Customer Questions and Answers for Microwave Door Switch by Whirlpool

Heath, this can be caused by one of the interlock cams closing up. With the power supply cord unplugged, it would be recommended that the upper and lower interlocks are checked to see if they are in the closed position. If one of them is locked, it can be moved to the open position from behind the control panel and it would be recommended that the door switches are tested for continuity to identify if any have failed. The top right and bottom-left switch should have continuity with the door open. The top left and bottom-right switches should not have continuity when the door is open. If a switch fails, it would be recommended that the corresponding interlock is changed if it is the upper use the part number W11182140 and for the lower use the part number W11182141.