Filter blockage, hose blockage, drain pump problem,
(You will need to get rid of the EXCESS WATER FIRST) by lowering the drain hose into a bowl when flow has stopped
now find clean out the drain filter (old towels for spillage)
remove lower hoses check for part/blockage
remove clean out the drain pump chamber
test the pump operation
(a replacement pump maybe required)
wirecutterman, April 2009