Troubleshoot DIY Mini Split Not Cooling - Replace MRCOOL 18k Mini Split

[@Dalton_D]

This i about the only video i found having to change the inside unit. Saved me a lot of reading time. This will be simple my outside unit is on the otehr side of the wall. I wont even get into why I have to change this and the worst customer service from MrCool. Great video, showed all how to swap it out, if I was a movie director id say cut the video from 16 min down to 5, but you still get the Oscar award. Thanks for posting and taking the time to do this. kudos

[@behrooz735]

The line was leaking and you changed the unit? And you are teaching people how to do by yourself?! God bless you America!

[@K1ZEK]

Love that wall flange. Great job.

[@shudoo8062]

I hope ya got a wax ring for that flange 😂 in all seriousness thanks for the video. Helped me a lot with my own install.

[@mattmccarty72]

Definitely looks like a handyman job ;)

[@marcosnobrega2475]

did you fix the unit as the title says... if yes I missed that. I saw the exchange part

[@dannypham3172]

What you take An AC like this is that magic

[@jmw92073]

Awesome video. Have a quick question for you. I have the same unit and I need to lines to exit the left side just just you have yours. It comes packed that way with the lines tucked to the left and looks like on the end you can cut out an opening. Just curios how you did yours?

[@itzwiz4867]

I was so confused bro. But when he said I gotta change my shirt or my wife is gonna kill me it all made sense ☺️. Nice Content by the way. I live in the Caribbean where it is hot most of the time and my split unit 12000BTU started blowing cool but not cold. Idk if it need gasing 🤷🏽‍♂️ but I serviced it and cleaned all the drain vents. If I go close to it I can feel the cold air. But if I go anywhere else in the room I swear a little. The lower evaporator use to get a little frost on it and quickly melt while the upper coil was dry and cool. But recently my lower coil stopped frosting and just has water dripping into the drain pan. Any tips? Sorry for the long Message 🙌🏽

[@itzwiz4867]

Sweat*

[@baby0821]

How or what did you do to keep bugs and lizards from crawling through the pvc pipe. Do you have a net or mesh around it.

[@kimojon9665]

Nice vid, and you are right on cost. You would pay $8K for one split system with about 3 ton capacity. Those would also suck a lot of power. I love these mini splits and they are the future for sure. You can even augment any current system in your house trying to keep up.

[@CeitDeVitto]

Thank you for this. I just ordered a DIY mini split for my attic space. I couldn't really find videos that have unique installations. I will have to mount it to a wall then have then run the wires in an unfinished space then back out into the room to be then run down the wall of the house. That is one option. I called a HAVC to install company and they wanted 6k for the installation of just a 12,000 BTU one - With the help of an electrician and an MR Cool DIY kit everything will cost me about 2800 - because I optioned to purchase a 23,000 BTU - Because I know the 1200 will not work, because I run a 14000 BTU portable AC -- which is a nice unit but not in an Attic Space - I only have skylights, so it really doesn't vent well.

[@tomac314]

I noticed that your line set is exiting the indoor unit on the left. Is that easy to do? The Mr Cool install instruction manual, (current models) does not give any left side options, (as far as I can see).

[@johnhouli3450]

Thank you Jeremy, I’m contemplating of buying a 12 or 18 k unit the room would be my living room. The thing that is stopping me is seeing the line in the front of my home.

[@elithenight]

They have covers. 130 for 10 feet if I'm not mistaken

[@NoSocialContract]

You are killing me with that toilet flange man, RectorSeal makes a wall sleeve and a wall flange that goes with it's lineset covers.

[@billiamc1969]

LMAO...that is hilarious...

[@lilmack191]

I'm having the exact same problem with my mini but my warranty is long passed. I wish you found out what was essentially the problem. To give me some kind of ideas to what I need to do in order to fix this prob.

[@PahjoDesigns]

Wish I could help more, but they just sent me another indoor unit.

[@josephbrice1358]

Wanted to know if the supplier you bought unit find indoor blower defective.?

[@douglasthompson2740]

Had you done a full vacuum pull down to test the lines before charging (Mr. Cool tells you you don't need to a huge weakness in the install) you would have found the leak most likely. That and the nitrogen pressure test can prevent incidents like this as you know after you do them you have a problem.

[@Camanohal]

Interesting video. Thanks for sharing. I found this because our 24K BTU MR Cool Ductless Heat pump (2nd Gen) quit heating a couple weeks ago. I had a technician out today and he found a leak that developed in the copper tubing at a soldered joint just above the accumulator. He commented that vibration was probably the likely cause and showed me a photo of another one from a previous job last week where that same line broke in half. Anyway I was curious if you had a feedback on how the warranty process with Mr Cool went. I have made contact with them and I am waiting for a technician to call back. Just curious how long the process took from start to finish on your warranty claim, and any other general comments you may have about the experience. Thanks!

[@PahjoDesigns]

The warranty process went smooth in my particular case. From the time I discovered the issue to the time the new parts arrived at my home, it took about 2 weeks. I’m just a DIY’er who doesn’t want to spend thousands of dollars on a mini split for my detached garage, which is why I like these units. MRCOOL will honor their warranty. Message me via my website if they don’t respond soon. I may be able to help you..

