How to Work on Mini Splits?

Curious about how to work on mini splits? Watch this video for a step-by-step guide on how to maintain and troubleshoot your mini split system.
Learn how to troubleshoot common issues with mini splits, including heating and cooling problems.
Taddy digest provides expert tips for mini split repairs.
HVAC Videos
How to know if the Mini Splits Low in Cooling Mode
• Mini Split Not Cooling...
HVAC Tools
Yellow Jacket 42004 Series 41 Manifold with 3-1/8" Gauge
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Micro Leads for Testing Sensors
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Fieldpiece - TC24 - Pipe Clamp Thermocouple
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[@juliangonzalez3541]

My name is julian I am a tech from Florida I really appreciate all y'all guys that uploading all of this videos for us junior techs can expand our knowledge and learn something every day, your videos are amazing and really explainedatory thank u for taking your time to teach us and keep making these videos God bless everyone

[@TaddyDigest]

Thank you Julian I'm glad you are learning I hope you are filled with joy Thank you so much for watching

[@juliangonzalez3541]

@@TaddyDigest thanks my man same2u 👍

[@davidth.o.g.2229]

I too am more knowfull from the explaindatoryness of thier vids... Just playing great video guys and good luck to you Julian, I'm still trying to learn more everyday myself

[@palarious]

This is absolutely the best breakdown of how to work on a mini split I've found so far. Comprehensive and approachable.

[@TaddyDigest]

Thank you so much I appreciate your analysis 😊 🙏 Have a Blessed Day 🙌

[@anvibrimel41]

This is the best Mini Split teaching I ever heard, thanks a lot TEACHER

[@TaddyDigest]

So glad to hear this my friend. Thank you so much watching.

[@thomasdaddy7156]

Great job showing the different components of these new Mini Splits they sure are a different breed

[@randycrass2097]

Absolutely, Taddey is an inspiration. Admiration and respect to a guy who is willing to share tips tricks and experiences with all those in his sphere of influence (HVAC Brothers). That's what makes a teacher a Leader. Retired now but love to keep up on the up and coming leaders in the business. Hats off great job keep learning, keep sharing, you are a leader.

[@TaddyDigest]

Thank you Randy 😊

[@estevezcarlos67]

Thank you for this video. I have a question. You have repeated several times that you pressurize the mini split systems with 500 Lbs./PSI of nitrogen. Does that not compromise the evap coil as most mini split evap coils are rated for 340-350 Lbs/psi? I've never heard of a system being pressurized with nitrogen to such a high level. Apart from that I found your video very informative. Thank you

[@carllungwitz5171]

Loved your video, well done! I've been in the trade 50 years, you've earn my respect.

[@TaddyDigest]

Thank you my friend really appreciate the kindness

[@byronlentz4825]

Been doing conventual split system for several years. Found it next to impossible to find information on mini split systems. Thanks for the help.

[@TaddyDigest]

So glad you watched the video thank you Byron for watching let me know how I can help

[@acrservicesmathewr7565]

I work on a lot of these units. Mainly Mitsubishi and it’s awesome to have somebody who really knows everything about this equipment. I feel way more comfortable testing these sensors while doing service calls. Love what you do. Keep ‘‘em coming

[@TaddyDigest]

Awesome man thank you so much hope you have a blessed day

[@roberthernandez1985]

Great video I am sponsored by Daikin and I love their equipment I have all the testing equipment they offer to check inverter frequency fan operation communication tests for indoor and outdoor not a lot of techs truly understand these units or even the principals of SPWM I think that more people like you should be teaching how these units work because VFD equipment is the wave of the future as far as efficiency is concerned never stop man you’re great

[@TaddyDigest]

Wow Robert thank you so much I'm so glad that you watched this video that is so cool that you have the tools and understand how to work on these systems because you are right there are not a lot of technicians or contractors who understand or can work on them.

