line procedecure, and read below that you are running the mini split while you are charging it.

[@SaveGreenHere]

Yes, while charging, you must run in COOL MODE. Purge the lines BEFORE charging.

[@deanroadifer6013]

If you go to the support section from the manufacturer of you mini split they will send you a chart showing the proper PSI needed according to the temperature outside and the temperature inside. This will be more accurate.

[@SaveGreenHere]

Thanks for the info Dean!

[@williamwintemberg]

For the occasional DIYer: A Safety Note: Wear gloves, a long sleeve shirt and a faceshield when connecting and disconnecting the lines. This stuff gets cold and can cause frostbite or loss of an eye.

[@SaveGreenHere]

Yes! Gloves: amzn.to/3Rfg5SL Faceshield: amzn.to/3VATnaC

[@johnkillborn8955]

If it's a 2 zone system do you add refrigerant to both ports or just one. Does a 2 zone share refrigerant or does each zone have their own?

[@tomjong4141]

Turn both zone on to the lowest temp highest fan and charge from any port or port A if it has a mark.

[@SaveGreenHere]

Make sure you are in cooling mode when following the tips from Tom Jong

[@reggaevybzradio1]

was the unit running when you were charging it. also my manufacturer said the static pressure should be at around 200psi so would the 117 still apply for mine

[@SaveGreenHere]

Unit has to be running.

[@arodandjeter1]

Static pressure has nothing to do with refrigerant. 200psi Is wayyyyyy too much

[@allach1772]

@@arodandjeter1 even when unit is off ?

[@ethanpn2003]

Thank you. Does it do the same to multi zones ?

[@owenz3831]

Thanks for the tutorial! The AC guy told me that the freon is 1-2 lbs lower than normal two weeks ago. I followed your instruction and made sure all the hoses were securely connected. However, the gauge shows a low side pressure of 0 (the AC is running fine). But it stayed at 210 psi when I release the refrigerant into the unit (is it the tank's pressure?) Do I need to open the service value to get the pressure readings?

[@wasimedoo7994]

Very good information what size of AC you put the Freon in and what was the in temp

[@SaveGreenHere]

That was a 9000 BTU system and the temp was around 100 degrees in the Summer.

[@Apple23]

Do I do this while the mini split is running? Or off. Do I close the coolant line from the outdoor unit to the indoor unit?

[@SaveGreenHere]

Do this running in COOLING mode.

[@MyJeremy79]

Will my mini split go in to cool mode for charging in winter time. Its low 40s here

[@Gripmagic]

There is usually an emergency function button somewhere on the interior unit that will allow you to turn on the AC even in cold weather

[@Apollo_Music]

My two pounder ran out during the fill. It read zero and got it up to 105. It's working but I might have a leak

[@SaveGreenHere]

Get this.... amzn.to/3VoUy9N and see the video on how to use it here.... kzbin.info/www/bejne/noLNgJuNoKygg5Y

[@davidbyer4558]

Please bare with me as Im not a HVAC tech. Here goes. I just purchased a LG 22000 btu 1 zone mini split system. The unit comes pre-charged for a 25 foot line set, but I need a 35 foot line set to reach my living room,so I purchased one.. I believe after watching your 2 videos I would do this.....1) Install the system with the 35 foot line set. 2) Vacuum out the line set down to -30psi , wait a while and check for pressure leaks. If there are no leaks, my next step 3) would be to release the R410A which came pre-charged in the unit into the system. 4) Then I would check the pressure in the line set with the vacuum gauge to see what the psi is and then add as much R410A..... which I would have to purchase separately, to get it to between 117psi and 120psi.. Im pretty sure there is no need to purge the system. Does this procedure sound correct....thanks PS the manual says to add 0.38 oz/ft. So that should be about 3.80 lbs.