[@Camanohal]

@@PahjoDesigns Everything went well with our warranty claim. It took around the same amount of time as yours. Communication went well and they sent out a new unit. I just had to pick it up at a local freight company. I have the new one installed and everything is working good. I appreciate your feedback, as I wasn't sure what to expect. I was happy that MR Cool stood behind their product. :)

[@LeuCustomKnives]

@@Camanohal Watching this video because my mr cool diy 24k unit big suction line is freezing over and cooling but not super well. It must be low on refrigerant and is also pulling 11amps (2585 watts) when on instead of the usual 2 amps (470 watts). Hopefully a solder joint hasn’t developed a leak like yours did. Since they are on 3-4th Gen Diy builds did they send another second gen indoor unit? Or you got a 3rd Gen indoor unit to go with the second Gen outdoor unit? Thanks in advance!

[@Camanohal]

@@LeuCustomKnives Actually they sent us an entire new unit inside and out with pre charged lineset. It was the same generation that I already had. This was great because the cost to have an HVAC contractor charge can get pricey.

[@LeuCustomKnives]

@@Camanohal yes hvac full install is ridiculous. I’ve heard upwards of $7k for a 24k mini split 🙄. Would literally take 2 hours or less. And probably $5k is the labor cost in that $7k charge. What did it cost you to have your hvac guy diagnose the leak at one of the solder joints? Did they have to cut off the white covering that comes with the precharged lineset? I have a 2nd Gen 24k unit as well that’s leaking now too 😭.

[@billbozsnyak9170]

It’s been 3 years. Would u say Mr. Cool unit is dependable? Any trouble finding HVAC guys to fix this brand?

[@TheOccasionalGentleman]

Hey man, I also need to have my lines exit through the left hand side like you did there. How did you manage that? Both the outer casing and inner casing get in the way. I wish you hadnt skipped over that, since everyone typically just mounts it to their external wall and has their lines running directly behind the unit.

[@PahjoDesigns]

You have to slowly and carefully bend it. Scroll down a bit in this post and you’ll see a picture of it. do-daddy.com/diy-mini-split-installation/

[@basspig]

My Mr Cool DiY still works, it's just not blowing as cold air as it did the first year (2020). Air temp went from 38°F to 54°F in just three seasons. Outside unit is clear of debris and is blowing warm air. It's gotten progressively worse. Used to keep the room 67°F on a 90+ degree day on Silent Mode. Now it struggles to maintain 70°F on Turbo mode and it's only 86°F outside.

[@lees.2172]

What was the issue?

[@LeuCustomKnives]

Watching this video because my mr cool diy 24k unit big suction line is freezing over and cooling but not super well. It must be low on refrigerant and is also pulling 11amps (2585 watts) when on instead of the usual 2 amps (470 watts). Hopefully a solder joint hasn’t developed a leak

[@Barracuda48082]

Closet flange. Check the stepping exv..and many techs never test the invertor/compressor can for leaks in welds..one fissure or gas hole will do it..improper flares can also seep.

[@rogersamaniego7392]

Do you have to pull a vacuum before you open the service valves?

[@PahjoDesigns]

Not on this system.

[@domas4463]

Hi there, Just wondering did you vacuum your system before letting freon in the line?because the Moisture that enters the system can cause many and serious problems, such as moisture freezing in the refrigerant control orifice, acid, and oil sludging. Moisture freezing in the refrigerant flow orifice. This will result in poor cooling and lower than normal suction pressure if the orifice is partially blocked

[@Froggability]

Domas. These units have "pre charged" pipes apparently, with special connections

[@blly8325]

Hi Jeremy cool channel. It's Sunday Mother's Day in O.C. NY So all vendors and businesses are pretty much closed. Can't really get a straight answer from surfing the net. Got a question. Do you know if MrCool sells longer line sets or a vendor that supplies longer ones that are compatible with MrCool units ?

[@PahjoDesigns]

I’m not aware of a longer line set. Sorry man, wish i could help more.

[@arodandjeter1]

Did he leak check the flare fittings? Where they screw onto the outdoor unit? And where they connect off the indoor unit?

[@Bwh-rm3py]

I had the same problem. Received a warranty claim unit and had the same problem again. I finally gave up.

[@emptech]

How many microns did you evacuate the lineset and evaporator down to? Pardon me if somebody else has already asked the question, I didn't check the other responses. When you were diagnosing the system with a leak, did you try pressurizing with nitrogen ? Jim

[@PahjoDesigns]

emptech - thanks for reaching out to me. I hired a mini split HVAC professional to come and diagnose everything to prove it was faulty. From that point, I contacted MRCOOL and filed a warranty claim. They sent me a new indoor unit. I installed it and called my HVAC pro to recharge the system. In short, I don’t have that info.. I can maybe get it from my HVAC pro if it will help you.

[@emptech]

I've installed a few, fortunately have never had a problem I couldn't deal with. I've heard that so many people buy a DIY mini-split and don't even pump the system down, they have no idea how significant a little bit of water vapor can hurt, plus, they have no idea if there is a leak until they loose their refrigerant. I hope that when you finished the job, you covered up the lineset outside. I've seen in foreign countries where they put a shelf out on the second or third floor to mount the outside unit. Mini-splits are used all over the world, I think the US is way behind on the technology overall. Jim

[@stevekrisnasinnyk8159]

Hi - i wonder if you have any ideas fix a problem that is driving me nuts! When I run my Fujitsu mini split in Dry mode, in a couple of days i get water on the floor around the condensate pump. I replaced pump with new one but same problem.. I swapped the new pump with the pump from my furnace and still a water leak. Line from the unit is not kinked. Line from pump to drain pipe is not kinked or blocked. The unit itself is not leaking the wall is not wet. The float in the pump works when i pour water into the pump. I also disconnected the pump and ran the drain into a bucket This worked fine with no leaks. Any ideas?

