Apr 13, 2018 - Need to look up an error code on your Whirlpool front load washer? Use this page to find your error code. Mar 21, 2017 - The Whirlpool washer error code F21 means the washing machine has a 'water draining issue'. The drain pump itself or the drain hose is clogged and the washer is having problems draining the water. The washer is taking too long to drain the water out of the tub. Find common error codes for troubleshooting problems with your Whirlpool Duet HE front-load washer at Sears PartsDirect. Learn what to check and what repair . Find error codes for your Whirlpool Duet Alpha model front-load washer at Sears PartsDirect. Learn what to check and what to repair. Find common error codes for your Whirlpool Duet Steam front-load washer at . to clear the error code and initialize the new steamer electronic control board. Find common error codes for your Whirlpool Duet Sport front-load washer at Sears PartsDirect. Learn what to check and what repair you need to make. Whirlpool Duet Front Load Washing Machine Repair Guide Explains The Duet Washer's Error Codes & Troubleshooting. . a row with no fault the error will be cleared from the washer's memory, so any errors you see are likely new and active.