[@SaveGreenHere]

Yes, sounds like you should be fine. It will be very critical, to use the sealer, amzn.to/367xEf2 to ensure no leaks at the connections. Hope you have your refrigerant already. Ebay seems to still have it, but there's an industry push to eliminate sales on the web. You can get 11 pounds for $107 delivered to your door, and that's not bad considering retail market prices.... rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&pub=5575339965&toolid=10001&campid=5338199104&customid=&mpre=https%3A%2F%2Fwww.ebay.com%2Fitm%2FR410a-R-410a-R-410a-Refrigerant-11lb-tank-New-Factory-Sealed%2F202661144956%3Fhash%3Ditem2f2f8ba97c%253Ag%253Au0YAAOSwz4Zc%257Er2V%253Asc%253AFedExHomeDelivery%252133990%2521US%2521-1%26LH_BIN%3D1

[@WilliamBurke-l4j]

Does the min split need to be running to add the refrigerant. Mine is empty do to a leak.

[@SaveGreenHere]

Yes, it needs to be running, and in COOLING mode.

[@PTHPHX]

​@@SaveGreenHereShould inverter be set-up and run on 100% speed and 60 fahrenheit? Thanks for the video, very informative 👍

[@mlwee6796]

Thsnks for showing how to open and close the valve. Can you make a video to show where the blue and yellow hose are connected.

[@SaveGreenHere]

Hey Mo! You are welcome! The other videos we uploaded cover that...... kzbin.info/www/bejne/iJ_HnXZvnJp7sLM and kzbin.info/www/bejne/mJDEqqZ7pbN_m9U

[@monkeyz20]

Is there a different set of instructions for doing this in cold weather? It's about 40° outside here. Thanks!

[@chrisford8403]

Same question. Can this be done in heating mode?

[@paxlepham]

Thank you for your refrigerant. I have ordered a 5 lb tank. My question is do we need to turn the A/C on while we charging.

[@SaveGreenHere]

Yes you do

[@paxlepham]

@@SaveGreenHere thank you so much. And another question, i have a problem with my liquid line that was leaked and lose all the refrigerant inside the hole. After that my inside unit has some noise. Hence i need to fix my liquid line and cleaning the liquid line of the insides unit. Could i pump down like the way you show on the other video and fix the liquid line?

[@fishycomics]

Thank you. a great Reference to doing things: I have the gauges adapter and 410A thanks to a friend. i have fujitsu AOU24RML1 4lb. Design pressure High side 450, low side 240 It has two 9KBTU units to one machine? I should add to 240 psi if I am LOW. I'll look for one with the same machine to help on. appreciate some advice

[@robertberin4872]

If you have removed all the refrigerant from the system than you should put back the specificfication weight of 410a.

[@infonator1]

Hello, Can you hook up directly the yellow line on to the 410a refigerant tank or do you need the on /off valve adapter? Thanks.

[@cackleberryfarm4598]

Thanks for these two videos!!! Unfortunately your eBay link for the refrigerate is no longer there 😞

[@SaveGreenHere]

Thanks!

[@deanmarsh2544]

Once you have opened valves with Allan wrench to release refrigerant into system, do those lines remain open? Do you ever close them?

[@spazzman90]

No, do not close. Closing will reseal the lines to the compressor and no refrigerant will flow.

[@deanmarsh2544]

@@spazzman90 Thanks

[@diysolaradventures7894]

What if you think your mini split is empty of freon and your compressor is barely running at all do I perform a pressure test and do I need to pull a vaccum before I add fresh refrigerant 12,000 btu Senville low presser no refrigerant

[@WorkingTimbersCo]

When disconnecting the blue line will I lose refrigerant?

[@lifegreats]

Hello, great video and would be easy to do here in the summer however it is winter right now. Can this process be used while the unit is running in heat mode? If so, what pressure should I look for when in heating mode. According to your video, the sweet spot is 117-120psi when running in cool mode.

[@SaveGreenHere]

Has to be on cool mode.

[@pc7082]

Does the unit need to be running while filling it ?

[@SaveGreenHere]

Yes, and in cooling mode

[@rj2764]

It is 6 degrees outside and I put my pump in cooling mode but the outdoor unit will not come on because it is too cold any suggestions?

[@richardday2893]

Hi buddy What's the sweet spot for R32 please?