[@mijohnst]

Man, I love those flexable coolant lines. I just ran lines for a mini split for a room over my garage and running those stiff copper pipes really sucked. I wonder if I could have use Mr. Cool on my unit.

[@PahjoDesigns]

They are definitely convenient. These DIY units are all in one, meaning the lines are connected to the inside unit out of the box. I’m not sure if they sell the lines separately.

[@futurfoto680]

Great video - thanks! I installed three Pioneer Mini-Splits two years ago (identical to MRCOOL), and they have been the best things I've done for our house. One was the 12000, and two were 24000 BTU's. They cool very well, it's easy to clean their filters, and the savings in electricity is phenomenal! I had a question, but I don't know if you've needed to delve into any maintenance yet. I want to clean the fan blades, which are the only things that have become "gunked" up over two years (the coil fins still look great). But - do you know the "secret" to removing the full front covers? (Not just the main flip-up access door - I need to take off the whole plastic cover - front, top, and sides.) I can't find the placement for the screws inside the vent area that most mini-splits have. Do you know where the screws to remove the cover are? Please enjoy your efficient cooling / heating system! Thanks again, Randall

[@PahjoDesigns]

Thanks so much for the comment. I didn’t know pioneer was the same as MRCOOL. I’ve had the same questions as you regarding removing the pieces and cleaning the unit. So, I’ve just asked my HVAC pro to clean my mini splits when he performs annual maintenance on his other units. Where did you buy your pioneer units from?

[@MichaelWeaser]

@@PahjoDesigns all of these mini splits are rebranded mini splits made by the Chinese company Midea. Many many companies rebrand Midea mini splits. Pioneer , Mr.cool , blueridge and others. Even Carrier mini splits are now rebranded Midea since now Carrier owns apart of them. Some of these brands people have more trouble with than others. some of these companies that rebrand Midea design a custom control board for their outdoor / indoor units or some use custom control code / programming on standard Midea control board . This is partially why one brand can have more problems than another. Also if you want the cheapest Midea rebrand mini split, buy one that is Midea branded , or even one that is not branded at all. They have various other problems because of how cheap they are . allot of them will eventually have refrigerant leakage problem because of how cheap the coils are with these

[@tonykara]

@@MichaelWeaser How did you learn all this? I'm deep in the middle of choosing a mini-split now, and the brands and options are mind numbing.

[@MichaelWeaser]

@@tonykara i was told by a company that sells mostly Midea branded mini splits, and if you look at different brands , and they look identical they are.

[@Larmabean22]

Their customer service really sucks. I had the exact same issue except no HVAC technician wanted to come check my DIY for leaks during the busy the hot Texas money making months. It took MrCool over 2 months of going back and forth (also being ignored several times and having to call or email different people to find out why my support tech stopped responding) and hundreds of dollars in equipment and well over 20-30 hours of my husband and myself combined trying to find the culprit leak to finally get a warranty replacement for the indoor unit. When they finally did, they didn’t send the replacement unit with pre charged lines-which would save me so much grief! Now it’s going to have have to be done by HVAC tech if one will help-it’s August in Texas so it’s doubtful and expensive or I’ll have to get even more equipment to do it myself which costs even more money. It’s cost me more to warranty this unit than to buy a new one. And will cost me even more just to install the new head unit. It’s like they’re trying to punish me for using my warranty.

[@edwardsferrazza9646]

Hey guys. I’ve had nothing but problems using those insulated line sets with the white foam. I’ve replaced them on a few units. If you inspect them closely, you’ll notice how porous they are. I added the due capsules for POE oil and it permeated through the pipe and the insulation. Try not to use these line sets. You’ll save time and money. Run the American made copper tubing. Good luck.

[@magicbbman32]

How did you pump down the system in order to remove the lines from the compressor?

[@Froggability]

magicbbman32. Probably didn't

[@shayprovince1814]

He said the machine had already pulled itself into a vacuum the first tome, so maybe it did it twice

[@twlyons1]

Do you have any updates as to MrCool and or reliability ?

[@PahjoDesigns]

It’s been great. I did have one fail on me a few weeks after installation, but they sent a replacement unit and it’s been perfect ever since. I have 3 of these units and they are great.

[@twlyons1]

I see so many installs and very little next to none of the long lasting vids, Being a disabled Vet, the moneys we spend are pre searched for long lasting and 10 years is not too great of an expectation, thank you for your timely reply too :)

[@vincecaruso2459]

Any idea on the failure rate for these units? Know one that lasted only about 2 years before having cooling issues. Seems like a good design if it does not break down like yours did.

[@RadioRich100]

More than likely if failed because it wasnt installed right. Coiling the lineset.

