2 problems with 1.6 bluehdi

[hawk1328]

Hello

I have two problemes regarding berlingo 1.6 bluehdi 2016.
1st problem is that with a squealing noise when ac is on at low rpm's when ac is off the noise is gone, I have new ac compressor.
2nd problem is that sometimes only hot air is blowing on windshield and I cant change direction or temperature.

Thanks for help

[brodfather11]

It could be the drive belt causing the squealing , try pouring a little water on the belt when it is making the noise .