[@CasaDelGato]

Failed recharge. sigh. I recently installed a new Senville 18K btu unit. Did a 1.5 hr vacuum test, no problem. Finished setup and started the system running. (note: It's winter!) It started heating just fine. Then I got a call and had to leave for six hours. Came back - and it wasn't heating anymore. Turned it off, and checked the Freon pressure. it was 0. Apparently the system developed a nasty leak somewhere. Since I had shortened the lineset (I only need about 20'), I assumed my flaring job wasn't good enough. Due to shipping snafus, I had a spare lineset (25'), so I just replaced my shortened one with a factory built one (and looped it). Since I had to wait for the Freon to arrive, I did a VERY LONG (4 day) vacuum test. It held vacuum. It's 36 deg F outside. Since there was no freon and I didn't want to run the compressor when empty, I did a slow fill to 100psi. Then powered up the system, and was able to fill it to 115psi. Wouldn't go higher. (freon too cold??) Yes, it's in Cooling mode - as I do have an alternate heat source in the house. Let it run for 15 minutes - no cooling, blower running inside, the fan on the outside unit is NOT running, but I can hear the compressor running. Pressure hasn't changed. Tried flipping it to Heat mode, and waited 15 minutes. No heating inside, inside blower running, outside fan and compressor running. No heat. Pressure hasn't changed. Gave up and shut it all down. Any suggestions?

[@CHS10901]

Did you open the valves from the compressor to the lines? Towards the beginning of the video, he said don't try and add refrigerant to these ports. Ask me why I know? Been there, done that. Once you have the lines all connected, take the caps off and open the valves on both the high and low, you should hear a hissing sound as the preloaded refrigerant goes from the compressor to the lines. Open the valves all the way until the stop and then see if you get the heating and cooling desired. This is somewhat off the top of my head recalling from a couple of years ago, but I think there was also set of a master valves on top of the individual ports on my unit as well, so you might want to check that as well.

[@balfome]

How do you add EasySeal Ultimate LS? Can you do a video on it?

[@ericboisselle1145]

Thanks!

[@SaveGreenHere]

No problem!

[@Captfuntastic]

Don’t you need to purge air out of the lines before you open the blue valve?

[@SaveGreenHere]

Yes and it was done. You can also see here on some steps. kzbin.info/www/bejne/iJ_HnXZvnJp7sLM You should also ensure there are zero leaks in your system. Because refrigerant is a closed loop system, not addressing a possible leak means you will be buying more refrigerant AGAIN in the future. Fix the leak, vacuum the lines, as shown here.... kzbin.info/www/bejne/mJDEqqZ7pbN_m9U If you have a leak on a mini split, 9 out of 10 times it will be on the connection. That's where this simple fix (with the system having no refrigerant) comes into play..... kzbin.info/www/bejne/noLNgJuNoKygg5Y

[@seboldtorno8767]

Ok thank you

[@TheRPhelps24]

I was wondering the same thing. It wasn't covered on the video it seems.

[@timthoms784]

i have just bought a mini split but the unit has only enough refrigerant for a 25 foot line and i need 50 feet of line set so how much r410a would i need and would the procedure be the same as you have shown?

[@SaveGreenHere]

Get this 7.5 pound jug, it will be more than enough...... amzn.to/36szXYQ

[@arodandjeter1]

Read the manual

[@notwhoyouthink666]

Do you need to evacuate somehow from those hoses?

[@SaveGreenHere]

Yes, for one split second bleed out any air on the hoses.

[@hangsu5724]

Thanks a lot for your video. It is really helpful. I have a R410A refrigerant FUJITSU minisplit with model AOU24RLXFZ. In the label, it said design pressure high side:450psi low side:240 psi. It looks the lower sider PSI is pretty much higher than your normal 120 psi. Currently, my low side pressure is 125 PSI and AC is not cool enough. Does it mean I need to add more refrigerant to achieve 240 PSI on lower side?

[@AlekseySmolenchuk]

Same question, I'm seeing Hi 550 PSIG and Lo 340 PSIG on a Senville 09CD

[@jimcroft1387]

@@AlekseySmolenchuk Those are test pressures.

[@wiboater4]

your doing this with the unit running in cooling right?

[@tsluiter4]

it must be running in a full cool mode. not auto, not anything else. you want to be maximizing the cooling ability of the machine. some units have a charging mode that ensures this for you. some dont. but yes, on and on max ac/charging mode.

[@SaveGreenHere]

Correct!

