So Desperate!! My D/W starts it’s programme, but takes in no water. I’ve checked the water valve and seems ok. A couple of minutes into the programme it starts to beep. When you open the door (it’s fully integrated) the detergent button is lit and the start button flashes 4 times. Is this something I can fix or do I need a professional. I rang one guy who said who doesn’t deal with diplomat as they are notorousily bad for faults and spares – help!!