[@newsview7844]

My first experience with a mini split has been a nightmare. I bought the 12K 4th Gen DIY model from Costco and it has been a complete lemon despite replacing essentially everything over a three month period. Upon initial install, it immediately threw a communications error on the evaporator (indoor) unit. Support for the issue started out with the claim the evaporator could be wired wrong. Had us switch wire positions. After that, it wouldn't run. (Had to go back in and put the wires back the way we found them, only to encounter another error this time suggesting the evaporater itself was defective.) Next, they had us replace a circuit board in the outside condenser. Still, there was no signs of life from the condenser. Ultimately, everything was replaced bit by bit over THREE MONTHS before my Labor Day 2023 weekend install began heating in time for winter. Something to note: I live in a State where manufacturers can't charge shipping/handling for warranty parts so I was out nothing when they also replaced the condenser. I have since run across many complaints on this and other brands where owners complain the freight is prohibitive (considered oversized for shipping purposes). Another thing I have come to appreciate after the fact is that HVAC pros don't have access to parts for Mr. Cool. They depend on the manufacturer same as the customer does in a DIY situation. When the condenser was replaced. Mr. Cool also replaced the linesets. Come Spring, we needed to move from heating to AUTO mode. That's when we realized we had yet another problem. At night it was cold (not putting out heat). During the day it was hot (not cooling). It just sat there doing nothing when set to AUTO. We were simply told that AUTO mode doesn't work well. (Nothing they could do about it.) While our Springtime help ticket was still open, we had a late Spring heatwave so we set it in COOL-only mode (24/7 operation). The ability to cool from outside temperature was less than the same BTU wall units this mini split replaced. (Expected about 25 degrees cooler from outside temp on 100F day but saw only about 15F cooling in early June.) From June to July, the cooling capacity became progressively worse and now the inside temperature is only about 5F cooler than outside temperature. Last fall I have to say that once we did hear from MR. COOL, tech support was great but for the fact that it was slow working through all the steps to determine what part needed to be replaced (which unfortunately amounted to everything). This time around, help has been confined to a supervisor named "Patrick" who called once and put our service ticket on hold even though there was no resolution. I then tried to restart the warranty support process over email, but the same supervisor keeps responding and none of the replies reflect that any of the emails have been read or understood in the least. (I can't blame it on a language barrier because Mr. Cool has U.S.-based support.). I then emailed Mr. Cool a photo of a weather station hanging on the wall of the room that displays the daytime and nighttime high/low temperatures in a single glance. The nighttime temperature was only ONE DEGREE cooler than the outside temperatures, which confirms it is isn't putting out cold air at all. After sending the photo, there was no acknowledgement. Instead it was stated that it takes awhile to cool the room down if you turn the mini split off. (It had been on 24/7 since it was installed last year and that was made clear in all support emails.) For a DIYer, the thermometer gun is about as valid a test as one can get. (You can find websites online that tell you how cold the air should be blowing. So without being guided through any troubleshooting steps by Mr. Cool, I used an infrared thermometer "gun" to check the air temp coming out of the evaporator (72-75F) and then emailed what I found to "Patrick". His answer was that a thermometer gun - even though I have seen HVAC pros use them! - is not a valid test to determine what comes out of the evaporator because it depends on the temperature of the air going in through the top of the unit. The sum total of the "help" received in three months is to set the thermostat lower. (It's been set to 65 for weeks!) I am now at the point where I have no choice but to get Costco customer service involved. I asked on Friday if they could facilitate Mr. Cool reimbursing us for the cost of getting an HVAC tech out - if we can find one who will agree to take a look at it. I don't yet know if Costco will have any success with this request, but in order to obtain a refund they expect us to uninstall this lemon and wrangle it back inside the manufacturer packaging to return it using a return ship label. (It is next to impossible to repack this thing; but fortunately for us we hung onto the packaging!) At that point, we would be looking at essentially a third uninstall, go back and patch the mini split hole in the wall, open up the wall again where the old A/C wall unit was and replace our mini split nightmare with a modern inverter type A/C unit. (Costco is good about standing behind what they sell but it's the hassle of this that has me tearing out my hair more than anything.) Mr. Cool did not help in the least on this current situation but I learned, thanks to KZbin and elsewhere, that one of the potential causes of failing to blow cold air, besides the obvious culprit of low refrigerant, is a dirty condenser and a dirty evaporator. The energy savings are considerable for a mini split but unlike a conventional wall unit a mini split does NOT bring in fresh air and are therefore known to clog up and accumulate mold in the evaporator. They are not "low maintenance" compared to other forms of A/C. Had I known that Mr. Cool units require a deep cleaning every six months - potentially to include a partial tear down to gain access to the blower wheel in the evaporator which is where mold may accumulate - I would NOT have bought this or any other mini split. (Simpler installation, less maintenance and similar savings on an electric bill by buying a modern inverter wall-unit style A/C vs. a mini split.) In closing, Mr. Cool does not have any authorized service providers. If there are problems, the customer is 100 percent dependent on their phone/email support to troubleshoot. In fact, their phone lines are so busy you will be lucky to get a callback and if you do get a callback it won't be a technician. A customer service agent will confirm that they are just adding you to the list. Even if you *already have an open ticket* you will be asked to wait in line. Given that this unit has been a lemon, I find the fact that they are making me wait longer for technician follow up suggestive of the expectation that they intend to simply run out the clock on customers' patience if not the warranty. Upon visiting the Better Business Bureau profile for this company, there are dozens of pages of customer horror stories. I have, in the course of trying to get our unit working properly over the past year, posted questions to MR COOL install and troubleshooting videos only to have KZbin take my comments down. The company is protecting their reputation by making sure word doesn't get out.