[@SaveGreenHere]

Yes!

[@ricknieto175]

When charging the mini split or adding freon does it need to be running or off???

[@SaveGreenHere]

Running. And on cooling mode.

[@matthewnovik4050]

will low refrigerant cause the heat function not to work and blow hot? or just the ac function to not blow cold?

[@SaveGreenHere]

Low refrigerant will not get you cold air in the summer time on cooling mode.

[@davesdetailing]

It won't work on heating either. These are a heat pump, they essentially move heat, just depends on which way they move it as to heating or cooling. Either way, low refrigerant will cause it to not work, or either mode.

[@Marcc93]

Would you add the refrigerant while the mini split is on?

[@SaveGreenHere]

Yes, and in cooling mode.

[@invisiblestacker]

I notice you are not loading refrigerant by the pound but by psi. How do you determine the pressure needed. I will be dyi installing a mini split but need a 35 ft line and will have to add refrigeratorant.

[@SaveGreenHere]

The model on the video was a small 9000 BTU unit, needing the EXACT refrigerant on the tiny refrigerant tank, and the system lost ALL the refrigerant, so no need to weigh it because the small tank had the EXACT amount of refrigerant that the system required. If that is NOT the case, you need to use this to get your exact numbers....... amzn.to/3WhSWme Hope this helps!

[@archer9732]

Contact customer service for your system. These systems are designed for DIY and the customer service people know this and are extremely helpful.

[@michael931]

For new install, do you put any in initially before running it or just run it dry first, then add the refrigerant?

[@HapaHeritage]

They make a scale and purge cans. Pioneer Mini splits is a great website to obtain the purge can and they have a video for it. Once the purge is complete, a scale is required to measured the additional amount to add. That would be the easiest way to do it without buying a vacuum pump and micron gauge. Last video I seen was 2oz for every foot but each brand is different and surprisingly quick to help if you ask them the required amount. Do more research.

[@TrGuzeli87]

Is the samething you use for heat? My heat is not working.

[@SaveGreenHere]

Yes, if it's a heat pump. You may have low refrigerant, or reversing valve issue.

[@AlphaEntInc]

Thank you for the refrigerant link. I will have all the supplies I need to get this done. QUESTION: When beginning to add the refrigerant, should both high and low pressure valves on the outside unit of the mini split be wide open? What about when doing a back pressure test with Nitrogen. Are they open or closed? I don't want to mess up the compressor or anything by accidentally shooting nitrogen in there if its not supposed to be. Thank you for all your help. Watched the ads for your channels ad revenue. Will be watching more of your mini split electrical wiring videos tomorrow.

[@bkhoavo]

You're not ready for this bro.

[@newpass9434211]

question, when your releasing the freon in increments..the 2 valves on the condenser..should they be open or close?..if you can please clarify.i appreciated. am just confused, because when your doing a vacuum to your system to make sure there ar no leaks, your suppose to have the valves closed, and then after open the 2nd valve for 5 seconds and close it again, and then remove the vacuum, and then you open both valves again..so for charging the unit, do they have to be open or close...thanks

[@SaveGreenHere]

When we did this, there was no refrigerant on the system, and it was vacuumed. We did another video on the vacuum process here on our KZbin channel. Always best to use a scale as well. In this video, the tube of refrigerant was within an ounce of the total refrigerant the mini split label indicated for the system.

[@TimSchumacher404]

Can you use this product to partially recharge a 3 ton split system? If so, could you do a video for a 3 ton in the future, please.

[@SaveGreenHere]

Yes you can. best way is to see on the label the pounds of refrigerant needed, and weigh the refrigerant cannister before starting to fill. For example, if the cannister weights 25 pounds, and you are a pound short, when the cannister drops to 24 pounds, you're good. The adding should be done incrementally, every 10-15 minutes. Here is a scale that helps...... amzn.to/3aY47Lh

[@ShadowMasta]

@@SaveGreenHere I have a DIY MrCool 3 ton mini split. Instead of weighing the r410a tank to charge the desire amount, can I just charged like how you did here to 117-120 psi if my psi falls under that. Thanks

[@SaveGreenHere]

