finaly they coming to check....guess wat i get?all the gas inside gone....no gas...funny things...special thanks that installer...somemore still dare ask me pay rm50 service and rm80 to pam gas inside agains...

If suddenly got ice flying out.. small Pierce ice flying when I sleep in midnight just now..Panasonic 1.0 inverter. Seem alot problem...I buying time after 1 month then problem come...aircond with fresh hot air coming out.. then they come fix and after few month now got ice come out..

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Added on July 22, 2012, 5:58 amIf suddenly got ice flying out.. small Pierce ice flying when I sleep in midnight just now..Panasonic 1.0 inverter. Seem alot problem...I buying time after 1 month then problem come...aircond with fresh hot air coming out.. then they come fix and after few month now got ice come out..

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Added on July 25, 2012, 10:27 pm
Many condo and apartment nowadays has pre-fixed conceal piping for air-cond.
So ensure the spec of piping is suit to the air-cond needs before buying.

On the bolded part, it is not entirely true but it is not wrong. R410a is a mixture with very very very very very very minimal temperature glitch as the boiling point of the mixture refrigerant is similar. As the boiling point is similar, the evaporation rate of each refrigerant is similar, hence there will be no one refrigerant is less in ratio than other. If there is leakage, top up on R410a is acceptable even if it is in 'commercial unit installation standard'.

However, it is often very hard to determine how much refrigerant is left in the unit. What installer will do in Malaysia is that they will measure the pressure of the system, using experience, they assume the remaining refrigerant quantity and add according to what they think is the balance. What Aussie will do is that they reclaim the refrigerant into a tank, weigh it, and top up according to spec, with the tank on a weighing machine. Before the recharge, they even do vacuum the system before re-charging. So if we are kiasi, we release the refrigerant (which is illegal), and recharge the full weight. Installer in Malaysia do not use the reclaim machine.

As for the piping thickness, some manufacturers specified 0.8mm because they kiasi and wanted to cover their own ass. I have experience in using 3/8 tubes with 0.38mmt and 1/2 tubes with 0.56mmt, with working pressure of 400psi, testing pressure 600psi. Operating pressure of these room air conditioners are lesser than 400psi. The worried point of why manufacturers wanted to use 0.8mmt tube is that they are concern about the flaring point crack, not the pipe burst. Poor flaring will result in a crack at the joining point hence leakage.

Most…if no all brand now manufacture/OEM @ world factory-china, National/=Panasonic so don't compare

There are still some skill set China even Taiwan find it hard to take on. Like car gearbox, how many do you see it manufacture from China? Mainly still come from Japan and Europe.

China is goods on manufacture because of cheap labor,soon they will lost the competitive. Take Malaysia for example  we used to be good in manufacture  same as Singapore and Taiwan. But we never evolved, now we can't compete with China for manufacture, and neither we can compete with Singapore and Taiwan for high tech manufacturing.