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Diagnosing Problems With An Inverter Mini-Split With Almost No Information To Go On!
Рет қаралды 17,118
Күн бұрынIn this video I come across an old Midea Inverter Mini-Split that wouldn’t start up! I had only a generic manual to go by! #hvacguy #hvaclife #hvactrainingvideos #airconditioner #hvactechnician #hvac #furnace #hvacinstall #hvactroubleshooting #heatpump #minisplit #inverter
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@mxslick50 4 ай бұрын
The ohms bouncing around in the tenths is normal, the slightest change in probe pressure or tiniest amount of dirt on the terminals or probes will cause the bounce. Another note, all mini splits out there regardless of brand are made in only a few factories. You can generally find parts by searching the numbers found on the boards, etc.
@elijahgoodman3140 4 ай бұрын
Very informative. Thanks.
@ericknutson602 2 ай бұрын
Welcome to the real world of mini split. Must have patience..And good mirco board trouble shooting skills.
@dew117 4 ай бұрын
On inverter board.., in some cases especially on Daikin, there is a mkp capacitor which will always be weak or dead after some years of operation. It is a rectangular box shape . .. around 20 uF I guess. The symptom if this cap goes bad is like the compressor tried to rev up and give up. I would check it before going deeper to ipm. It is quite easy to replace with some soldering skill. I hope it helps you in some ways.
@kens.3729 4 ай бұрын
Thanks for Helping take Care of the Residents at the Trailer Park. 👍🙏
@JAWmankato 4 ай бұрын
All minisplits need surge protection.
@jericosha2842 4 ай бұрын
Agreed. We learned the hard way.
@TomLawson05 4 ай бұрын
Curtis great troubleshooting a real head scratcher look forward to repair thanks for the video
@HVACGUY 4 ай бұрын
You bet
@scoobtoober2975 2 ай бұрын
These systems are going in just about everywhere. My house. Elderly home next door. Each room got one this winter. It has to be because of heating option. Quiet and efficient. Window shakers are garbage heavy and block the one window in their room.
@kens.3729 4 ай бұрын
Looks like you have a little HVAC friend in Training. 👍🙏
@robalexander7348 4 ай бұрын
A tricky fault Curtis, i look forward to the final repair if you get to do it 🤔 Au
@iamnoone. 4 ай бұрын
I would have gone over to the other unit, took the board out of it, and put it in and see if that fixed it
@rolytech212 4 ай бұрын
How about doing that and shorting the other board too because something else is causing the problem…. Am sure the customer is going to be happy 😂
@iamnoone. 4 ай бұрын
@@rolytech212 it was sarcasm
@rafaelrodriguez6400 4 ай бұрын
😅
@cwk_619 4 ай бұрын
I like her look..."What you talking about Curtis"...
@stevencossaboon3237 4 ай бұрын
Nice work as always Curtis.
@HVACGUY 4 ай бұрын
Thanks
@danwesten2771 4 ай бұрын
With those it's likely always the boards in 1 section or another unless your indoor unit blower doesn't work. I don't replace just 1 board. I do them all at once except the inside unless it needs it. A communication issue usually points to that but may not.
@THEZ-cp4lk 4 ай бұрын
a while back i asked my local HVAC guy if it was a prudent thing to install mini-splits across my home. I live in one of the hottest places in the nation when in the summer it reaches well over 118 degrees. He told me scrap the mini-split and go with the central 5-ton unit which I did. Good decision. !!
@mxslick50 4 ай бұрын
Mini splits aren't right for everyone, but if it's just you and your spouse in a large house, it's wasteful cooling the entire house of unused rooms. Now if you have a full house of kids, central is the way to go. The other advantage to mini splits is programabilty, setting individual rooms to desired temps as needed. Hard to do, expensive to install and operate with central forced air. Professionally installed, name brand splits with proper surge protection can last as long, or longer, than a central system. Bonus: if one split goes down, you don't lose cooling or heating in the entire house.
@andygomez9025 4 ай бұрын
When you say you installed the central 5 ton, did you install a 5 ton inverter unit that kinda looks like this mini split? like with the fan on the side instead of the traditional “trash can” condenser? If so is it worth doing in a place like Arizona with temps around the 118 also?
