Hi there I was looking on the net for an answer to the same question, In the end hubby and I solved our problem ourselves, we had a blockage in the pipe that takes the water through from the tank to the bottom of the cleaner! Just an air bubble we think. What we did was to remove the end of the water tube from under the cleaner, just pulls off of the blue part. and then fill the water tank with plain water and then without turning the cleaner on either use the trigger to pump water through , (ths takes ages ) or do as hubby did, and suck it through!! Hope this helps. We did take the back off of the cleaner to see if we could do anything else and it s quite a simple set up, so if sucking doesn't help don't be too worried to investigate further!!
laura levick
May 2009