if the drain pump fails then the machine will stop after a fer moments drying as the internal sump (at bottom of the maching gets is of course full)
however replacing the drain pump is actually not that difficult, but remember to clean the resovoir full sensor when you do otherwise the cycle will not work due to a false signal after the resovoir has been cleared
I found that if you get the issue above if you haven't inserted the condenser properly, (not making a good seal to the downflow).....
gareth
July 2010