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 Aircon Discussion V3, Home Appliance

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celciuz
post Feb 17 2021, 07:37 AM

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QUOTE(ceo684 @ Feb 16 2021, 04:06 PM)
The jelly issue is because of improper drain pipe installation.
The pvc pipe run need to be straight as possible, if its crooked it will be ponding water. Also need to be supported (especially when using low class = class 0 thin pipe) which bend in the middle easily if unsupported over long runs. Class 6 and 7 PVC pipe is overspec but because it is made with thicker wall thickness it doesn't bend easily, for few bucks more.
Drain pipe horizontal runs must have enough slope angle for water to run off.
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I see, ugh didn't expect exposed also got this issue. The pipe goes to the other side of the wall then drain downwards (no horizontal, except... the portion where it joins to the drain pan and travel 6" across the wall I guess).

QUOTE(titanmelvin @ Feb 17 2021, 02:47 AM)
Panasonic also have app. But you need to purchase additional wifi dongle. Dont know how much.

X-Deluxe got Nanoe X and Nanoe-G. 1 thing i like about Panasonic is that you can leave the Nanoe X and Nanoe-G on 24 hours. It will run on fan only consuming a little electricity when you turn off aircon.
https://www.panasonic.com/my/consumer/home-...technology.html

Daikin Smarto got PM2.5 filter and Streamer. I think Streamer is like Nanoe X. I was interested in the PM2.5 filter, but see photo it is so small only, doesn't cover the whole AC filter lol.

user posted image
Saw your old post on cleaning the blower. Last time i used to use disposable chopstick and wet tissue. Lately i used my old electric toothbrush to clean the blower.

In case you didn't know, remember to find shop that is registered with SEDA for Save 2.0 RM200 rebate. See Senarai Kedai Berdaftar:
http://www.seda.gov.my/saveprogram/
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I fitted the Daiso aircond filter as per recommended, so lets see if the build up is still as bad. laugh.gif Back then I used to vacuum through the vertical vanes, use brush but they were never totally clean vs. removing it. That time I took it out cause wife complain non stop... since removed the drain pan, might as well grab the blower too. Oh yeah washing with hose really takes ages -.- every time I spray sure got dirt come out, if only use pressure washer confirm much faster and cleaner likely.

This post has been edited by celciuz: Feb 17 2021, 07:38 AM
celciuz
post Feb 18 2021, 07:06 AM

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QUOTE(ceo684 @ Feb 18 2021, 01:31 AM)
water pipe blockage.. same as puddles on the floor, also grow moss/algae.
for quick solution DIY - pour 1 cup vinegar into the drain pipe (you need to pop off the hose from IDU), wait 30 min, flush with another few cups of water, should dissolve the algae/jelly.
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Thanks! Didn't thought of using vinegar, from what I've seen on my unit the water outlet to the pipe diameter got reduced by the jelly probably why it got stuck and eventually started dripping out. Next time it happens will give vinegar a go first.
celciuz
post Mar 2 2021, 12:27 PM

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QUOTE(keyser soze @ Mar 1 2021, 09:15 PM)
Search for silver ion anti- microbial for drain pan.
Overflow mostly is due to drain tube or pioe clog by jelly.

The blower is not easy to dismantle. You may search YouTube see if possible to find anything. Else, just use brush to slowly remove the dust on blower.
You also can use the foaming coil cleaner on the blower, then slowly rince is of with slow running water. Make sure you protect the electrical parts and the blower motor. If you don't like to play with water and bag then prevention of dust built up is to use those Daiso disposable filter sheet.

user posted image
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Which brands have this silver ion on the drain pan btw? Or at least advertised... Searched Daikin and Panasonic seems their cassette got it.
celciuz
post Mar 3 2021, 09:43 AM

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QUOTE(pigduck @ Mar 1 2021, 08:57 PM)
I need to vent a little and ask questions.

1. I am really struggling to remove the drain pan and the blower wheels from my acs to clean. I have a daikin, mitsubishi and panasonic and none are easy.
2. I feel that a bi-monthly or even a 3 month self-service should eliminate any 'surprise' leaks I might get but I'm not sure now. I feel a 6 month or 1 year service schedule should be good enough - I feel it's mostly the drain pan and blower wheel that might be most difficult to clean. Spraying coil cleaner is not hard and washing the filters is easy
3. So I tried to use a cleaning bag but the water was just spilling everywhere. I threw away the bag. I have tried it once or twice before and usually it's very messy. I use the manual spray and even then it's messy. I tried cleaning the blower wheel today too but it was disastrous.

