Raymond L Ledbetter , KY January 03, 2015 Appliance: Whirlpool Microwave Hood Combo MH2155XPS0 Whirlpool Microwave Mh2155xps0: Burnt popcorn. How to replace Charcoal Filter. Replaced charcoal filters. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes