Many thanks Sleepyhead! I guess one could be lucky and find it easily or it could be a long job. (I wonder if there are any other prime suspects apart from the heater element?)
Can anyone help please? Dishwasher starts OK but into main wash cycle it trips the mains RCD (30mA). I suspected heater element so fitted new one but to no avail. I am not keen to pay Zanussi engineer 50 pounds plus vat plus parts on a 10 year old machine; maybe there is something else I can...