Zanussi Aquacycle 750 keeps running?

My washing machine runs a while then it sticks on running (washing and pumping in water) and cannot goes thru the next cycle so it literally ran all day until i turned it off manually. i am guessing is the malfunction of the electric circuit boardnight or else? i have tried to unplug the socket. it back to normal but problem again. Any ideas?
Thanks for sharing , Steven

Steven
January 2010