Michael G Puyallup , WA December 07, 2019 Appliance: Whirlpool Microwave, Hood WMH53520CW4 Whirlpool Microwave Wmh53520cw4: Whirlpool microwave door open/close error. How to replace Door Switch. Replaced door switch. The part from Appliance Pros came fast. Also replaced microwave fuse I blew. 28 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes