Hi Flora, does it come up with an error E0, E2, E4 etc? as this will tell me where it is aborting. Other than that press the P button till you get E0, shut the door and it will drain, this will rest the pcb.
If you get an error message after this then please send a post and I will tell you what the machine is telling you.All the best
FOXY, August 2008