researched quite a bit on the performance of R22 VS R410a and their advantages/downside.
found a research paper on the implementation of R22 and R410a air conditioners.
nice scientific study by NIST.

http://fire.nist.gov/bfrlpubs/build02/art186.html

summary for those that don't wanna bother reading:
1. install your outdoor unit in a shaded area, with lowest ambient temperature to get highest efficiency.
2. R22 have better efficiency in higher ambient temperature compared to R410.
3. R410 while have advantages compared to R22, require better component because of higher operational pressure. thus affects long term reliability compared to r22.

4. seems like the best system is a dc inverter system with r22 gas. if the initial cost of r22 vs r410 is the same.

.

This post has been edited by BrandNewStart: Jun 15 2014, 06:20 AM

Actually the noise is coming fr the blower flap when fan mode is at max speed. Its like the flap is shaking. Not the heavy wind noise.

Not sure whether its normal?

My is Sharp Plasmacluster Inverter. I guess is wall surface not even, due to the installer install it very near to the corner.

I intent to get them reinstall, but they say a lot of work, have to redo the hacking and etc. And they keep saying no problem.

I notice the gap below the indoor unit between the wall was not equal. Once I insert some rubber, it seems ok.

Weird thing is when the Sharp Technician came and check, I get his advice should I take it out and install back to the proper alignment, and he said is no need.

Hope the sound is not coming back, really disturb my sleep that night.

This unit also have plastic cracking sound when unit on after a while and after off. I do understand is due to the temperature different and the plastic expand, but kind of obvious. My super old Panasonic do not have such problem.

At fist wanted to take Panasonic back, but the comment of the quality now make me worry. End up take this due to the shop keep recommended.

Hope it last long, the unit was imported from Thailand.

I don't know how to take off the panasonic split unit or compressor unit.
So i use chemical to wash 3 areas with plastic cover at bottom:
1. Aluminium mesh (spray on the mesh)
2. The split unit fans (spray from bottom towards the fans)
3. Compressor mesh (spray on the mesh)

My wife did feel that it helps a lot.
1. Faster to cold down the room
2. Cooler
3. Stronger wind (previously too much of dust block the split unit fans)

Temporary i do that 3 steps above until end of the year i only ask professional people to service the aircon.
For that outdoor compressor unit, do you guys think it is OK if i spray water on the mesh without turning ON the fans, do you think it will spoil the fans or the compressor unit??

This post has been edited by sovietmah: Jun 16 2014, 11:24 AM

Where you buy the liquid?

Your problem may not be due to installation. It can be problem due to the bad wall plastering hence you see the gab. If the installer force the bracket to alight / stick to the wall, the bracket will sure wrap bit and may result hard / can't mount the blower unit. Do take note all wall are not make perfect flat, that is why we have this so call Skimming with add into our additional cost.

The installer need to tell you your wall are not flat and will cause the noise problem. I know some won't tell you because house owner may say installer don't know how to install and give excuse.

May or may not be the product design but the difference in height between the AC pipes and the drain outlet pipe. If you're in Klang Valley, I can recommend an installer to have a look. He's an eye for detail and minor stuff like this he can point out if it is truly an piping works issue.

I kinda dislike the foam insert as that would mould over time but maybe the Sharp technician is relying on the plasmacluster to do its job.

The 1.0 HP inverter Sharp plasmacluster model AH-XP10LV in my kids room hardly have filter dirty at all since its commissioning in Oct 2010 and they don't have dripping noises. I use the Clean function after every use and even the cooling fins are clean since all these years. Only thing it needs is a compressor maintenance.

Thanks for your reply. Ya, I staying at KL, but at Condo. The drain pipe and the copper pipe location on the wall was fixed. Of cos, I do believe the unit can adjust further in to avoid the uneven wall at the corner. I guess the installer want to minimize the copper pipe expose, and minimize the copper pipe of course, therefore put it as near to the corner as possible.

However, if I get the installer that you recommend to have a look, of course need charge right?

The connection of the indoor copper and outdoor was at external wall, which means not really have enough length to move, so somehow must spend money to redo. If not serious, have to bear with it.

Unless is cheap, then I can consider to reinstall.

My is AHXP-10NRV, do you use the 'Instant Low Wattage' function?

PMed you the contact. Let him have a look and you decided based on his findings.

In most cases, it is not about the length to the outside compressor but the height of the exposed refrigerant piping and drainage piping in relation to each other on site (where the blower unit is installed).

Yes, at times I use the Low Wattage function. I only use 27 deg max in combination with 1 speed fan.

This post has been edited by halcyon27: Jun 16 2014, 01:19 PM

Hardware shop can buy.

I guess my case is more on alignment of the unit. Thanks for your contact. Will keep it.

Wow, you can set 27 here? How big is your room?
My Panasonic I can leave with 27 cold enough, but my this Sharp, 26 my wife still complain, recently due to hot weather always set for 25 C. But my both room size different, so not cannot compare apple to apple.

Both also same level? or one ground floor one first floor?

Sorry....very far a way to compare, one at Malacca, landed house, very small room, that's why can feel the cool air very fast, with 1HP.

My Sharp at KL was at Condo, less expose to sun heat, as only one side wall only and no roof. But the room was much bigger, almost double up.

Plus this Sharp with 'Low voltage' setting, so since bought always on this, to save energy.
Until lately very hot weather, then on off it. Instantly can feel the cool air was stronger. Maybe with that setting, the 1HP become 0.8 or 0.5 HP only, that's why the coolness also reduce.

Share mine, same room on both at same high, but room ceiling quite tall from ground to high ceiling at 5.5m x 3x3m wide.

Same setting from my previous hitachi inverter higher BTU of 9700 vs ME inverter 8530 BTU only.

But ME inverter more faster cooling than hitachi inverter with more quiet than hitachi model.

For me all brand and design has slightly different

Ya, you are right also.

Lot of installer, just install and go. Hard to get the professional one.

sry a noob question, can we install aircon at a position in a room where wall socket is far away?

1hp = 10m maximum piping length.
So far if you can pay for extra cooper pipes & pump in extra gas shouldn't an issue.

The longer the wires, the ticker it need to be, but how far is far? 100ft? or 20ft? or 1000ft? 10-20ft is not a problem, but than again you should not use normal power socket to drive the a/c, you never know what are connected/shared with the socket. Is better to use independent/direct from DB box.


Kawan, our friend asking socket, not a/c piping.

Oops soli never see properly