Air con slow to cool on passenger side

[Rockmelon]

Originally Posted by BrianX54.4is

If the passenger side blows warmer - then the heater valve or the control signals to the valve could be the problem. Attachment 42346

thanks, Brian. pls pardon my ignorance, i thought the X's aircon sys controls temp by regulating the blower fan speed when set to auto and according to whatever temp setting on the control panel? it does not really control the compressor which seems to be on all the time when cool ac is activated. the heater is only activated via a seperate push button on the control panel and switching to heater air duct is done manually via a rolling dial with blue and red color dots at the center air outlets? i noticed that heater air comes out only from the driver left & passenger right air outlets and not from the center air outlets.