Whirlpool washer · F21 · Free working pilot
Start with the drain, not a new pump.
F21 means draining took too long. Work through 3 external checks and keep a record of what changed.
This pilot is free. It covers Whirlpool front-load F21 only, not the full Repair Pass. No payment or account is needed. We do not diagnose internal parts from the code alone.
Sources and limits
Manufacturer guidance checked 18 October 2026. This pilot stores one case on this device only. No email recovery, shared link or cloud repair log.
Other symptom? Browse the published guides.