[@albmarku4379]

The best teacher ever! All the best from Albania 🇦🇱

[@ihg91]

Just a tech trying to learn from Los Angeles. Stumbled upon your videos and they are very helpful . You explain very thoroughly . Always looking forward to your content. Thank you

[@TaddyDigest]

Awesome Ivan, thank you so much for watching my friend I'm glad to hear 😊

[@hrdworkin7633]

Excellent video with just the right amount of detail to properly service a mini-split. Thanks

[@TaddyDigest]

thank you 😊

[@JasonEdgar-gr6pi]

man this is really nice information. Im trying to dual ticket into HVAC from electrician and stuff like this really helps

[@keithm2824]

I'm working in south Florida.. excellent video and break down of equipment.. you are exactly right when it comes to installation ..90 percent are installed wrong.. that's what I find on service calls.. tech's need to spend some time on start ups..

[@TaddyDigest]

I agree Keith if text spent more time on startup than they could find the problems and fix them early instead of the problems creating more problems down the road

[@elifire4147]

Are you near Naples? Can I schedule a troubleshoot and cleaning?

[@brianwhite9500]

Outstanding information. You are truly one of the technicians like myself who are passionate about HVAC and obviously enjoy what you do. I would appreciate any future info on troubleshooting mini splits including the high efficiency ducted systems. Also maybe some general symptoms that a Mini split is overcharged either the sound that the compressor is making. I have been doing all types of HVAC/R work for over 20 years with a background in electronics and seriously, I am impressed with your videos so definitely keep it up.

[@TaddyDigest]

That's Fantastic Brian Thank You I truly appreciate you taking the time to watch I do love what I do

[@ELECTRICMOTOCROSSMACHINE]

You are the best so far. Well done. I am putting in a used DAIKIN I traded for some work. It is a nice unit, my MO is to learn everything there is about my subject, having fun with it. Keep up the good work.

[@k2silence]

Just started with a new company last year and I have about 100 mini splits in elevator rooms to take care of. This got my feet wet with them! I’m off to buy a 5/16th adapter in the morning

[@TaddyDigest]

Awesome so Glad you Watched 👀 😊

[@TreverRacer]

Like the presentation 👌 Very helpful, and comprehensive. Thanks you!

[@brentonroubo7054]

Hello from Maine! I install Samsung RLC equipment every day and you’re doing a fantastic job man! Keep up the great work.

[@TaddyDigest]

Awesome! Thank you!

[@hugoguevara3864]

Thanks for sharing your knowledge

[@TaddyDigest]

My pleasure

[@JessYalyson]

Great Skills You've Gave Us for some of us at HVAC Techs. Thank you so much.

[@TaddyDigest]

Glad you're here my friend thank you

[@michaelclark5531]

Very good video explaining how mini spit works

[@TaddyDigest]

thank you 😊

[@andydepiazza2142]

Great thorough vid man! Appreciate ya taking the time!

[@ranckie5055]

Great video on stressing the importance of a proper installation. There are far too many You Tube videos that fail to stress how important it is to have proper flares on the tubing, doing a proper evacuation using a micron gauge and hopefully pulling the line set down to around 200 microns, using a good sealant like Nylog on the flare faces, pressure testing with nitogen to at least 350 to 400 psi and doing a leak test, and finally, using a torque wrench to torque the nuts to factory specs. I'd bet that many of the bad compressors you've encountered were failing due to the corrosive refrigerant caused by a poor evacuation that left moisture in the system, which caused the acidic condition. Some folks just have to learn the hard way.

[@cbretz2578]

Very cool of you to make this educational tutorial!!!

[@richardauguste5467]

Definitely an informative lesson on inverter split units... wonderful.

[@alphabears6342]

This is very helpful. We have a mini split heat pump from LG that has a compressor issue. I was looking for a contractor and a capacitor but could not locate neither. This units are very different than what I am used to.

[@dorian1989ca]

Thanks brother, this really helps me specially being a new tech in the field. Again appreciate your content.

