Whats wrong with my fridge. im unsure of the make but its a whirlpool fridge i brought it brand

Question

im unsure of the make but its a whirlpool fridge i brought it brand new at the start of 2005 its white and a bit over 6 ft tall freezer at top,the problem is every time i open the door it beeps continusely at the same time the light flashes on and off