I have an Ariston A1234 Advantage and I have noticed the powder draw has a push fit hose underneath the draw that takes the water through the washer. When the washer is moved it sometimes pulls loose as it is attached at the other end to the drum. Try checking it is pushed completly on as leeks drop down on to the foot. Also check for holes in the hose. I removed the top of my machine by removing two screws at the back of the machine and I then slide the top backwards to release it from two retaining lugs. You can put your hand down under the powder draw and reach the hose. Make sure you have isolated the machine from the electricity by switching off at the power point before taking off the top.
Hope this helps
MIKE
May 2007