MICROWAVE WHIRLPOOL WMH53520CS Lights and door doesn't always recognize its open or closed. There is a service pointer for this with a kit number. Customer states that microwave at random times will beep as if microwave was in use and and finished a countdown. Ordering parts ; ordrng 1 W11244490 (Service kit) and 1 W11100597 (Cnrt - elec)