Actually you can tell if the AC is running with low gas, you hear some hissing sound at the blower unit when it start up for the first 5 to 10 min, most running at 1/2 gas full it still create such sound. Syne AC will even have this sound if only 2/3 full.

With this knowledge I call up Panasonic just few days before warranty expired, they came and check, true enough the AC gas was not enough. It take longer time to cool the room and making hissing sound. He found the problem is at the join/fitting at three compressor, ask my own contractor came and redo the fitting and vacuum and refill gas. New got to Waite another 6 months.

Learn this from an experience AC installer many years back.

This also apply to car a/c compressor.

I am a person who like cold, and very sensative to a/c, bit of a/c problem i will feel it.

Usually there is a trace of compressor oil at the place of gas leak, mineral oil for R-22 system and POE (synthetic oil) for R410A system btw, these oil can be easy wash away by water or rain, cover the copper join for rain if its expose. then you can check after a few day.

Btw is that a copper connector join or welding join the technician detect the leak?

Anyone know how to solve this problem?

I am having problem with one of the 1HP air conditioner unit from Panasonic. Problem started after about one month after installation.
It seems that it is noisy when the air swing is allow to swing.
Their technicians have made 5 attempts to rectify the problem and till now, the problem still persist.
It seems that they are using trial & error method. Every time, when they come, just apply some grease onto the moving parts and the next time, come and change the air vent. After using for a few days, after the grease dries up, the noise comes back.
Now, the warranty is about to expire...

Written to their Customer Care dept, then they called and want to try to apply grease and replace the air vent again. Really don't know when all these trial & error will end and problem solve.

Really regretted installing the Pana aircon. Some more went and installed 4 units. Include the older set (2 years ago), so, in total 5 units. 

My 1.5HP aircon take ages to get cool, abt 10 minutes, is this normal?

how many time do you expected, 1 min? I would say 10-15 min is standard time to cool the room.

May i know the model?

Anyone know how to solve this problem?

I am having problem with one of the 1HP air conditioner unit from Panasonic. Problem started after about one month after installation.
It seems that it is noisy when the air swing is allow to swing.
Their technicians have made 5 attempts to rectify the problem and till now, the problem still persist.
It seems that they are using trial & error method. Every time, when they come, just apply some grease onto the moving parts and the next time, come and change the air vent. After using for a few days, after the grease dries up, the noise comes back.
Now, the warranty is about to expire...

Written to their Customer Care dept, then they called and want to try to apply grease and replace the air vent again. Really don't know when all these trial & error will end and problem solve.

Really regretted installing the Pana aircon. Some more went and installed 4 units. Include the older set (2 years ago), so, in total 5 units. 

Mitshubishi only takes 5 minutes and the cool air started after the compressor running but NOT for Panasonic. This Econavi is really slow and I was told should be 3-5 minutes. Even after 10 minutes, it only start has some cool air and not really cool as compare with Mitshubishi. That's why I wonder if something wrong with this model. I had old model without Econavi and it works well.

Anyone know how to check the error code for Panasonic CS-PC18QKH using remote when the timer LED blinking & aircond auto off by it self?

my pana inverter (used for about 2 years) suddenly turned off. Turned back on but no more cold air.
Check error codes - give 95.

tech came found mainboard at compressor faulty - one of the caps blew
lucky still got warranty

My pana 1 hp capacitor blew.  What crap!  Never buy pana again.