My guess is the jets are clogged. Get the drawer out, take it bits if you can and give it a good scrub. I use a bottle brush and soapy water.
Now clean inside the drawer cavity as far back as you can - the bottle brush is ideal. At the top of the drawer is a row of jets that let the water out. You need to poke these jets with a stiff but pliable bit of plastic - I use cable ties. Wipe the whole thing out with a mild bleach solution and put the drawer back in.
The outlet pipe gets the water from the machine to the drain - if there is a kink or other problem the machine won't empty.