Can anyone please help me?

I am trying to remove the facia around the stereo in a xf falcon
and I have removed the screws beside the glovebox and the drivers side
along with the two hidden screws near the fan vents above the air con dials
but when I pull the facia forward the air con unit is still attached and I have no idea how
to detach it from the facia.

Many thanks in advance..

pull the heater control knobs off and there is nuts behind them that need to come off.

Thanks for the help Nalane!