Hiya purchased a second hand dishwasher hot point aquarius dwf40p all plumbed in and fitted put it on setting A intensive wash and pushed the power button on and heard a beep and then prewash light flashed then after few minutes the wash button flashed with the prewash light both these lights have been flashing for the last 45 mins so ive turned the machine off since writing this my fiance has put the dishwasher back on on setting d fast wash and know pre wash and wash lights are both flashing please help thankyou for your help in advance