Miele flashing yellow rinses light?

I have Miele W504 washing machine. The washing machine starts to wash a bit then the yellow(rinses)light starts flashing,repeating again and then empties.Machine stays on with flashing yellow light.Cycle is very sort and not complete. By the oparating instruction The Rinses indicator light is flashing (ther is a fault) Start the programme again.If the fault indicators occur again,contact the Service Department. I am electrician. Thank you