Ductless Mini-Split: How to Take Apart & Clean DIY (Mitsubishi FH High Wall Series) 

Happy it helped you Maya

Awesome praise, thanks so much!

Wonderful! Glad to have helped!

Dude. Great story. So glad you found us.

You are SO WELCOME. Grace and I love hearing that our vids help people like you!

By knocking noise do you mean like a helicopter?

Great to hear we helped you, Kirk! That’s why we do this!

High praise, thanks for following

Happy to hear- glad you found us bud

Hell yeah my friend!

Great to hear!

✊

You’re very welcome, Todd! Glad you found us!

So glad to hear! Congrats!

THANK YOU SIR

Huh? Where do you have the drain pan draining to? Water condenses on cold AC coils and the drain pain will fill with water.

HELL YEAH JUNICAT

Great advice all the way, Dan. Thanks!

🙌🏽

So glad it helped you, John. I rewatch it every time I have to do it myself!

Thanks Doug!

Try using soap water next time instead of a q-tip!!!

Thank u

What about spraying it down with lemon scented Lysol, in addition to the soapy water?

I used kitchen degreaser diluted with water and a shoe polish brush, wheel like new

Glad to hear it!

Great to hear- cheers

Good tips, thx

Good luck buddy! Be patient and give yourself room!

They break, now what?

NICE

So glad it helped you!

So glad it helps!

HAHA nice

You’re welcome Zoran! Glad you found us.

Yuck! Nice catch!

Glad you found us, and good luck

@@HomePerformance Well, didn't have much luck in convincing them they should be doing the sort of maintenance. I got details on what they consider "maintenance". All it is is a look see inspection to how things are going. If you need anything done of the nature you guys were doing in this video, they will charge you to do it.

Same EXACT situation with us. Paid $400 for them to clean the air filters on 7 units. That's just insane. I called them and asked them why they don't do this level of service. They said, "We'll have our front desk schedule service." Nope. We'll do it ourselves now with this great info and it will be done right. Is there much difference with the MSZ models?

Should be about the same process, Debra- keep it up!

That’s wild because cleaning the air filters takes like 2 minutes and any able bodied person could easily do it

Wonderful, good work

+George Mandler thx for watching and complimenting!

I noticed the same thing in mine. I don't think there's a [reasonable] way. It looks like the only way to get back there would be to remove the coil and dismount the entire unit from the wall. I'm not in love with the design of these things tbh.

Happy to help Paul

Yes, the drip pan is fitted in place and will stay attached if you get it out of the way. Trust me, take the blower wheel out. You want to wipe behind where it sits anyway, and you’ll have gone 95% of the way there already.

Sorry, your guess is as good as mine

www.oasiscoolingheating.com/blog/how-to-clean-your-condensate-drain

I know, right? That’s why we got Mitsubishi involved in the making of the vid- they hadn’t solidified a protocol before then.

Yeah, everything needs maintenance- better this way than sweeping a chimney though! Yes, dripping water is normal, that’s the condensate from the humidity being pulled out from indoors (I’m guessing). No advice for the outdoor coil, I’d ask Stephen Rardon (search youtube for his channel).

👍🏽👍🏽👍🏽

Wonderful, glad it helped.

Glad it helped

Happy to hear it, Michael!

Thank you!

GOOOOOO CRYSTAL

Man these guys are trained to not sat mold smh

Thanks Pete! And don’t feel too hard on these guys- they’re not trained or equipped to do many of the things we explore on this channel, and they run from hot attic to nasty crawlspace all day. One of the most terrible jobs I can imagine, frankly.

@@HomePerformance 100% agreed! These guys see the worst of the worst daily. We need to change the standards of building and stop building vented dirt crawl spaces and unconditioned attics! Not to mention, placing HVAC installs in them, duh! Ultimately though, humans need to stop neglecting their homes…

It’s like shaving for the first time- you imagine you’re about to screw up, but then it just magically works. Let us know how you fared.

Hi Viki- just make sure to brush away all leaves from the backside of the condenser, and spray it down to get dust off the coil. Inside, yes, the stuff is meant to be washed off, either by automatic condensation or by you.

Can tell Mitsubishi too lol

Sounds like a good decision.

Hi, Jonathan. I'm having the same problem. Did you figure this out?

