hi, i have the same problem with my IDL535
Inside the dishwasher is a polystyrene float switch, this is activated when the water level raises, i have yet to discover the cause of the water raising but to get it going again for a few more weeks i turn the power off and tip the dishwasher on its front, water comes out and it works again, when i figure out how or why the wter is getting in i will let you know
Steve
Steve wade
July 2008