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 Aircon Discussion V3, Home Appliance

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stormer.lyn
post Feb 25 2023, 09:07 AM

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QUOTE(livinginchangi @ Feb 23 2023, 11:32 AM)
.........- short shelf life and ......
You are of course entitled to your own opinion, but if you can comment on the shelf life of a product, I would have to think that you are in the industry, and are now trying to bad mouth your competitors. After all, an end user has no idea of the shelf life as it all happens behind the scene within the industry. Maybe you work in a shop, and it makes more profit to push certain specific brands?

QUOTE
.....My advice for you is to spend more money and get from reputable brands. After all, if you can afford aircond, why not get the best? If cannot afford, get a fan!
*
And who made you the authority on how other people spend their money? And what is the "reputable brand" that you allude to? Something you recommend?

Should anyone follow your "recommendation"? There is no way you have enough experience with all the brands and their models to have a valid recommendation on air conds overall, so what is the point of your forceful, exclamation filled post? Maybe you have experience with your specific install, but nothing more. Unless you are in the industry, of course.

I dare* say that 9 out of 10 problems with air conds starts with a bad installation, or owner error. Owners proudly claiming they saved money by not servicing their air conds at least once a year? Haha, that's where the problem lies! Faults definitely do not lie with the factory production. Can you imagine the factory designing a bad air cond, making a production run of 1000 units, and then having 80% of them returned for faults? That air cond company will soon go out of business. A 10% production failure rate is already incredibly high for a consumer product like an air cond unit.



*I am a Certified Air Condition technician, qualified in Residential and Light Commercial units, but I pulled the 9/10 figure out of thin air as I have not made a quantitative study of the rate. Since I do not take retail, home owner jobs, you are welcome to believe, or not, my post.

stormer.lyn
post Feb 26 2023, 08:51 AM

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QUOTE(mushigen @ Feb 25 2023, 11:00 AM)
Hi sifus, is there any "best practice" or recommendation on the max distance we should place the outdoor units relative to their indoor units?

I know very long black-insulated pipes may not be easy to hide, but how about performance-wise due to cold refrigerant ex compressor absorbing more ambient heat the longer the pipes are?

I would very much like to install the ODU at locations easily accessed for maintenance - either by technicians or  when I DIY clean the fins externally.
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Please have a look at the specific air cond manual you are installing. The manual will state the minimum and maximum distance you can install the ODU using the factory charge of refrigerant. The manual will also state the necessary charge you have to add if your ODU installation is further than the maximum stated. You must follow all the other requirements stated in the manual of course.

In short, far distance possible, you have to add refrigerant according to specifications.
stormer.lyn
post Dec 21 2023, 10:45 PM

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QUOTE(zero721 @ Dec 18 2023, 05:31 PM)
Wanna ask all sifus, if the aircond is bought quite many years ago (like in 2017 or before), which the aircond is not wifi built in, and also dont have wifi module to support wifi function. Any chance or any method can make it wifi enabled?
*
Search your favourite online marketplace for "smart ir controller" or "Broadlink"
stormer.lyn
post Jan 31 2024, 05:14 PM

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QUOTE(Benefon @ Jan 30 2024, 11:07 PM)
Any did vacuum the pipe line before turn on gas?
Mine didn’t do it before

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All installations MUST be vacuumed before the gas is released, no matter the gas type, or the compressor control. (either inverter or ON/OFF cycling) It serves to:
1. purge the tubes of any other gases (vacuuming the gases out)
2. purge the tubes of any water (water will boil off once the pressure drops)
3. check for leaks within the installation (the system must hold vacuum)

Part of the problem is the installer themselves, as there are many, many sub-standard, unqualified ones out there who don't know any better. Cold air means okay already, who cares if problem in 1 year?
But also a bit with the homeowner. Owner always want cheap and fast, how to wait 1 hour for leak test after vacuum? Then will complain why so slow and argue over the cost. It cost time and money to do a proper installation. So end up cutting corners.
stormer.lyn
post Feb 10 2024, 06:05 PM

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QUOTE(caviars @ Feb 10 2024, 12:54 PM)
Any recommendations for 1.0hp AC that can use standard 13A socket plug? Can I buy an inverter model?
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From the power draw viewpoint, all 1.0 HP can run from a 13A point as 1 HP = 746 W. This is an Ampere draw slightly above 3 A. Look at the specifications of the air cond you want; it should state the "Running Current" which is the important metric
stormer.lyn
post Feb 11 2024, 08:13 AM

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QUOTE(Max @ Feb 10 2024, 10:04 PM)
Shouldn't we worried about 'startup current ' than running current?

Startup current usually 1-3 times higher than running current (depends on ac) rite.
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Startup current is higher as you point out. But this is taken care of by the MCB - "B" curve, or "C" curve in response to this spike. Basically, the MCB allows a spike that is higher than its rated current to go thru. This is okay, as the duration is very short, and the wiring can withstand this spike. As a reference, multimeters that are designed to measure this startup/inrush current measure for the first 100 ms only. I have one of these multimeters, and generally by the end of the 100 ms (0.1 s) the current has already dropped to steady state.

