whirlpool dishwasher problem adp 4501 - I had a problem with this machine not starting properly, hunting, with the start light flashing apparently continuously the pump also going on and off in time with the flashing.
After looking around a number of forums I cleaned out the sump gently with a sponge which did not help, then followed this up by pouring a kettle of boiling water into it. This had no immediate effect, but after a few hours the machine started and ran properly again.
Cost no money and saved me the hassle of taking it out and stripping it down - well worth a try.
MikeAHill, September 2009
