Door will not open if drum contains water. Put end of drain hose into a bowl lower to ground, water should flow(gravity) ,even a (dribble indicates a near total blockage be prepared to empty bowl 4/5 times when empty door should open .Now strip bottom hose (need some old towels for this) check for blockage in the filter ,check drain pump, for hairs ,fluff etc including the impeller turns ,(maybe seized) if it don't replace with a new one
wirecutterman, January 2008