Hello. I've had the same trouble. I phoned hotpoint and they said it's something to do with the heating element and requires an engineer to mend it. They said I could pay a one-off fee of £115.00 to fix it or I could pay £15.90 for 10 months and that would include fixing the problem including parts, an extended guarantee on the dishwasher of 1 year and if it goes wrong again at any time in that year and they can't mend it, they would replace it with a new machine.
Sharon, July 2008