Seems strange that it went through the whole cycle but didn't drain at the end.
I would firstly check the drain. At the start of any programme, the drain pump runs. So start a programme & listen. If you can hear a whirring noise then the pump is ok.
If the water is not draining, detach the drain hose from the outlet ( under the sink or wherever ) & try to drain the machine into a bucket.
If still no luck :-
Take off the drain hose & check for blocks or kinks
Try draining the machine without the hose connected
Take off the bottom front covers & see if the drain pump spins freely.
If all these things are ok, then the non return valve is blocked or jammed ( not an easy part to fit on this model ).
Bernii, January 2011