Duke, your best bet is to always weigh it. The reason I did not weigh on the video is because the unit was completely empty, as it leaked completely, and it needed 1.4 oz, and we purchased this 1.44 oz container..... ebay.us/HKUnC3 So that made everything easy. You still need to vacuum properly, and we show that here..... studio.kzbin.infob_aysEpNLes/edit But if you have a large refrigerant tank, you are better off getting a scale and weigh the refrigerant according to what the label indicates it needs. Here is the one we use....... amzn.to/3QXCoea

[@lardo5150]

YES THank you! Getting ready to do this. Did you do anything with the valves? Did you turn them off or you just hook it up and ahve it running to add the juice? Talking about the valves you turn to release the refrigerant into the system.

[@dew117]

Thank you for for sharing . The best practice for mini split is to start from zero ... Pull the vacuum and add refrigerant by weight. Anyway, I also top up my 9000 BTU gree inverter.. During topping up, I keep monitoring psi on the gauge, current from the clamp meter , temperature on suction line , temperature from supply vs return air on evap unit. I turn my ac to turbo mode or max cool... run for a while ...and adding refrigerant... My sweet spot Gauge psi.. 125-130 Current getting close to RLA (it is ok for mini split to ramp up to RLA on turbo mode... We are not gonna keep using turbo mode all the time in real life, right?... The current will go down when on normal operation. Super-Heat keeps fluctuating in the range of 5 +-3, which is normal Delta T or return air temp minus supply air temp on the evap indoor unit is between 15-20 degreeF

[@SaveGreenHere]

Thank you for sharing!

[@jasonrundle8065]

Is that 120 psi sweet spot the same on all mini splits? Or does that change depending on the size of the unit?

[@SaveGreenHere]

Depends on the size of the mini split. I was for that one on the video, but you should see the label, and see how many pounds it needs. Then, with a scale, weigh the full tank of refrigerant, (assuming your system is totally empty) and go from there. Example: You need 1.5 pounds. You buy a tank of 410a that weighs 35 pounds on the scale. You slowly add to the mini split system until the tank loses 1,5 pounds, and now weighs 33.5 pounds. Here is the scale for refrigerant..... amzn.to/3acJ0nQ

[@kamakaziozzie3038]

@@SaveGreenHere so just to clarify because I’m planning on doing this myself on a 4 zone 30K BTU system. Will I be filling strictly using weight of the R-410? If so, do I still pay attention to the PSI reading

[@dew117]

The best practice for mini split is to start from zero ... Pull the vacuum and add refrigerant by weight. Anyway, I top up my 9000 BTU gree inverter.. During topping up, I keep monitoring psi on the gauge, current from clamp meter , temperature on suction line , temperature from supply vs return air on evap unit. I turn my ac to turbo mode or max cool... run for a while ...and adding refrigerant... My sweet spot Gauge psi.. 125-130 Current getting close to RLA (it is ok for mini split to ramp up to RLA on turbo mode... We are not gonna keep using turbo mode all the time in real life, right... The current will go down when on normal operation) Super heat keep fluctuating in the range of 5 +-3, which is normal Delta T or return air temp minus supply air temp on the evap indoor unit is between 15-20 degreeF

[@doccotter]

Hi, I installed a new 2 zone Lg Mini Split. Getting error code 35 for low pressure after running for a few minutes. I Hooked up the gauges and added only a little 410a. When the fan is running the pressure is at 120 and when the fan stops the pressure is at 68. I’m still getting the CH 35 error code for low pressure when running the unit. The pressure doesn’t seem to be changing. Any advice? Thank you

[@SaveGreenHere]

CH35 means you are seeing the low pressure sensor error. This error can be caused by any of the following causes: Overload operation (outdoor fan constraint, screened, blocked) Refrigerant leakage (insufficient) Bad connection of the pressure sensor Bad compressor sensor Bad PCBA You should check for any leakage, or if there are any blockages on the unit. If you are still not able to fix it, we recommend a local contractor to have it diagnosed. lghvac.com/professional-locators/contractor-locator/.

[@mikeomax8101]

Any idea what a PSI should be when running heat with 50 degrees weather outside?