Questions
1. Which are the easiest acs to clean? I feel like I need to change all of them so that I can really do it. My Daikins are the newest, from 2015 and 2016 but even those are a pain.
2. It's usually my drain pan hole that leaks and I can't even see where the hole is to clear it. How do you clean it?
3. Do cleaning bags work?? Which ones do you recommend? What kind of spray do you use and should I be investing in those pressure washers? Or should I not go through the hassle and just use a coil cleaner till my service schedule is due?
4. Are current airconds as hardy as the old york and carrier acs? I just feel I should get the R32 refrigerant ones but mainly I want easy access to the blower wheel. Also I want smart acs but do these tell you when your acs need servicing and the energy consumption?
5. Does vacuuming work for you? Is that how I can get the dust from the blower wheel??
6. What about if I just used a brush to clean?
I'm just upset that I can't do a simple thing like remove the drain pan or the blower wheel... help.
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1. I recently #yolo attempted to clean my 2014 Panasonic (well took me 3 hours trying to figure out and watching videos), but second unit was significantly faster. The Mitsubishi Mr.Slim JP and GR has this vertical vane removal, likely provides easier access to the blower. Then I also read the Daikin has removable drain pan right? Should be easy to remove too?
2. Drain pan hole, usually left or right side depending where the outlet is... when you remove drain pan, you need remove the pipe for sure you will see the hole.
3. Yes, I use cleaning bag... just hang on it then drain to a bucket.
4. No idea on this since mine not one of the newer models.
5. I don't have the proper tools, and the vertical vane always get into my way.
6. Well... same thing IMO the vane gets in the way.. that's why the Mitsubishi removable vane seems rather handy here.
celciuz
post Mar 23 2021, 08:29 AM

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QUOTE(ceo684 @ Mar 22 2021, 11:35 PM)
Hmm Pana previous batch alot seem to have the same problem = https://forum.lowyat.net/topic/2005961/+40

Nowadays it's hard to tell because even in same brand, series wise can differ a lot. Sometimes the previous gen 1 R32 inverters are better than the newer gen 2 R32 inverters, spec wise.

Daikin you should not buy the cheapest range. 2nd up cheapest is OK.

JCI Hitachi I can say the previous batch CJ series was designed with very good spec.. CKM lower spec but still reliable.. there are 1hp inverter R32 for 1099 from Lazada which is actually a good deal as the prev range CJ is better btu spec than current CKM spec. Properly designed AC for that price, 2/10 warranty. icon_idea.gif

Mitsu Mr Slim is OK. Between JP JR JS see spec sheet cos some series better btu.

Sharp also OK for value for money reliability, AHX9VED2 series not bad, also 9700btu design. Newer AHX9XCD 9200btu design.

There are certain scenario like 2hp cassette that it is more optimal to use a R410 inverter simply because that price only can buy a R32 non inverter. And the R32 inverter simply cost around 800-1000 bucks more which is hard to ROI even with inverter savings.
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Speaking about cassette... price I got from supplier,

Daikin 2HP R32 inverter RM4330
Daikin 2.5HP R32 inverter RM4500
Daikin 3HP R32 inverter RM4760

Mitsubishi 2HP R410a inverter RM3450
Mitsubishi 2.5HP R410a inverter RM3680
Mitsubishi 3HP R410a inverter RM3950

Installing 1x 3HP (living hall), 1x 2HP (dining hall) and 1x 2.5HP (master bedroom). Looks like cheaper to go with the Mitsubishi option here, R410a vs R32 inverter... big diff? or not enough to cover the differences anyways.
celciuz
post Mar 23 2021, 09:46 AM

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QUOTE(ceo684 @ Mar 23 2021, 08:36 AM)
Cassette AC the 4way IDU has a  blind spot right below the IDU.
Suggest to take the round flow type for more even airflow pattern.
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Round flow type? Which brand have this? Is it like the Samsung VRF 360 (saw this in one of the YouTuber's home LOL).
celciuz
post Mar 23 2021, 10:45 AM

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QUOTE(ceo684 @ Mar 23 2021, 10:34 AM)
Daikin, Acson got, i think Pana might have. Its still squarish not like VRF 360 , IDU fins are round shape.
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Like this?

https://www.daikin.com.my/daikin_products/fcf-c-series/

I was thinking to get the Mitsubishi R410a inverter to save cost a bit haha... and able to use my existing piping... these Daikin FCF 9.52 and 15.88 from 2HP onwards.
celciuz
post Apr 15 2021, 04:42 PM

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QUOTE(dannyw @ Apr 15 2021, 12:01 PM)
Will it have any impact on blower? I been using it for few years. Nice and clean coil inside.

