Researched what I can on this, but we’ve just moved into a house with a CDA CW447 integrated Dishwasher. WHen trying to use it, you close the door, the machine then beep 10 times, and the left hand four programme lights flash. The machine makes a noise like the pump.
The standard fault is the base tray flooding, but that gives 3 flashing lights and the drain pump running. 4 flashing lights is not a recognised code, although anything is possible with these Chinese machines. I’d start there, with the power off, of course.