[@salletimbaci9592]

Hi for a r410 cylinder or bottle, should i turn it upside down when charging the unit or should it be sitting upright...? Am also intrested on how u actually open n close the valve for charging till it hits 120psi... any tricks or secret? Mean can u show us how u actually did open & close the valve frm 100psi till you reachef 120psi...thnks

[@SaveGreenHere]

Turn it upside down, open and close slowly in small increments.

[@salletimbaci9592]

@@SaveGreenHere ok thnkyou...

[@ericw7381]

I just purchased a new mini-split system and following your advice bought the refrigerant from eBay (3 days to deliver!!) and the gauges you recommended from Amazon. My question is... since this is a new unit and has never been charged with refrigerant do I need the vacuum pump?

[@rdewitt3468]

Yes

[@warham4155]

new unit should have come charged.

[@tosawisaddler5173]

Does the compressor need to be running while filling or adding refrigerant?

[@SaveGreenHere]

Yes, in COOLING mode.

[@1ndependenceday1]

Yes

[@shaz2878]

does the ac unit have to be on when adding refrigerant? thanks

[@SaveGreenHere]

Yes, on cooling mode.

[@shaz2878]

@@SaveGreenHere thank you

[@axelebermann3901]

I have a Climate Right mini split system. When I connect a gauge at the only access port the pressure gauge immediately tops out at over 200psi. Unfortunately this 5 year-old system seems to be discontinued, so this is a bit of a hail mary to get it working again. Any thoughts?

[@cipher6179]

Make sure the unit is running and then read the gauges. With the system off, it will be at a higher PSI.

[@HapaHeritage]

Yup, nobody says turn it on lol There’s another video out there saying shoot for 150psi. I plan to take mine to 120 and check temps then push it a lil higher to get it colder but I don’t want to break it, I just want it to work. The proper way to recharge a mini split is to recover the whole freon charge, to zero it out the refill it using a weight scale (the outdoor unit has a label listing the factory charge in grams) and using a different style freon-tank but that equipment alone cost a grand with the 5lb tank. This method is a patch job at best if the original issue was a leak; Pioneer mini split website sells a 410 tank with leak stop mixed in btw but it won’t fully recharge a 9k btu unit; it can only top it up. Good Luck👍 P.S. I think they have it ON in Cold mode.

[@andrewhicks211]

Does the unit have to be running ? And how do you hook up the hoses with out loosing freon

[@SaveGreenHere]

Needs to be running.

[@whtpwr]

My mini split came with refrigerant that I had to release with an allen wrench in the low side and high side. Should I close them before vacuuming and adding refrigerant or leave them open?

[@SaveGreenHere]

Pump the system down so the refrigerant is in the compressor, then fix any leaks.

[@whtpwr]

@@SaveGreenHere what happened was all the refrigerant escaped when the flares failed because of improper torque setting in the manual. Now that I have seen your video on how to install refrigerant, should I close the allen screws where I released the refrigerant during the install or leave them open while I put in the new replacement refrigerant?

[@Arturozubia]

Sorry to interrupt, so did you have to close or leave open the valves where you release the refrigerant..did they answer your question, I have same problem

[@ericlebar7035]

Hi i have a toshiba eco902sqn eco air split unit system we tried to refill but could not to find the port to connect the refill gas to have you any ideas where it is we opened it and looked everywhere and couldnt find it.

[@SaveGreenHere]

Look at the area where the copper lines lead up to your outdoor unit. Sometimes the refill port has a cover on the outdoor unit that is there and can be removed with a few screws.

[@ericlebar7035]

@@SaveGreenHere Thank you ill have a look

[@scottleppard288]

What do I do prior to going inside to check temp? Great vid. by the way, very helpful.

[@SaveGreenHere]

Add refrigerant in small increments, and wait 12-15 min before checking temp and pressures.

[@scottleppard288]

@@SaveGreenHere Do I shut the gauges down tight or leave them open and go check temperatures. I don't mean to be a bother just want to get it right, thank you.

[@SaveGreenHere]

Open when you add, close when not adding.

[@scottleppard288]

@@SaveGreenHere Got it! Thanks I really appreciate it!

[@scottleppard288]

@@SaveGreenHere I followed your directions exactly. My low side gauge totally tacked when attached. I tried to release the refrigerant as you said but nothing happened. Not sure why my blue gauge tacked backwards? Any tips?

