Right have done a fair bit of noseying around and have not found a positive answer too my question although plenty of info as too which of many things it may be.
So went out Friday night, wet and cold night and put on the climatronic and there is no blow from it, it will heat up and all the orange buttons are lighting up bar the recirculating one top left corner. Car is booked in at end of week to VW although hoping this may be as simple as air con regas and at worse condensor. It is not making any funny noisey the cabin so hoping it is a cheap fix.Anyone know the symptoms of the gas low in the system, thanks in advance.