[@ram457moreno]

I have the same set up I want to do for my new mrcool diy . The place I want to mounting unit The inside unit it’s going to be above a door opening then behind it I have to go through closet wall wall then the through my closet wall and then to the outside. 3 walls to get to the outside. My issue is how much space do I need to hang the inside unit over the door way ? Right now I measure 15 in is that enough to left and hook the unit to the mounting bracket? Also the drain line I don’t want to run it through all those walls I was thinking of running it over the doorway behind it and then straight down to my floor under the house and out what do you think ? I noticed that you left the drain line out and then you fished it through And then it’s almost like if I was gonna do the same thing but I’m thinking of just running it behind the doorway straight down to the ground in and out of my house

[@PahjoDesigns]

Ram M457 - I will measure my unit and see, but I think 15” is not enough space for the 24k unit I have. The smaller unit may be smaller in size. Regarding the drain line, I would run it the shortest route to drain. Make sure you slope the line set and drain line downwards as you go through walls. I’m currently doing my 3rd MRCOOL installation video for my spray foam attic, so stay tuned for that one

[@ram457moreno]

Pahjo Designs thank you for replying I will Have to make the wall entryway a little bit wider that way he can have enough space to be able to lift the unit and lock it in place as far as a drain line if you show in your next video how you’re doing the drain line will be awesome thank you for replying I am waiting for your video when you upload it I currently have not bought The unit but I will soon and that is the only place I can mount it so I have to do some modifications to make it work in that entryway thank you again I appreciate your reply

[@johngranoski4440]

Sorry, gotta ask. The Bell??? A very technical question! Two thumbs up BTW. 6.7 up.

[@PahjoDesigns]

Lol - are you referring to my ship’s bell? If so, my Dad and other members of my family design and build boats and large ships. I have a ton if stuff like this my Dad gave to me that came from very old ships, so I decided to put some of these items on display in my office. ;)

[@johngranoski4440]

Yes, the ships bell in the video. Nice job. I do have some comments about your Mr Cool (to follow) and you did cause me to go to the Home Depot site for pricing. So they should either sponsor you, or reimburse your $200 out of pocket. CHeers

[@sartazahmad4420]

Thankyou sir

[@michaelraduazzo6146]

So, I doubt you're still reading comments from this video but could really use the help. I installed an 18 Mr cool this weekend and the bottom clip is not seated right. I need to lift the unit from the wall but I cannot move it to save my life. I know I have to disengage those clips on the bottom but no idea how. Any help is greatly appreciated.

[@paulhance1984]

Try a flat head screw driver at the bottom clip and than pull on the rubber portion of the air handler . It should come out. I had similar problem and that’s how I remove the unit and remount the 12 k air handler

[@averyalexander2303]

I have a question. Did Mr. Cool pay for the tech to come out and diagnose the system, or were you stuck paying to diagnose the unit? Thanks

[@PahjoDesigns]

I paid the cost of the service technician. Luckily, he is a good friend so I cooked dinner for him while he diagnosed my mini split.

[@averyalexander2303]

@@PahjoDesigns Thank you

[@carljensen5730]

You didn't show how to take the old unit apart. Mine is working fine, but I missed getting the condenser line through the hole. I don't know how to get the condenser pipe through the hole that is blocked by the inside unit.

[@Cat-lo7hl]

I have a similar space with spray foam insulation in the walls. Im have two questions. What size as far as tons is you unit and square footage. Also, i just discovered I have a freon leak on my inside unit. You can see the freon shooting out of one of the copper tubes in the coil. I wondered what the warranty is on these units

[@PahjoDesigns]

My space is roughly 600 sq feet. Not sure of the unit size in tons, but it is 18k BTU and 16 seer

[@beebee1518]

I now is a year later but a ton is 12000 BTU. Every ton is good for 600sq feet in average insulation hope it helps

[@Cat-lo7hl]

@@beebee1518 Thanks for the info! What your saying is true!

[@shannonbossard5404]

I have the same unit and it just stopped cooling or heating! Did yours give you an error code at all? Mine did not.

[@PahjoDesigns]

Shannon Bossard - no error code for mine. It just stopped cooling.

[@davejohnson497]

i have the same problem as you...dont know why yet

[@dantedifilippo9011]

you had to ship broken mr cool back did mr cool pay for tech to trouble shoot the unit

[@PahjoDesigns]

No, they sent me a new unit and paid the shipping to return the broken unit. They didn’t pay for the tech to diagnose the problem.

[@golfwins1974]

Nice video! Care to sell the extra Wi-Fi kit or know where I can order one?

[@PahjoDesigns]

golfwins1974 - thank you very much for watching. The wifi kit went back to MRCOOL in the old unit.

[@drek67045]

INGRAMS WATER AND AIR OR EBAY USUALLY AROUND $50 FOR THE KIT

[@PahjoDesigns]

They also have a new smartphone kit that includes WiFi & Amazon Alexa integration.

[@anthonygasparini1734]

Great video but....At 14.30 on your video while you were up on the ladder I noticed you had the ladder against the building backwards!!!! Wow be careful my friend.

[@houstonpromotion]

Anthony Gasparini he was careful that’s why he didn’t fall lol

[@Poncho758]

Thank you so much. Great job and I appreciate your honesty.

[@PahjoDesigns]

You are very welcome

[@Hawken54]

I had an LG mini split for 12 years and it was a waste of money. The indoor unit malfunctioned and the outdoor unit broke down twice. Went back to window units.

