How to Fix Whirlpool WFW5620HW Washing Machine F21 Error Code

Quick Diagnosis

The F21 error code indicates a long drain error, where the washing machine fails to pump out water within the designated time limit. This is typically caused by a clogged drain pump filter, a kinked drain hose, or a failing drain pump motor.

Technical diagnostic blueprint diagram for the Whirlpool WFW5620HW Washing Machine showing symptoms of F21 Error Code.

Step-by-Step Resolution

  1. 1

    Disconnect the washer's power cord from the wall outlet.

  2. 2

    Place towels and a shallow basin on the floor underneath the lower front kickplate access panel.

  3. 3

    Unscrew the plastic kickplate or the drain pump filter access door at the bottom of the washer.

  4. 4

    Twist the drain pump filter cap counter-clockwise and slowly pull it out to capture the water in your basin.

  5. 5

    Remove all trapped debris (like coins, hairpins, or lint) from the filter basket, rinse it under hot water, and clean the pump housing chamber.

  6. 6

    Ensure the drain hose behind the washer is not bent, kinked, or elevated higher than 96 inches before plugging the unit back in.

Alternative Causes & Edge Cases

  • Applies to Maytag and Amana front-load washing machines utilizing the same Whirlpool pump assemblies.
  • Using non-HE laundry detergent causes excess suds that confuse the water level sensor and trigger the F21 code.