WM72P washing m/c beeps and stops?

when i turn on my hotpoint wm72p it starts as normal ie i can hear water running into the m/c then it stops and goes beep beep and displays read instruction manual. i,ve just read the manual and there is no mention of it going beep beep beep beep. make is a Hotpoint Ultima 1200 WM72P bought about 6yrs ago