[@neppy5]

LG as a brand in general sucks

[@sergethomas8853]

I am surprised the HVAC guy did not vacuum the lines and then check if it hold the vacuum or better nitrogen pressure the line and see if it holds. That should have told you if the leak was within the lines or the coil. Another thing, you normally should have added R410a to the compressor since it was nearly empty. Form this, it is best to vacuum to a recovery tank and weigh the refrigerant recovered, then pump it back and add to the exact weight of refrigerant. Or better, add new refrigerant. Folks, make sure you take pictures of your serial number in and out units as they are printed on paper and don't last. Useful if you need to get the warranty. I was able to find the leak in my inside unit within the coils where the electrical is. Not sure the warranty will work as I cannot get the serial numbers (my inside unit has some of it missing and the outside unit serial is gone).

[@carlosalmeida8713]

What is that white thing dangling from the wires at the bottom? I can’t get mine to start I think it might be missing a remote control sensor?

[@PahjoDesigns]

That is the LCD display or it may be the holder for the usb WiFi controller.

[@toyota38]

You had a leak because of not pulling a vacuum on the line set and evaporator. In Louisiana, once you pull the plug on the line set before you make the connection at the condenser valves, humid air enters the system. The non condensables “humidity/moisture” when mixed with the refrigerant and oil in the system create acids that eat through components causing leaks. After connecting the line set, the system should be evacuated with a vacuum pump, checked for leaks, then the refrigerant valves opened to release the refrigerant into the vacuumed dry sealed system!

[@jameshuebner8194]

Initially when bought the DIY Mr Cools have charged lines. The Advantage series does not and what you said applies to those

[@851995STARGATE]

The type he installed is pre filled and pre vacuumed for diy setup

[@johnpatrick3458]

The lines are not "pre vacuumed". No matter what, you always pull a vacuum. I'm a 18 year HVAC service technician and have been installing these for years.

[@851995STARGATE]

@@johnpatrick3458 you have not installed this unit then....

[@johnpatrick3458]

@@851995STARGATE You haven't a clue what you are talking about. You are saying that the lineset, outdoor unit and indoor unit is sealed to moisture and contaminants in the atmosphere through completion of installation. That is impossible because before you install the lineset that connects the outdoor unit to the indoor unit for the purpose of refrigerant flow it has to be open to the atmosphere before you make your connections.

[@TheFalconJetDriver]

As I await the arrival of my DIY MrCool that I ordered on June 15, 2020, I am looking at all the videos I can find on the MrCool units. What I have learned that the 3 rd generation that is shipping now has 4 line set connections instead of two like this one does and the line sets are soft copper tubing un like the flexible lines. Not be flexible to me is a negative. This could have been a weak point and thus gone to soft copper line sets. Why 4 connects is my guess that you would un coil only the amount of the line set needed and that the remaining could be hung on the wall and not have to be feed through the 3.5 in hole. I have have installed two other non diy mini split units with out issue. However this time I went with the DIY since I am not a HVAC guy the warranty would be the issue if I installed it chances are great that a manufacturer would say I made a mistake. So after careful consideration I decided to go the DIY route and pay about $600.00 more plus I would not have to buy a set of gauges and vacuum pump. Descent gauges and pump cost do not out weigh the small saving to me if I did have an issue mean zero support of a warranty. Seeing this video and his resolution confirmed to my self that I made the correct decision. I will say I have made many flared connections or years and darn few failures I feel confident making up a line set. In the case with this MrCool I will have a length of 17 feet to coil up and suspend. In my case mine will be protected from eyes and anything that could compromise the lines set, so I can live with this slight negative. Good video both of yours that viewed. 😁🛫

[@PahjoDesigns]

Definitely made the right decision. My Dad purchased the one you purchased and it is much better than the one in this video. Thanks for watching and commenting

[@TheFalconJetDriver]

Pahjo Designs I learned today that my 24k 3rd generation unit will be delivered on Monday, I will provide feedback if I discover anything being note worthy..😁🛫

[@TheFalconJetDriver]

Feedback/ update my 24k DIY arrived on Monday June 29, however it arrived at my local shipping terminal on Friday at 1:41 AM it sat in the terminal all day Friday Sat and Sunday was delivered on Monday. I evacuated the system of the old 12 K mini split it going to a new location. I completed the electrical work for the 240 the other one was 120. Hung the air handler and formed the lines for the line set hook up. After attaching the the high side I could hear the gas escape the line set Into the evaporator on the low side of the evaporator the plastic plug popped off. At this point the other end of the line set had not been connected to the condenser. It turns out the proprietary fitting that should have been on the low side of the evaporator was not installed it was only a flare fitting. I contacted my sales person he had me send pictures. So today I got an email thanking me For my order this concerned me yes they agreed I needed a new line set and evaporator. The new order aspect gave me the impression that this would be handled as a new order not a we have to get it there ASAP as I have no conditioned air and the temps are in the 100’s. So I will have see how they handle this mess up and the priority of the shipping.😩🛫

[@PahjoDesigns]

Hopefully it arrives soon!! It’s HOT this summer!

[@oidodsonido]

actually sir you can run the refrigerant lines up with the drain lines as well all you have to do is ad a mini split condensate pump and then you can run the lines anyway you like. the pump will pump the water out when the reservoir container gets full of water.

[@pattyyoung590]

What does it mean if "FO" is shown on the front of the unit?

[@ObscureManifesto]

This is 5 years ago, but I just got 5 different quotes for a 4 ton furnace system. The average quote was 14 grand! No new plenum, no new ducting. Highest quote was 20k, lowest was 9k. MrCool DIY is going to be about 6k.

