The inlet/drain light is really a ' Fault' light which can occur for MANY reasons.( not just inlet or drain).
When a fault occurs, the light comes on & the machine cancels the programme, usually with water still inside. This gives the impression of a drain fault, but this is usually NOT the case.
Cancel the programme ( by pressing the start button for a few seconds). Then select & start any programme. The first thing it will do on any programme is try to drain ( takes 20 seconds or so ). If it does drain, then you know the drainage is OK. If it lets water in then the inlet is OK.
Let the machine run & BE LUCKY !
Bernii
November 2010