Hey... I also own Cuore 2008 model cx eco... when Ac is on fan mode it only throw normal air... no cooling.... and when AC is on mild mode AC start to trip very quick like after 1 or 2 min... and when AC is on cold... AC trips too lately like after 5-8 mins or may be more.....
when Ac is on u will feel lack in power but it depends on tunning tooo... If ur AC is now cooling than check its gas too...
PS .... their is a huge difference in cooling between mild and Cold mode ...