Hi I have an ariston Margherita 2000, model awd12. I had the same problem, drum not turning,would not empty, dial just clicking round. I found the problem was the carbon brushes were worn out. The good news is that they are easy to get and easy to instal your self. Total cost of the repair was £19 and dirty hands. RESULT!. If you can not do this your self then a repair man will cost about £60. Hope this helps.
Merry Xmas...
Craig McInnes., December 2008