quantec

Just joined today! Prompted by heater/aircon Blower malfunction. C5 is 2013 "connected" model. Have it just three weeks after changing my old 2005 C5 that never gave any instrument or "comfort" faults! First noticed when I pressed the windscreen demist boost. Although all lamps light up and respond on the Mono Zone Digital Air conditioning panel, there is no sound from the Blower even when turned up high. Have checked Fuse 11 Air conditioning Blower (40A) under the bonnet and it's intact. Doing some Google searches mentions a Resistor Box as possible cause... Does anybody have any suggestions? Many Thanks