Diplomat Dishwasher - Model No ADP8332 not working?

My Diplomat Dishwasher - Model No ADP8332 stopped working last week. It has been making some strange creaking sounds for a while. I had a look at it and put it on a rinse mode and it started to work again. But now it has once again stopped working. Can anyone help. There is water in the bottom but it doesn't seem to be coming through the arms as the pots are all dry.