[@PahjoDesigns]

This one is still working great

[@PhilippZ]

The contractors here in New England all use Samsung, Fujitsu, or Mitsubishi. I got a quote for a 28000 system w/ 3 air handlers for $14K installed. Senville sells the system for under $3,000 and I don't think this Chinese brand is any worse than the Japanese/Korean brands. Can't believe electrical and installation labor is over $10K...

[@donaldpainter956]

If the leak is in the line then changing the indoor unit won't fix it you will need a new lineset

[@goldengirls0125]

I just had my second mr cool break within a year. No more mini splits sorry. Dual inverter window units way better and gas heat.

[@ellismckinney4888]

Anyone? How many inches i.need.for vent top? I have 2 will that be enough? Ty

[@iSeeTicks]

Just installed 2 of these (12k and 18k) and 18k works but 12k was shwoing p4 right away. Did whatever troubleshoot that was mentioned and was seeing 120v and the valves were open. Called their tech support 3 times and left 3 messages because thats all you can do but didnt get any call back. Went to their site and started a chat and they told me to call hvac and have them look at it. Wtf? Would you buy a brand new tv, bring it home to find out its broken and pay a repair guy to come and look at it?

[@newsview7844]

They don't have anybody subcontracted to perform service. And from what I have heard, HVAC don't like to work on stuff they can't get parts for and didn't sell the customer in the first place. My 12K 4th gen mini split took three months from install to get up and running due to the P4 and other errors. Every part was tediously replaced under warranty. By then it was late fall. Heated during the winter. Then found out AUTO mode would not work in Spring. By summer, I found out that the cooling wasn't working either. I get 72-76F coming out of the evaporator (indoor unit). Mr. Cool literally told me that using an infrared thermometer to check the temp this way was not a valid test but did not suggest any other test. Now we're going into August and my help ticket - filed in May - is still being ignored. All you can do is leave a callback number but when they do call back they claim they are customer service, not technicians. Despite the fact that my unit was a lemon out of the starting gate, they would not expedite my access to a technician. They could not tell me when I might hear back from a technician. I am afraid that if this is not fixed before the end of summer, I won't have any idea whatsoever if the cooling is working before next summer. But even if I had lucked out and my experience had been better, I am no longer sold on mini splits. My main reason for buying a mini split was to cut my outrageous electricity bills for heating an attached (insulated) garage. What I didn't know is that mini splits recycle air, whereas traditional through-wall A/C units bring in fresh air. It's not well understood by first-time buyers that one may have to deep clean the outdoor and indoor mini split up to twice a year, and even when you do clean them you may or may not be able to clean the blower wheel - which is where mold can accumulate as a consequence of the moisture and the recycled air. So the air may not be healthy for anyone to breathe, if it is not frequently and properly serviced! I am kicking myself that I returned a working inverter through-wall unit to Costco - that they no longer carry, of course -that was cooling my space very well at a fraction of the size, cost and hassle compared to a conventional A/C wall in order to "upgrade" to this mini split. I thought mini split was the way to go because most cooling/heating combo wall units do not have the capacity to heat in the winter below 40F degrees. I did not want to bother with a supplemental heat source and thought that mini split would solve that problem. If I had known that they would be high maintenance and that failure to clean them inside and out every six months could mean a significant decline in performance if not also mold growth on the difficult-to-access blower wheel, I would not have bought ANY mini split! If hindsight is 20/20 a modern inverter wall unit will have similar performance with far less hassle and cost compared to a mini split.

[@gk10002000]

I did not notice fill and purge breakouts on the DIY install video. The DIY units come pre charged which sounds nice but I still have my doubts.

[@myHombre]

hey mr. cool my aircon have problem split aircon his authomatic off and ders a logo blinking near in timer

[@RadioRich100]

Your mr cool isnt your only problem learn to use the english language and spellinng.

[@bgregg55]

Well that was not what I wanted to hear about mr cool: a leak after one year. I would have wanted a complete replacement (both indoor & outdoor units). Did they say you had to pay for an HVAC tech to get the replacement indoor unit? How did he know it wasn't the outdoor unit leaking? And how is it even possible he couldn't find the leak?

[@PahjoDesigns]

bgregg55 - I had to pay for the service tech to diagnose the issue. He couldn't find the leak because it was in the line set somewhere which is concealed. The tech would have needed to rip the whole unit apart to find the leak. Instead, I called MRCOOL and they shipped a new inside unit and that did the trick. I wrote a blog about this which is a bit more detailed. Link in the description. Thanks for watching!!!

[@PahjoDesigns]

I actually believe this unit was not right out of the box OR I did something wrong during the installation. This unit was in a room that I don't use very often. I installed this unit in October and really didn't need to use it until the weather warmed up in April/May timeframe. I live in South Louisiana where we have very mild winters. I noticed the issue in May. I was happy with the customer service I received from MrCool. Lets face it, stuff breaks. As long as the company stands behind their product and treats their customers well, that's all we as consumers can ask for.

[@tannersmith6525]

Out of curiosity how much did it cost to have a tech come out

[@PahjoDesigns]

He was a friend of mine, so it didn’t cost me anything. If he were to charge me, it would cost at least 125.00.

[@tannersmith6525]

bgregg55 what was your unit doing that alerted you it was bad? I just got one a week ago and I feel like it isnt heating or cooling very well at all. The heat comes on sometimes but most of the time its blowing slightly warmer air than what's outside and slightly cooler than what's outside withing 1 or 2 degrees

[@emaderaghi]

Half way into the video I still haven't learned why my AC is not cooling!