@THEZ-cp4lk 4 ай бұрын
@@andygomez9025 I have a inverter five ton heat pump. It works like a charm in the south west corner of California. Here it averages around 117 and up to 120 sometimes.
@PhilipNation-xm5lh 4 ай бұрын
I find leaks and low charge on most of my mini split calls. Second to that, it's usually board related. I had one the other day that ran but would not cool or heat. The liquid line was icing just after the EEV. Ohm checked the EEV and found it to be electrically sound. A little closer look at the board revealed some burned legs of one of the chips that likely controls the EEV. Error code says IPM board failure so I told the customer it needed a new board. Daikin wanted $980 for the board. Unit was 3 years old and would have been covered under warranty IF he had paid for professional installation. So, he elected to go back to the online retailer to buy another 1.5 ton unit. Lather, rinse, repeat. I think I am going to refuse to service units that are installed by non-licensed individuals. It's so frustrating.
@Zeviticus 4 ай бұрын
People putting in their own units, and just buying a new one when it breaks is getting more and more common.
@Burmn 2 ай бұрын
What is frustrating is $1000 for a circuit board. Parts should not be made out of unobtanium
@Chainsaw600 2 ай бұрын
It is ridiculous. It’s as if the manufacturers are deliberately building disposable equipment with the hope of not having to distribute parts.
@davidingram7540 4 ай бұрын
Had one get hit with a power surge during a storm. It was one issue after another. Had to fix one item to find it took out other parts.
@gregwalker731 4 ай бұрын
I would think with the cost of the service call and parts it would be cost effective to just replace the outside unit. Just a thought.
@38mullet 4 ай бұрын
tough one buddy no name mini split good effort
@DevinHVACInc 4 ай бұрын
If u do get it, I’m curious to know if the board fixed it.
@jw3843 4 ай бұрын
I had a frog that took out a mini split once. It fried itself and the board. Lucky for the customer it was under warranty because those boards are not cheap. I think the unit was less than a year old. The only other time I have had a major issue with an inverter compressor was on a carrier and was told by the tech support that we needed to get a compressor and inverter board, change the board first and then if the compressor is bad, change it.
@petergervacio3669 4 ай бұрын
With this type of units, its the correct way of checking
@vernhackett5603 4 ай бұрын
This is why I don't take mini split calls.
@petergervacio3669 4 ай бұрын
With these type of unit, this is the correct way
@xFSUxBlack 4 ай бұрын
That little one is an apprentice in the making. Asking questions and picking up random tools lol
@jthonn 4 ай бұрын
It looked like no one has ever told her, leave that alone. The look on her face was something.
@jthonn 4 ай бұрын
I was just talking about the boards. Some are simple, those are not. Those big caps on the board, just plain stupid. How are you suppose to check them and replace them? Buy the whole board, no choice unless you break out a soldering iron. Who has time for that? It's an a/c, works on all the same principals. Well it is what it is. Thanks for the video.
@kg4muc 4 ай бұрын
I’m placing my bet on the module. Probably using mosfets to control speeds and probably not cooled the best
@scotthogan6891 2 ай бұрын
Might have to take the board out and flip it over and see if there's any burnt capacitors I have to fix the board itself if you can't get a replacement
@aznboycols 4 ай бұрын
It may be a longer than usual video, but, it's interesting on how you problem solve the malfunction.
@redneckways1617 4 ай бұрын
By your customers description and your diagnosis…I believe that the compressor has internal damage….maybe not…I have been wrong before…
@scotthogan6891 2 ай бұрын
Can do a continuity test to see if it's open or closed
@brianclark803 4 ай бұрын
Granted he's taking an educated guess.
@JesseDoesHVAC 4 ай бұрын
60% of the time its the PCB failing every time
@timsky99 4 ай бұрын
there's actually a tool to test inverters, I was hoping you'd check the bridge diode as well....just to tick that box.
@AndyFromNH 2 ай бұрын
Lol. If it's not dogs, it's kids. Lol
@user-ul5ed8jd1q 4 ай бұрын
Why didn't the error code appear on the control panel? Strange.
