bosch exxcel washer dryer wont complete programme?

i have a bosch washer dryer 3.5 yrs old,pump went a couple of months ago,replaced that,but now,switch machine on and it washes...and washes..and washes.. and washes,never goes into rinse or spin mode....have to do that manually every time....so cant just go out and leave machine on.....it will just wash all day! any ideas? Adam