Recently after i clean with water, maybe not enough time to dry up, then I close the cover back.

After that turn on the aircon have some smell, and notice some white powder on the coil after few weeks. Not sure is mold or not?

I have clean it up and remove the extra filter to monitor.

That's why i wonder should I still continue apply the extra filter.
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That Daiso filter is crazy good, after 3 months usage my inside filter is still clean and the fans are in clean state. Usually within 3 months, my filters all clogged up and the blower starts to accumulate. About 6 months then I need to clean the blower already else no wind.
celciuz
post Apr 15 2021, 07:20 PM

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QUOTE(dannyw @ Apr 15 2021, 05:26 PM)
Alright, thanks for info.
Yes, i almost no need to clean the coil inside as always clean. I only vacuum that extra filter. Well, maybe i keep using too long, time to replace.

Btw, you add on the filter itself or cover up the whole air intake on the unit?
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My first time using, so I actually cut to both filters size... but think about it, its easier to just cover the entire both filters with single piece.
celciuz
post Apr 15 2021, 09:58 PM

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QUOTE(jutamind @ Apr 15 2021, 09:33 PM)
Installing such filter will reduce air flow but over long term will it do harm to the indoor unit cooling coil?
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No idea, I just started using it. Reducing the dust, why would it harm indoor cooling coil?
celciuz
post Apr 21 2021, 01:06 PM

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QUOTE(hendry91 @ Apr 20 2021, 10:40 PM)
Great, so I buy Pana 410A 24k btu won't regret right? Haha
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Since we are on the cassette topic, what about the Mitsubishi r410 inverters? Even cheaper than the Panasonic.
celciuz
post Apr 25 2021, 09:29 PM

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Paging for sis ceo684, my neighbor was telling me... he did re-wiring of his airconds cause his installer told him its better to wire from 20A switch --> IDU --> ODU instead of the wiring developer gave which was 20A switch --> ODU --> IDU?

Would it make a differences? So far I got quotes from 2 shops which came to see... none of them commented on this wiring topic.
celciuz
post Apr 26 2021, 06:38 AM

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QUOTE(ceo684 @ Apr 25 2021, 10:45 PM)
Usually power goes to IDU nowadays but it depends on the specific aircon model tho, older ones tend to put the master at ODU. Usually the power supply goes to IDU as master controller (nowadays) and power fed to ODU by IDU by a connecting cord.
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sweat.gif my neighbor told me that from supply to IDU this way the aircond connection more reliable... then I checked with the electrical subcon, was informed the cassette mounts are supply to ODU while the wall mounts are supply to IDU instead.

Is it cassettes are usually supply to ODU? or maybe aircond units nowadays can do either configuration?
celciuz
post Apr 26 2021, 05:49 PM

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QUOTE(Momo33 @ Apr 26 2021, 12:15 PM)
No they cannot  do either configuration  . 

either the IDU or ODU  will be the  power control  depends on the design . electronics design. 
best to check on the installation guide for the AC .
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QUOTE(Max @ Apr 26 2021, 12:38 PM)
Depends on aircond power/hp. Some high hp aircond need 'direct' supply for ODU.
Most probably cassette is hi hp type, so need direct power supply for compressor.