@WORLDBOSS00 4 ай бұрын
Hay… Curtis great Job… What type of Body camera setup do you use????
@HVACGUY 4 ай бұрын
GoPro
@petergervacio3669 4 ай бұрын
Try and unplug the fan motor and run it with the compressor
@rolytech212 4 ай бұрын
How about on the bottom for the data plate…
@caru3257 4 ай бұрын
I call the manufacturer and avoid most headaches on those.
@Wayman_Simmang 3 ай бұрын
Those splits are a real pain to work on and get to.. No Name units or very little info for diag.. Nightmare. I am thinking we are going to see more and more of these..
@scoobtoober2975 2 ай бұрын
Same factory as aciq looking. Midea is probably the maker
@user-oz6xr4wo7d 4 ай бұрын
You can check the connection voltages of the compressor by wiring the connection to the voltage information compressor installed on the DCV compressor, also either. The fan of the board is integrated with the motor and it is a dcvolt ,,, you can make a tool to check the infrader board 3 lamps, 220 volts connect 3 parties together and 3 ends of the other connect it on the wires of the inverter compressor to make sure that the rose works
@user-ju2ci3lm4v 4 ай бұрын
Call tech support
@davidb2438 4 ай бұрын
Just buy new, the call cost more than the cost of outside unit.
@Miketime969 4 ай бұрын
Clueless with minisplits man , stick to the regular stuff
@user-oj1ri5ld3x 4 ай бұрын
My god look at the bran wow
@TheKawasakiBros 4 ай бұрын
those are 8mm
@stevea6722 4 ай бұрын
8mm = 5/16
@kevindschlotzhauer9299 4 ай бұрын
@@stevea6722 7mm
@jamierushing 4 ай бұрын
Hi bro from west Alabama
@HVACGUY 4 ай бұрын
What’s up?
@jamierushing 4 ай бұрын
@@HVACGUY nothing much
@user-oj1ri5ld3x 4 ай бұрын
Why so complex
@NewDestinationEng 4 ай бұрын
It's a multisplit so it has to be 'complicated' to manage fluid to all 3 indoor units according to each room temperature VRF is way more complex than this one, still very fun to install and work on them
@tomclements7590 2 ай бұрын
Minis are junk
@richardbartlett6932 4 ай бұрын
Compressor wont run so tests crankcase heater for earth fault Sees condenser fan running so checks board to see if its got power Compressor wont run, spends ages testing resistance on sensors Turns board over goes "hmmmm" refits board. Everything telling me you never actually diagnosed anything so just ended up guessing "l think" what the problem is.. you might get lucky, you might not... Buy a purpose made inverter compressor checker tool to increase your odds of achieving something If l was the owner watching this video I would refuse the invoice and be looking for a properly trained tech who can actually diagnose faults instead of just wasting time and money up a step ladder Good luck, no one is an expert at everything so better stick to the wind n tin basic stuff or spend decent time watching proper mini splits training video's before accepting that call 👍
@jesrovalenzuela1346 4 ай бұрын
😂😂😂😂
@GoPappy419 4 ай бұрын
Building a new 1600 to 1800 sqft ICF home in the next year in Texas that will be fairly tight. I was considering going with mini split but after seeing many different videos like this one I’m not liking the complexity, reliability and cost of repairs.
@mxslick50 4 ай бұрын
A properly (read: professionally) installed name brand unit, with good surge protection in the breaker panel or disconnect, will last a long time. And be more efficient and use less energy as well. And a tip: you mention seeing "many different videos like this one". That is not a good basis to say mini splits break down a lot, are unreliable, or too complex. A video about the millions of units that are working would be boring. You will only ever see videos about repairs and troubleshooting. Same as with cars.
@tomclements7590 2 ай бұрын
Stay with central air minis are junk thro away systems, always changing makers and names discontinued models parts discontinued freaking junk
@harryschrysan3183 4 ай бұрын
Mini split inverters are the worst to troubleshoot. And many brands have bad cx service. Cough Daikin cough
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