candy cnw 136 / 156?

hi my candy washer dryer fills and empties continuously every time i try and do any wash cycle,ive tried spin cycle and its fine but as soon as i try a wash cycle it fills stops drains fills again stops drains until i switch it off-i have checked filters for blockages and even checked pressure switch,hose and chamber and all clear pls send me some ideas as im getting well fed up..... cheers everyone