I’m trying to repair a CDA CW446 slimline dishwasher. The fault is as follows. With any program selected, you get a single bleep, followed by two quick bleeps and a 2 second pump. This will continue, until you switch the machine off. It is allowing a small amount of water in, but this is pumped stright out. I have checked this by turning off the water. I have checked the base for water and it’s dry. There is no fault code registering via the program lights. Which ever program you select, that light will flash continuously.