[@TaddyDigest]

Thank you my friend I really appreciate you watching Please like and subscribe

[@dchambers4717]

Never mind, I joined!! I’m a believer! Hats off to you my man! Now I need get to work Oh I’m in Maine and it’s about 25°F. If that matters

[@TaddyDigest]

Awesome thank you so much for joining Here's my email [e-mail] I've got a bunch of guides I can send you

[@dchambers4717]

Ok Mr. Fuller. Thank you so much

[@DennAss1974]

Nice video! I will follow you... Just some small remarks: L/N to F1/F2 on ODU is not protected, it will cause PCB damage, between ODU and IDU it is protected (as far as I know). The F1/F2 is NOT polarity sensitive (as far as I know). I am a service tech in EU, please check via Samsung HVAC. Compressor windings to earth (chassis) resistance must be checked with using an insulation tester (400-500V conductivity test). :)

[@TaddyDigest]

Awesome Thank YOU for Your knowledge

[@howardblasingame7961]

Outstanding tutorial. I am an Electrician & I installed 3 Minis at my home in Missouri. A 12,000BTU Aux is displaying P6 in heat mode & the indoor air handler blower is not operating. I will be following your suggestions & attempt the repair.

[@Sesamestreet9080]

I think that’s a low refrigerant code

[@kuliz9429]

Francis Rivera from NYC I joined Hey bro am in level entry right am a runner for HVAC technicians have my EPA and just trying to learn new ways and sufficient ways to get the job done dope video

[@robin6296]

Hey men, thanks for the vids. Im from Holland and watch your vids every Day.

[@TaddyDigest]

Awesome, thank you!

[@jamescollins8148]

You’re awesome Bro! Thank You!

[@TaddyDigest]

Happy to help!

[@TonyHoanz-vc2pq]

Thanks for sharing. I’m Tony from Houston

[@TaddyDigest]

Thank you for watching tony

[@djarmol42]

Thanks for your videos! I joined. I tried Samsung last year and had a bunch of issues. Anyways, keep up the great content!

[@TaddyDigest]

Thanks for the sub!

[@JuanVelasquez-b3h]

Thanks so much for all you teach Tadd wow amazing!

[@TaddyDigest]

You're welcome my brother

[@gpowerdragon9852]

is the best video's So Far on this type of units one question on my specific S09AF UH0 split ac unit it's information is not so easy to come by in terms of repair support info like the numbers for testing components on older LG from 2016 it's like the repair ability of a car nice plugs everywhere and diagram

[@j.c.6585]

I joined. I'm a handy guy looking to figure out problems for my clubs two units. Codes on two.

[@enriquehvac6004]

Very informative video. I learn a lot from you and others on KZbin. Keep ‘‘em coming sir 👍

[@TaddyDigest]

Thank you brother

[@skipsaunders5974]

Around 26:30 you mention water running down a wall ... caused by a drain issue. This issue can be horrendous if the installer of a multi-head system decided to link two drain pipes together before the pipes reach the outside of the building. If you blow on the outside pipe, the non-clogged drain will spew liquid and gunk all over the customers room. If you suck on the outside pipe, you might collect the gunk and water from the good head unit, but the clogged one will remain clogged. Do not allow an installer to link the two drain systems before the pipes get to the outside. You should have one drain pipe for each indoor air handler.

[@b3d3g69]

EXCELLENT VIDEO!!!! ONE OF THE BEST I'VE SEEN(IN 10YRS)... Keep up the good work and I will be checking out your other videos!!

