how can i fix my my zanussi aquacycle 1500,FS1555W?

My machine, zanussi aquacycle 1500,FS1555W, has the same fault code as Mandy,MAY 2006. 1 beep,5 beeps then 4 all the time, with end light flashing simultaneously. I had to replace the fuse after a lamp bulb blew and tripped the circuit. There is no noise from the door lock which i have checked and eliminated as the cause. Noise stops when in the off position,am unable to run any programme. Can anyone help please ?