Blake C Davdsonville , MD October 18, 2015 Appliance: Whirlpool Electric Dryer GEW9250PW1 Whirlpool Dryer Gew9250pw1: Duet dryer 3 beeps indicated door switch malfunction. How to replace Thermal Cut Off Kit. Fixed it myself. Diagnosed the problem with internet searches. Watched a lot of AppliancePartsPros videos - VERY helpful. Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours