3 year old Indesit D62 dishwasher is not working correctly?

Can you help? I'm not sure if I've selected the correct 'expert'.

My 3 year old Indesit D62 dishwasher is not working correctly.

It fills with water as you would expect, the heating element works and it drains the water out. However its not pumping the water round the system so it doesn't actually wash the dishes (the water just sits in the bottom of the dishwasher).

Ideas?