Sounds just like mine! My big black hose from the dispenser drawer to the drum was split and leaking when the water went into the machine. Replacement cost about ÂŁ17, bought online by typing in a search for indesit washing machine hose.
It is a common part for a number of machines and is accessible if you take the top off. Please disconnect from the power before touching, I know someone who died trying to fix a washing machine.
Janet
August 2010