[@TaddyDigest]

Awesome thank you so much for watching really appreciate you

[@trinito97]

I wish manufacturers would make this things easier to access parts

[@TaddyDigest]

Me too

[@ikecrook1450]

I'm doing the ozone treatment in Southern Cali with the nucalgon system

[@mikabrowne4122]

Well done Video

[@eduardorosales514]

Thanks very good information to learn more about this equipment, thanks so much

[@TaddyDigest]

You're welcome, my friend

[@robertsalas3406]

I’m robert from fremont California and I’m installation on mini split and like knowing more about repairs on mini split

[@TaddyDigest]

got it thanks for watching Robert

[@bormorzx]

Very good education video. Question?! What’s the probe u use on the multimeter to check very small sensors

[@TaddyDigest]

here are some micro leads amzn.to/3u2xbHP

[@arnoldcamacho8512]

This video was very helpful. I joined . Have a lot more questions

[@TaddyDigest]

Glad it was helpful!

[@gaminghubshorts2047]

taddy brilliant channel teach us how to install ductless vrf systems great content man best i've seen

[@TaddyDigest]

Thanks, will do my friend

[@frankamaral3947]

excellent information cant get it any better eazy to understan

[@TaddyDigest]

Thanks so much Frank I really appreciate you watching Please hit the like button

[@user-ql2bz8on7m]

I was wondering if I could have access to the mini split guide you were talking about

[@TaddyDigest]

Absolutely Thank you so much for joining Here is my email [e-mail]

[@bradburwick2049]

Hey I love your videos. Very helpful. I am new member and I am in need of help please. I am disabled and live on fixed income, so I tried installing a Gree mini split,Long story short. I have power reading at indoor unit,but display is blank. No lights or error code. I think it’s communication wire. It’s 100 volts ac. Less then 1 volt dc.

[@TaddyDigest]

Thank you Brad I really appreciate you watching my videos definitely click the join button to become a member and then send me a email Join this channel to get access to perks: kzbin.info/door/uMyjTVlkM4xZ5z_eSyoB1wjoin Wanna Learn more about hvac? Check out my hvac tips for technicians playist. kzbin.info/aero/PLVjetZt5xgenmO76adHwb2ctyeBIFKUus

[@Jesus-bs5fl]

Wow. Amazing job explaining!

[@TaddyDigest]

thank you my friend ❤️ 😘 💕 ☺️

[@johndebrock2153]

So yeah, that's exactly what I was looking for, thank you for your help

[@TaddyDigest]

You're welcome thank you for watching Please hit the bell and the like button

[@MrMultitool]

Absolutely great video. I have done very little with mini splits but I have a feeling I will be in the future.

[@TaddyDigest]

You can do it! Thanks for watching my friend.

[@Imisaac3206]

Thanks!

[@TaddyDigest]

You're welcome. Thank you so much for watching

[@gonehere4330]

your awesome man!

[@TaddyDigest]

Thank you my brother

[@emac1111]

Very good explaning. Thank you Taddy.

[@TaddyDigest]

Thank you 😊

[@miguelrasmijn4491]

thanks for sharing very good video it helped me alot hello from Aruba

[@TaddyDigest]

Thank you for watching really appreciate you Please hit the like button

[@DavidAvila-z9r]

6 Is very helpful

[@ori4640]

Excellent presentation, thanks for sharing 🙏👍

[@TaddyDigest]

your welcome Glad you watched 👀 😊

[@rslhzt6099]

It was great. Thanks for the good explanation

[@TaddyDigest]

You're welcome my friend

[@abrehamkebede7556]

Thank you so much! God bless you.

[@TaddyDigest]

You're welcome

[@jrh86]

Half the battle are parts identification, location, function and likely faults and its all here,,great.

[@jeffbell7309]

Thank you, I just join and would love to receive your lit.

[@stansummers6259]

Do u have a video please how and what Chemical to use to clean or wash the outside coils and condenser thanks

[@dgoode2846]

That was great, thank you.🤟

[@TaddyDigest]

My pleasure!

