Most likely the circulating pump that does the washing phase - could you kindly let me have the PNC that is located on the rating label in the door area -- Ian
OK whilst I am checking out the data can you confirm that the noise is only during the wash phase, not the pump out phase. You can check by selecting a program and then hitting start as the machine will pump out for the first few seconds prior to filling.
OK are you able to take the appliance apart or is this outside of your comfort zone?
OK if you have someone handy with tools I can talk them through it but it is likely that a piece of glass, pottery or bone has got jammed in the circulating pump and that is what the noise is. It could also be that the bearings have failed - the replacement cost of a new pump ranges from about £60 to 85 depending upon where you get it. Labour on top of about another £50/60 and that gives you an idea. If I were you I would get someone to have a look first and then you have the information you need to make the decision. In the meantime would you kindly rate the information given sofar, once done further help is free of charge so do come back to me if you need further advice.