Fuses that feed circuits with this startup current are usually denoted with a "T" in front, eg "T5.0A". This is to signify that the fuse is Time delayed, and can absorb this startup current without damage. If it is a glass fuse you can see the fuse wire looks like a spring.
stormer.lyn
post Feb 14 2024, 09:28 AM

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QUOTE(Benefon @ Feb 8 2024, 05:13 PM)
Are you sure for Midea aircon  rclxms.gif  rclxms.gif
Good job

user posted image
*
What are you trying to insinuate with your attached image?
stormer.lyn
post Feb 14 2024, 12:30 PM

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QUOTE(Benefon @ Feb 14 2024, 10:50 AM)
Have you seen before, the cover block almost half of aluminium fins? Low intake air, means that not good for hot weather or indoor temperatures.
The common design was 20% of plastic cover from fan motor only.
*
I think you are mistaking your anecdotal assumption with the engineering design. Midea All Easy Pro is the hidden gem that no one realises, all going on about Pana, and Daikin, and Mitsu etc.
stormer.lyn
post Feb 14 2024, 03:30 PM

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QUOTE(dayalan86 @ Feb 14 2024, 02:59 PM)
This makes disassembly that much easier, however, worry about rattling issues with only one screw holding all plastic in place.
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You know, or you assume it will rattle?

Not trying to argue here, but I would rather not trust reviews based on someone who has never used the product at all, and is just giving their anecdotal assumption
stormer.lyn
post Feb 14 2024, 04:08 PM

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QUOTE(dayalan86 @ Feb 14 2024, 03:53 PM)
I am not assuming nor stating nor giving personal review based on anecdotal assumption that it will rattle, just raising concern if it might rattle as I did use Midea aircond before (at my rented unit), not this particular model; and even that unit had annoying rattle sound from the air cond vane & front panel.  I added Some foam padding here n there did help quiet down the noise.
*
Okay, got it. Thanks for the clarification
stormer.lyn
post Feb 26 2024, 05:05 PM

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QUOTE(AmeiN @ Feb 26 2024, 01:04 PM)
Hi, going to install panasonic CS-XPU10XKH-1 soon, want to ask pakar here is there any minimum length of tubing from indoor to outdoor unit for this model? If there any, i will inform installer.

Heard some model from another brand got minimum length for tubing

tq
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I cannot find the exact installation manual for your model. But most of Panasonic air conds have minimum tubing length of 3 m (9.8 ft) Please have a look at the installation instructions that will come in the package.
stormer.lyn
post Feb 26 2024, 06:19 PM

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Sorry, double post

This post has been edited by stormer.lyn: Feb 26 2024, 06:23 PM
stormer.lyn
post Feb 26 2024, 06:22 PM

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QUOTE(AmeiN @ Feb 26 2024, 05:08 PM)
Noticed that too, but nothing on minimum length. so should be no problem lah, because going to install back to back
This is what the Installation instructions will look like (sorry, you won't be able to read what I attached - too small):
Normally a couple of pages only with the information on mounting, pipe sizes, tightening torque, wiring, best practices, etc.
user posted image
user posted image

Detailed information from the document
user posted image
Hope this helps.

This post has been edited by stormer.lyn: Feb 26 2024, 06:25 PM
stormer.lyn
post Feb 27 2024, 12:05 PM

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QUOTE(Benefon @ Feb 27 2024, 09:28 AM)
In term of inverter, should be much better than hisense or Midea
*
"Much better"? That seems like an extreme claim to make. What criteria do you use to justify "much better"?

stormer.lyn
post Mar 4 2024, 04:32 PM

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QUOTE(voscar @ Mar 4 2024, 02:31 PM)
I suspect he might be from Mitsubishi Electric APAC sales...
Been like watching him bad mouth others and promoting Mitsubishi to the sky.
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I also think so. Or at least is someone in the industry with vested interest in the brand
stormer.lyn
post Mar 9 2024, 05:34 PM

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QUOTE(Exeunt @ Mar 9 2024, 04:30 PM)
Hi guys,
Would like your input, plan to buy copper
For 2.5hp inv daikin, which copper size should i buy ya?
*
Check any Daikin documentation, even the brochure for your model, and the pipe size will be stated
stormer.lyn
post Mar 10 2024, 10:45 AM

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QUOTE(westlife @ Mar 10 2024, 08:36 AM)
Serious? For R32 temperature must set higher to feel the same as the temperature set? Then the temperature sensor must have prob. 🤪
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Take whatever this member says with a pinch of salt. There seems to be a disconnect between the actual knowledge and how this affects air conditioning.
stormer.lyn
post Mar 15 2024, 10:55 PM

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QUOTE(bengyson @ Mar 15 2024, 05:46 PM)
Hi, looking to buy 3HP Aircond to cover my dining, living and dry kitchen area for my landed property. Preferably cassette type. What brand do you recommend? Inverter or non-inverter?

Usage pattern: turn on average 5-6 hours/day
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If the area is very large you are better off using 2 smaller units as the spread from 2 units is better than one large unit. Just something to consider
stormer.lyn
post Mar 16 2024, 07:22 PM

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QUOTE(GamersFamilia @ Mar 16 2024, 05:33 PM)
that's what i've done , 2 units of 1 hp for my living room , sometimes turn on both at the same time and sometimes turn on only 1 unit , depending on what purpose i'm gonna use it
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Good that you did this. Some people will put a big a/cond unit because the space is big, but the cool air won't spread out properly.
stormer.lyn
post Mar 17 2024, 09:14 AM

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QUOTE(westlife @ Mar 17 2024, 02:19 AM)
besides, the mitsubishi JV10VF aircon in my room got gas leaked until empty in dec 2023 when i moved in, i reported to the defect team to fix and now the aircon is working fine until now.

given that it has been working for 3 months now, it should have no further leaking issue on the piping etc. rite? if yes, the gas should leak again i supposed?
*
It could be possible the a/cond is still leaking. A leak could be very, very slow but you won't be able to notice for these 3 months yet, as the refrigerant has not dropped below critical level. Just keep monitoring

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