407 side vents hot air center vents cold air.

[galonki]

a mate of mine has the 407 estate 2.0 hdi 2004 i think, and he has this problem with or without ac on the side vents blow hot air when supposed to be blowing cold and center vents blow cool not cold air.

recently air con had leak, leak was fixed system refilled with freon but now he has noticed that this is a different problem.

any suggestions?

thanks.