[@eddiename8727]

This video is very helpful, thank you for taking the time to help people like me.

[@SaveGreenHere]

Glad it was helpful!

[@rahmanr112]

My entire freon must have evaporated as my return line connection was lose. I know i have to vacuum the lineset, should I close the those 2 hex nuts when I vacuum or leave it open and vacuum?

[@SaveGreenHere]

Tighten the lines properly, use Nylog, vacuum the lines, then add refrigerant. Links below..... Discounted links to DIY your mini split...... Manifold gauge set....... amzn.to/3cgXrTe 2 stage vacuum pump..... amzn.to/2JWdeM4 Adapter for mini split (5/16 to 1/4)... amzn.to/2Ys9qLN Nylog blue.... amzn.to/33iYLkS Senville 3/4 ton... amzn.to/2UiJhc5 Pad for outdoor... amzn.to/2EMd9Iy Refrigerant line protector kit... amzn.to/2Um1DZI Power cord.............. amzn.to/2XrPgQI Discount one year of Amazon Prime... amzn.to/2qz0RPa Kit to add outside plug..... amzn.to/2Y73aVE Extra refrigerant..... ebay.to/2AoIRvK

[@rahmanr112]

SaveGreenHere thanks for the reply, so just to confirm, I should keep the suction and the discharge lines open when I vacuum?

[@marcoendara719]

I connected the hoses to charge my Mitsubishi mini split and it looks like it has 150 psi. Does this mean it is overcharged and I need to remove some of the 410a to get to the 120 psi? The unit is running in cooling mode and the temp outside is 75 and 90% humidity. What is the best way to get it to the sweet spot 117-120 psi? Thanks

[@whtpwr]

Should the pressure be same in winter or still 117?

[@SaveGreenHere]

You have to run in cooling mode, which you may be off in the winter. Best thing to do is to weigh the refrigerant. The label will show how many pounds it takes. Put the refrigerant tank on the scale, and subtract how much needed. For example, on an empty system, with no refrigerant, place tank on scale. Let's say tank weighs 15 pounds, and system needs 3 pounds. Start adding refrigerant slowly, Open valves, close valves. Slowly adding. When tank shows weight on scale of 12 pounds, that means 3 pounds is in the system. What I did in the video is use a 2 pound tank, on a system completely empty, that needed 2 pounds, so no scale needed. Use a scale like this one..... amzn.to/3RAllzN

[@leevogel9487]

When I removed that adapter I lost a bunch of freon and oil on my new mini split, should I add a little more oil? And do I add freon if needed with the outside unit on or off? Sorry for the questions I do not want to mess this up.

[@SaveGreenHere]

ALWAYS add wit unit running in cooling mode. You will always lose a bit when removing the fitting. Nothing major.

[@philr6219]

Once you add refrigerant you should wait 15 min for the system to stabilize

[@jonmax-np9ze]

I have a dual zone Mr Cool, was wanting to know do I add freon to both zones or does one zone recharge whole system.

[@SuperOpinion8ed]

Probably too late for you personally, but I have a trizone and the manufacturer said it’s three separate systems.

[@patmac]

Great Vid Thanks. Any other suggestions for sourcing 410A. The like above is dead. Tx

[@SaveGreenHere]

You have to click the second link in the video description where a bunch of related links are at. Here it is anyway....... ebay.us/YKjza2

[@rolloutautotransport9646]

I have a set of gauges for automotive use and 117-120 maxes out the low side gauge. Can the high side gauge be used to charge the system?

[@danielluttrell7847]

I'm not an expert but I've heard experts say not to charge the high side.

[@unclebuck5051]

would it be the same for an inverter style minisplit in terms of the pressure and indoor reading?

[@SaveGreenHere]

Always best to weigh the refrigerant and make sure yours system is empty, which was the case here.

[@unclebuck5051]

@@SaveGreenHere Was the case where?

[@JeffMathieu-p6m]

I have a 3 unit MrCool; do I charge up each fitting separately? Or does charging one line complete the recharge process for all three?

