CW 195/1 CDA Dishwasher?

It seems to start fine, I can select any cycle but all cycles seem to have a fault when the rinse cycle is reached, the machine beeps continiously until door opened and a green light flashed three times, I'm guessing to indicate a fault.

Any idea would be appreciated as I am reluctant to pay the call out charges to CDA, v expensive!!! Also machine is just past one year old!