[@heatncool]

Looks like Tad is spending more time in the office. Starting to pick up some weight 💪🏼

[@jimpodo2159]

Absolutely a great video .Ive got this problem though. Sorry, I am a newb to HVAC so this question may have been covered elsewhere but was looking for some direction. I have a been having issues cooling with one indoor head unit. We have a LG mini split unit(Model# LMU240 ce). We have a total of two indoor units and one cools fine(artcool) and the other does not, blows warm air(standard type). The artcool blows and works fine 44 degrees but the standard one at 77degrees and wont cool. it shows the compressor is on but doesn't cool. could use your advise Thanks Jim

[@TaddyDigest]

Hey Jim I really don't think I can give you advice through the comments that will help you the best that I could if it was over the phone. Or email but here goes It could definitely be the charge. I would turn the units to cooling and the fan speeds to high and then check the charge Then I would proceed to check the sensors in the indoor and the outdoor Then I would check the eev valve

[@michaeltalieferrojr4302]

Great video

[@TaddyDigest]

Thank you my brother

[@larryrichardson5167]

Thanks for this Taddy.

[@TaddyDigest]

You're welcome brother larry

[@austinhightower7139]

How do I find and print off them charts. I joined thanks for all the information

[@TaddyDigest]

click the join button and I will send you the guide 😊 Join this channel to get access to perks: kzbin.info/door/uMyjTVlkM4xZ5z_eSyoB1wjoin Wanna Learn more about hvac? Check out my hvac tips for technicians playist. kzbin.info/aero/PLVjetZt5xgenmO76adHwb2ctyeBIFKUus

[@jessevasquez8323]

good instructional and i like that you removed all the panels to showcase components but when you said i forgot to remove the electrical cover on the indoor unit for the L1 L2 cover that just not right sounds a little shady. keep up the good work but if your going to do a demonstration be prepared to show all of the components even if it is the connectors on L1 L2 just doesn't sound good " I forgot" gotta be be transparent for the new techs trying to learn dent hide anything.

[@TaddyDigest]

I am not perfect I am learning Thanks

[@channelcatchaser9426]

Tad I hate hearing about the problems you've experienced with Samsung hvac.....I hope I don't start having trouble with the units I have out there. Good video

[@lwilliams3285]

Yeah I'm not a fan of them. They don't seem to last here in Australia. I use Mitsubishi and rarely have problems.

[@TaddyDigest]

Samsung had a redesign in 2020 so thankfully I don't have a lot of problems with the newer models but the older models I did have a few leaky indoor coils. I love the new models especially the quantum series now. Thank you for watching Channel Cat Chaser.

[@TaddyDigest]

Hate to hear that L Williams Thank you for sharing this information I did sell Install and service mitsubishi before Samsung just didn't like the distributor and the knowledge to troubleshoot was not so readily accessible to me like Samsung. Thanks for watching 👀 😀

[@lwilliams3285]

@@TaddyDigest i do install them still, in fact I put 4 in last week, but I find on 40 degree celcius plus days they get a lot of compressor overloads, and I tend to oversize my systems a bit for when those days inevitably come. Probably different environment to where you install, it gets dry and very very hot here.

[@DWAYNE2ism]

Great content. Keep them coming

[@TaddyDigest]

Awesome thank you Dwayne

[@jasonrice2148]

Mini split head units have a common problem of making a loud (if you are trying to sleep) pop whenever the cooling cycle kicks in, as something inside like the blower motor housing or drip pan contracts from the temperature change. I haven't seen a fix for this anywhere online (i have a Mitsubishi that does it). The manufacturer considers it "normal operation", but it really is unacceptable, and it is a source of much buyer's remorse and difficulty sleeping for many people. You would be a hero to thousands if you could find a fix for it!

[@TaddyDigest]

1st I have heard of this I will definitely investigate and try wait investigate and try to find the calls and see what we can do

[@jasonrice2148]

@@TaddyDigest That would be great, thank you! My unit even makes the noise occasionally when the unit is off, because of the temperature of the room changing over time!