[@stang1970]

Use the king xalxes. It's common

[@paulcole1171]

You forgot to show how to get the air out of the hose before you put the refridgerant into the system

[@SaveGreenHere]

It is covered in the video description. Also show here...... kzbin.info/www/bejne/iJ_HnXZvnJp7sLM

[@tyronedeasbrailsford951]

Very informative! Should the unit be running while this is taking place thanks

[@winefarmer1]

Is the procedure the same for a multi-head system?

[@ovm4133]

Do I need a valve core removal? Cuz I did it just like you and after I charged the unit I tried to disconnect the blue hose from the suction line and refrigerant try to come out and That was not a mínimis release?

[@SaveGreenHere]

You do not remove the valve core. What is a mimimis release???????????

[@ovm4133]

SaveGreenHere minimis release is when you release a very little refrigerant when you are removing the service hose, but I did everything just the way u did it but when I tried to remove the blue hose, a lot of refrigerant started to come out and it shouldn’t be like that

[@SaveGreenHere]

@@ovm4133 This is what I had on the page comment.... On the yellow hose, 1-connect to tank, and gauges. Slowly open the valve on the tank as to slowly release some refrigerant 2-On the gauges, slowly unscrew until you hear air out, should just take a second. On the blue (suction) hose, 1-Fully tighten hose on the unit, but semi tighten on the gauges. 2-After fully tightening on unit, the remnants of air in the line will bleed out at the connection to the gauges, (you will hear the sound of air coming out) at the manifold connection, and you can quickly tighten immediately after.

[@spiderstone]

If I'm just checking does it need to be running to check how much is in there?....I went to check it and it really came out...should I check it when not running..thanks subscribed

[@SaveGreenHere]

Yes, it needs to be running, and on COOLING mode.

[@Seriousgreeen]

if I make a mistake can it cause an explosion? concerned about bodily harm. , must the unit be on or off when you do this?

[@SaveGreenHere]

Must be on. Done properly if you get the amount of refrigerant based on the label, and use a scale to get the right weighted amount. Use one like this..... amzn.to/3tevpmF

[@mario241185]

If it’s a brand new mini split unit do they come charged with Freon? Because for one reason it’s not blowing cold air. I have the same exact one you have in the video

[@SaveGreenHere]

They have "some refrigerant" according to the unit we installed, but not to full capacity when you account for the refrigerant lines. So make 100% sure that your flare ends are tight, either use a gasket, or Nylog. This is number one priority. No use to add refrigerant if the ends are not 100% tight. Then, make sure you get plenty of extra refrigerant. I added the links below for your reference, depending on your pipe sizes..... Link to 1/4" seal...... amzn.to/30sMPNq Link to 3/8" seal..... amzn.to/2ZJ97eI Link to 1/2" seal.... amzn.to/2Cs7byf Link to 5/8" seal.... amzn.to/2OH1rDb Link to 3/4" seal.... amzn.to/2WBEdCP Link to more refrigerant..... ebay.to/2thWqdf or ebay.to/2JzUOjF Link to liquid mini split pipe sealer.... amzn.to/3jdNZVs The gauges..... amzn.to/31nTA1Y Adapter for mini split (5/16 to 1/4)... amzn.to/2Ys9qLN 2 stage vacuum pump..... amzn.to/2JWdeM4

[@mario241185]

I really appreciate your time on helping people with or no knowledge at all God bless you man!

[@dontworrybehappy9713]

Thanks for info

[@Mediaman67]

this is the second part of what you need to do: - this is what I do: - First, if you are low, that means you have a leak.. in my experience, it's that the fittings come loose after years of vibration... so before you do anything, turn the unit off - and re-tighten the fittings there are the two lines... use 2 wrenches... then I would use a vacuum pump on the system because if there is a leak, there will be some air in the system, and you don't want that. - once your gauge shows -20 for 30 mins (it means it's holding vacuum) then you know you have no leak, and can NOW recharge your system.... NOW you can turn the system on full cool and lowest temp it will go... fully empty it will take about 1/2 a container - like the one he shows... I didn't do the open close - I just opened it up a little bit and close it when you are at like 90 psi, and then do the open close :-) - BTW there is no High Side access on these which is not great - there really should be... but like the OP said, just take your time.