[@dontblameme6328]

Good job but you sontbsound like tour from south Louisiana...maybe you live there, but not feom there. Right?

[@judytaptich1506]

my remote doesnt work and it acted up from the start. Tried everything.. no heat last winter now it wont lower the temp to cool

[@Airdaddy55]

Yes mini splits work quite well for about 1 year. Then the leaks start happening, the main boards fail, or you will get a communication E5 or E6 code. These units are throw away pieces of garage. I've worked on And am a mechanical contractor and anything you save on your electric bill will quickly paid in servicing costs. We will no longer install mimi splts, because we have by law to honor a 1 year install warranty. This customer is only at beginning of his nightmares with these minisplits. Very rarely we will find one that is still running after 5 years. So with all that money you blow away on these garbage units, on repairs and leaks, you could have spent your money on a regular zoned A/C unit. Yes there good for doing a garage attic or older homes. But just remember they WILL leak, constantly break down, and will be unreliable. So that's your trade off. Very short term convenience, for a nothing but problems after 1 to 2 years. I know there will be people that will say there units lasted 6 or 8 years, those are rare cases. Or experience on these units is you will definitely have a problem, and a major problem, with these units in 3 years.

[@Sniper.925]

Mines is now starting inside or outside it’s completely dead

[@Burning2nd]

damn man, your sloppy af, so whats the consensus ? you had a leak, Did you locate it and fix it? Ive seen techs repair coils on roof top units... how does the mr cool brand hold up? Im fishining the 24k install tomorrow

[@PahjoDesigns]

They sent me a new indoor unit and it’s been working like a champ since. My other unit has held up as well.

[@Burning2nd]

@@PahjoDesigns Thank you

[@Burning2nd]

follow up: Do you know how to calibrate the remote control "Follow me" *mr cool thinks its 72, but its 70

[@zharewood1010]

How can I open the front of my Pioneer air indoor unit

[@vascotapia6774]

With your hands

[@frankhopkins2980]

I dont get why you would go through the trouble of replacing the evap head when their was clearly no issue with it, makes no sense to have them give you a brand new one

[@PahjoDesigns]

You need to pose that question to MRCOOL. I didn’t make them do anything nor did I ask them to replace that particular part.

[@FLHTdriver]

Hi, I just installed a 24k unit and seem to have the same problem as you. Did you're unit start out cooling the air then warm to room temp before reaching the set temperature? Since I live over 3 hours drive each way for a tech to visit and diagnose my problem Mr Cool is sending a recharge kit. I hope this helps but once a leak starts its a real pain to find and fix. Any help would be appreciated. Joe C. Lakeview Oregon

[@PahjoDesigns]

Joe Cos - mine started blowing warm air out of the gate. If it doesn’t work, I would ask them to send you a whole new interior unit.

[@FLHTdriver]

Thanks for the quick reply, I will try the recharge kit but i don't think its going to help since it blows cold then turns warm after a few min. I am going to ask for a complete new unit, indoors and out since I can't tell where the problem is located. Mr Cool thinks it may be in the temp sensors inside and outside. Will let you know how this shakes out. Thanks again!

[@edwardsferrazza9646]

Replace the line set with American made copper. These Chinese ones are too flimsy.

[@live4545]

ha toilet flange for the wall plate ! i like it

[@pubgerm6454]

He added freon. So he didn't accurately charge the unit then. Have to weigh the charge in for Minisplits.

[@MatHelm]

Flange, as in a toilet flange... But at least you didn't include the sticky wax ring.

[@PahjoDesigns]

I hope you enjoy my how to replace a mini split video. This video is my 2nd mini split video and an update to my first mini split video.

[@josephriina70]

Hi jer, Great video. just wanted to ask, did Mr.cool co. reimburse you for the pro hvac guy inspections? Those mini splits look like great options.

[@PahjoDesigns]

joe911 - MRCOOL did not reimburse me for the HVAC technician visits. Both visits were 200.00 in total. Thanks for watching!

[@humanofearth7524]

I did a new install and I had a p4 and now my ac won’t work. Big FN piece of junk.

[@simonac688.]

good solution: Easy seal it works 95% of the time...

[@WilliamDumoreGlobz]

I swear I haven't been drinking

[@RangerCaptain11A]

sorry bro, that wall is a pentagon shape. or, if you want, a trapezoid on a rectangle.

[@kevinkall8547]

Those external units and loose wiring/piping up the wall into the loft looks horrid.

[@judytaptich1506]

where do you get the phone number because I could not get anybody to answer the phone?

[@hasmukhpatel4301]

Nice video. But you are talking unnecessary and showing less installation

[@christiandaniel3738]

Dude you're totally wrong 🤣 smh . Shutting the isolation valves at the outdoor unit isn't gonna remove the refrigerant from the lineset . And you failed to mention who pulled the vacuum. And how do you even know the old head was leaking? Folks don't do this

[@bird-yd7ge]

I see no troubleshooting at all. This is an exchange video.

[@Froggability]

The "tech" came, added Freon, then drove off? Surely any half baked tech would search for/repair the leak first 🤔

[@arodandjeter1]

Yeah. I mean i top units off a lot and let the customer see how long it'll last but this guy said his was in a vaccum. Like that's a whole different story lol

[@dand1486]

hahaha he has no idea what hes doing