[@heatingairservices8708]

great video but exactly is the fuse to the indoor PCB ? on the board or auto reset circuit breaker thanks

[@TaddyDigest]

It is on the board And there is a thermal fuse on the power in block

[@georgetsetsakos6088]

God bless you man this is amazing. Thank you!

[@TaddyDigest]

your welcome George Please share

[@anthonysummers9279]

So after watching this video and your video on changing the coil on the indoor unit, and I’m curious how much of this info in interchangeable with a Haier unit??

[@YankeesFan74]

Great breakdown but I will stand by my view that most mini splits are way more complicated than they need to be as far as communicating and all that stuff. Just make it standard 24 v like a normal split system because in the end that's all a mini split is just smaller.

[@brentmurphy6620]

Thanks for sharing. Keep them coming also can you share where to get the resistance chart.

[@TaddyDigest]

Click the join button I will send you guides and resistance charts kzbin.info/door/uMyjTVlkM4xZ5z_eSyoB1wjoin

[@dmacosta1]

🔥great info.Thank you

[@TaddyDigest]

My pleasure!

[@simonac688.]

Lack of maintenance # 1 👍

[@vw_mods_4711]

Hi some great info in your videos, do you have any on commissioning mini split systems? Would love to get some clarification on what to test on the electrical front, step by step. Many thanks

[@TaddyDigest]

Check out my latest video today it's specifically on installation

[@guitarplayingSQUIRREL]

Great video. I do have a question for the masses though. I have been working on a Lennox mini split and I can’t get it to work. It’s a MLA009S4S-1P condenser. I have three wires going to the indoor unit (2 power) (1 communication?) and of course my line in. I have power at the AH, and the thermostat is working. However, I can not get the condenser to come on at all. No noise, Nada. No error codes either. Any ideas? Pressures seem fine as well. 25:00

[@yulianyrodriguez4484]

God bless you mannn

[@TaddyDigest]

Thank you brother

[@johnnyprotalk3352]

thank you very helpful your video was. i will be following you more i am subscribed .

[@TaddyDigest]

Thanks for the sub!

[@ironeagletrike]

Great video, I am an HVAC tech and contractor who has been out of the field for years but installe(d my own split system in my garage/woodworking shop a couple years ago and just noticed this month that I was low on refrigerant but can't find a leak. Did notice in taking off the caps on the outdoor guage valves a little pressure in them and a slight amount of oil on the flare connections. Would you suggest anything other than tightening them down a bit more. The leaks are so small they are not showing up with bubble leak solution.

[@TaddyDigest]

Yeah I would suggest that you put the refrigera in and then just tighten up the flayers

[@lookoutleo]

Your realy knowledgeable Wish you could help with my Fujitsu mini split. I think the inside and outside units are not speaking to each other. Is it useually AC voltage between red wire and neutral connection on these? Hi from Scotland , I need you to keep me hot :)

[@mitchellhewett7328]

You are the greatest glad I found you in the Florida Keys

[@TaddyDigest]

Thank you my friend

[@LC-qi5ff]

What standing pressure would you expect in say 50F weather? Thank you!

[@angelaadam8376]

Great video it made me join your page

[@WisdomInTheWoods]

Why is there not a low side connection?

[@peterredhead3464]

I joined.

[@TaddyDigest]

Thank You for Subscribing

[@tblackproductions2694]

I joined

[@billy5032]

I dont catch service calls very often on minis but more often than not theres a maintenance issue that causes an issue, specifically, a comm error caused by the little condensate pump reservoir that is full of water.

[@TaddyDigest]

yup your right mostly just maintenance thanks for watching Billy 👀 😀

[@BuddyNika]

Everything is easy with a brand new unit on a table in a garage. And no Black Widows.

[@scottk0623]

Great job, very professional. Thanks for the share 👍

[@TaddyDigest]

your welcome Thank you for watching More coming soon Where are you located

[@scottk0623]

@@TaddyDigest north eastern Connecticut at the Massachusetts line

[@TaddyDigest]

Awesome