At random yes I did figure it out. I’m glad this popped up on my alerts so I could help. I just pulled horizontally out until it came off. Maybe a slight upward pressure as you need your fingertips to slide it out. There’s a small tab that if in the worst case scenario breaks it seems the unit would still be secure with the screws on the side. This video gives a nice visual of the part and gave me confidence to be a little less gentle. I also did some translating online and it all came to “its held up by a tab” or something. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-VjKi6WOPuCY.html The video is spot on. I found the set screws to be stubborn as it has never been loosened. It eventually came off. The drip pan is hard to get off and once you locate the 3 small tabs it sits on you’ll have more confidence to pull it off. I used the ladder to prop it up so it didn’t hang. The coils were tricky because they sit tight. Once you locate the tabs they sit on then it’s easier. Plus after pulling the wheel out you need to be sure the coils sit on the tab. I was worried it would fall and didn’t as long it sits on the mini tabs on the left. I’m quite the novice in regards to DIY and didn’t want to be stuck with a big bill to clean hope this helps!

Great questions! I’d clean the pump by hand and replace the drain hose if it looks old and crummy. And the clearances are in the installation manual, I’m sure, which you can download online. Good luck.

@@HomePerformance Hey did the cleaning help with the musty smell? Mine smells terrible when it is in any mode

YES, the cleaning will make it much nicer. Do it!

Glad to help, cheers

Generally a good idea to shut down the entire system at the outdoor disconnect, that way there’s no electrical risk

Thx

EXCELLENT to hear, Jayme!

John Thank you, very informative. I currently have a problem with the flappers. They won't open at all with the machine running. could you please advise what the problem may be.

You should refer to your manual for troubleshooting and then hire a Mitsubishi diamond contractor.

Maybe you’re missing a spot- also, try using unscented coil cleaner.

I haven’t heard about foaming cleaners damaging the coil- that would seem to be the only job of such a cleaner, right? You can get one thru any hvac supply chain.

Do you still use that Foam in the video I can't seem to find it anywhere. Wonder if it was discontinued. If not can you give me the exact name its hard to make out the name of it in the video. Or if there is a better one that will get rid of the odor from the coil that would help greatly thanks.

I got a foam cleaner at Home Depot and it cleared the smell away. The smell was only intermittent but now its gone.

Always great to hear!

Do you have the FH series like the video? I did one of mine yesterday and was surprised to see rust on the right side of the coil. Also after reassembly the upper horizontal vanes don't seem to close as flush as the units I haven't taken apart yet.

yeah I do. Mine had some rust on the right side as well.. I think that's common on ductless as most of the videos I've seen have that. As for the vanes, it's not supposed to matter what position you put them back in as they should do a full sweep at startup to orient themselves

@@Cryptic1911 Mine do the full sweep and operate correctly, I just noticed the top vanes aren't fully closed and parallel with the front cover like the one in my son's room which hasn't been apart. I double checked and they're in right, not a big deal just being a bit particular I guess. I think the rust is normal there as well, they should have used stainless steel IMO.

Yeah I wish it was all stainless as well, but it's probably not nearly as good at heat transfer as copper and aluminum.. plus the cost :(

Yes- take it to your nearest Ace or True Value and they’ll match it for you.

Glad it helped you Alden

Glad to hear it, James!

On this newer model, yes, you have to do quite a lot to remove the blower wheel. Hence the vid

Wow! But still better than paying someone $402 per head for sure!! I guess doing it a couple of times will get you there. The drain pan has no screws to remove?

Nope

Thanks CC.

Joe Shearer if you have uv resistant plastics than ok

That was what I was wondering. That and also do the lights make it more difficult to take the blower wheel out as it'll still need to be cleaned.

Interesting idea. Be aware though that the Mitsubishi Manuals have a trouble shooting entry for yellowing of plastics. The cause is exposure to UV light...

Water should not be standing- it means your unit’s not level on the wall.

Just try again, out and in. Don’t crank any screws too hard.

Hmm, I’d try again, making sure the set screw is loose enough, and double check the condition and alignment of everything around the blower wheel.

The same thing is happening to me? Were you able to fix it?

Yes! My advice is just to keep trying! Takes some patience.

Glad you found us, Terry

You’re welcome, glad you found us.

Try it, but you really should be washing the blower to clean it completely- vacuuming can only go so far.

Whoa, sorry to hear- you CAN clean the blower wheel in place with this type of thing: Split Air Conditioning Service Bag with Water Pipe, Wall Mounted Air Conditioning a.co/d/6Kh702p

You need a dehumidifier I bet, not a germ-killing lamp. You’d still have a ton of little germ corpses left in your breathing space.

Wonderful! Stay fit, Dad.