Something like this.
» Click to show Spoiler - click again to hide... «

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QUOTE(MystiqueLife @ Apr 26 2021, 01:15 PM)
For any A/C with 3.0 HP and above, usually power goes to ODU.
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QUOTE(ceo684 @ Apr 26 2021, 02:10 PM)
It all depends on the AC mfg, some Daikin cassette 2hp also power to ODU.
It is normally shown on the spec sheet or installation manual.
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Thank you all for the info notworthy.gif , my neighbor sounded like he re-wired his cassettes points to IDU instead of ODU... make me panic if my original wiring would work. The wiring are for 3HP, 2.5HP and 2HP cassettes... total 4 points.

celciuz
post Apr 27 2021, 06:58 AM

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QUOTE(ceo684 @ Apr 26 2021, 10:10 PM)
Hahaha it is best to follow per your own AC unit mfg installation spec as the mfg design was not just an arbitrary (suka suka spec) but they will have taken all the relevant control, power draw etc into consideration. smile.gif
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The developer's subcontractor for aircond sells Mitsubishi... so I see also the showroom all Mitsubishi aircond and wall mounts, and the pipe specs are for those. Which also means the smaller cassette areas can't use with Daikin's R32 inverters even the 2HP requires pretty big pipe size sweat.gif
celciuz
post Jul 18 2021, 11:16 PM

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Surveying cassette aircond for my living hall, developer provided 9.52/15.88 piping for the hall... the showroom was using 3HP, but I'm considering 2.5HP or 2HP cause I kinda "partition" the area a little bit so place is a bit smaller. But when I was comparing the 2HP and 2.5HP... the 2HP seems like very close to the 2.5HP peak power? but is cheaper and even more efficient. Am I missing some important info perhaps?

user posted image

But comparing the specs here... looks like the Daikin 2.5HP is pretty underpowered vs. Mitsubishi's 2.5HP right...
user posted image

celciuz
post Jul 19 2021, 11:52 AM

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QUOTE(ceo684 @ Jul 19 2021, 02:31 AM)
Add Pana to the comparison. Their cassette btu rating also not bad.
Yes the stepping in aircon models are not linear..meaning not all the steps in the staircase are same height.

That's why if u wanna dig into it, easier to classify by 9k 12k 18k 24k 30k btu classes rather than so called 1.0 1.3 2.0 2.5 3.0 hp

Not all series of D are great performers. Same as buying 316i for the bimmer badge only.
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FCF is the R32 inverter (the only brand I see offering R32 inverter for cassette), which I was thinking it should have better performance than the R410a inverters (Mitsubishi and Panasonic). But quite surprised with the figures... but I'm wondering if the BTU is a typo, cause the nominal and max is same figures.

Between Mitsubishi and Panasonic, gonna go with Mitsubishi for the price is much more competitive. The Panasonic R410a is even pricier than the Daikin sweat.gif

user posted image
celciuz
post Jul 21 2021, 09:34 PM

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QUOTE(lyt25_1234 @ Jul 21 2021, 01:18 PM)
I have a cassette ac at home and it's freaking eat electricity like there is no tomorrow.
So i advise not to install one at residential...it's more for commercial.
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You mean when compared to the equivalent wall mount, the cassette mount takes up more electricity?
celciuz
post Aug 9 2021, 10:01 PM

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I'm planning my aircond position for the living hall, dining and dry kitchen area. It is an open space about 520sqft size, and there's also the stairs where I guess air would go up, since since cold air stays below, not so big impact right?

Developer provided 2 cassette AC points based on the showroom specs are 9.52mm,15.88mm (3HP) and a smaller 6.35mm,12.7mm (2HP).

Last time I managed to snapshot their MnE the position somewhat like this... showroom don't have ceiling fans one (not practical for me haha). I will be fitting fan... but is 2+3HP optimal? I remember when I visit the showroom (it was the launching day la, aircond wasn't even close to being cold). I usually like to set about 23-25C.
user posted image

One of my neighbor did 1x 3HP to cover the entire space... he said was "ok".

I'm thinking like this... red for the fan, black for the aircond spots. 3HP at the living hall area.

user posted image
celciuz
post Aug 10 2021, 12:33 AM

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QUOTE(ceo684 @ Aug 9 2021, 10:10 PM)
Sizing should be good but casette has 4 way and 360 blower one.. for the dining area one maybe u might consider 360 one as the diagonal blind spot could mean no direct air to the chairs..or 4 way could be good so food wont get cold so fast.
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Thanks for the input!

Is this the 360 degree?

Daikin FCF
user posted image

or one of these...

Samsung
user posted image

The other brand I was looking at is the Mitsubishi PLY, definitely not 360...

user posted image

Panasonic neither...

user posted image

Problem with the Daikin 2HP is... it requires the thicker piping... which the developer didn't provide there... that area kinda able to fit the Mitsubishi 2HP r410a inverter.

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