Hello Charlotte
The F14 fault is a wash pump pressure sensor fault.
Can you hear the machine starting to wash then faults after about 30 seconds? If this is the case it is possible the wash pump impeller has become blocked
(cling film is the most likely cause). This is a call for an engineer with a fully intergrated dishwasher it will most likley be 90 mins work time. Hope this helps.
MC, January 2012