Panasonic Fault Codes

[Debonair Spain]

Hi, I am a new memebr , so I hope this isn't a regular question.

I have two panasonic air conditioning units, E9-CKP and E15-CKP. The neither unit is cooling efficiently, the smaller unit is the worse of the two. The units are about 4 years old, could they need regassing? I hear that a fault code can be obtained from the remote control, how do I do that and is there a list of the codes and the faults?

Any help much appreciated, thanks, Dave Bowles

To determin weather the system requires gas, an engineer will have to put a set of gauges on the system.

Are both outdoor units running?

And have you cleaned the filters?