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Source-backed error-code guide

Reviewed

Whirlpool Washer F21 / F02 Error Code

Whirlpool associates F21 and F02 with long drain time. The documented owner checks are the visible drain hose and correct HE detergent use; a returning code after those checks belongs with qualified service rather than guessed pump replacement.

Applies to Whirlpool front-load washer whose model documentation uses F21 or F02 for long drain

What the appliance detected

Detected condition

The washer is taking longer than expected to drain water.

What may contribute

Possible causes

  • The accessible drain hose is kinked, compressed, or clogged.
  • The drain installation is restricting flow.
  • Excess suds from non-HE or too much detergent are slowing drainage.
  • A pump, internal hose, sensing, wiring, or control condition requires service if the code persists.

Start conservatively

Safe preliminary checks

Work in order and stop whenever a step is not supported by the documentation for your model.

  1. Record the code and protect against water/electrical risk

    • Photograph whether the display shows F21 or F02 and confirm the full model number.
    • If water is leaking toward an outlet, plug, or electrical area, do not touch wet electrical equipment; stop use and get qualified help.

  2. Inspect only the visible drain hose

    • Look for an accessible kink, crushing, or obvious blockage in the visible drain hose without moving the washer unsafely.
    • Compare the hose installation with the exact model installation instructions rather than using a universal standpipe height or insertion rule.

  3. Review detergent use

    • Confirm the washer is using HE detergent and the amount matches the detergent label and washer instructions.
    • Correct chronic oversudsing before judging whether drainage remains abnormal.

  4. Clear the code once using Whirlpool guidance

    • Use Pause/Cancel as the model instructions direct, or disconnect power for five minutes if the documented control action does not clear the display.
    • If F21 or F02 returns after the visible hose and detergent checks, stop repeated resets and request service.

Actions not recommended

  • Do not remove panels or access the drain pump, internal hoses, wiring, or control electronics.
  • Do not put hands into standing water near electrical parts.
  • Do not replace the drain pump from F21 or F02 alone.

When to stop and request service

  • F21 or F02 returns after the visible drain-hose installation and HE detergent use are confirmed.
  • The washer will not drain and the exact model does not provide a safe owner-accessible filter or drain procedure.
  • Any pump, internal hose, pressure sensing, wiring, or control diagnosis is required.

Documented source

Official information reviewed

Our summary is based on manufacturer support material and stays within the limits of that material.

Source reviewed by Appliance Help HQ: September 23, 2026.

Appliance Help HQ is an independent informational site and is not affiliated with or endorsed by Whirlpool.

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