Hey guys, i've been driving my Forte 1.6SX for only a month. Everything is fine and good. No rattling sound, no pull-left symptoms but only one issue i facing, the Air-Cond!!

Throughout the month, i experienced 4 times of the following condition: While i was driving, i switched my 'air-cond' to 'ON', fan speed 2, 20 degree celcius and set to internal-circulating air mode. The problem is the air blown was hot, and it was like air from the outside. I tot i set the mode to 'external' mode (Greenlight) but no, everything was in proper but how come its hot? After probably 20mins with that situation, it suddenly turns to cold~~(as though i need to accelerate to certain speed on the road only it turns cold) 

I've told the SC in BBK-Klang to check (under my 1st 1k service), but they said everything is ok, compressor, fan, refrigerant etc.. all in good condition!!

Anyone experiencing the same problem?!? i really wanna know wat is the problem..hope u guys can help....

TQ~!!