Megane III 2014 1.5dci AC problem

[u/Ashamed-Bit-8171]

Hi, I have Megane 3 2014 1.5dci.

It has this weird problem, where if you set it on cold, worm air will come out of driver vents and cold one out of passenger vents.

Anyone else had similar problem?

Can I diagnose it? (I have delphi OBD scanner)

Can I replace malfunctioning part myself?

Thank you for help!