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Source-backed error-code guide

Reviewed

Whirlpool Dryer AF / F4 E3 Error Code

Whirlpool says AF or F4 E3 indicates that the lint screen or vent may be clogged, crushed, kinked, or have too many turns. The dryer may continue to run while the alert is displayed.

Applies to Whirlpool dryer

What the appliance detected

Detected condition

The dryer reports restricted airflow.

What may contribute

Possible causes

  • Lint screen restriction.
  • A crushed, kinked, clogged, or overly long vent path.
  • A vent system with too many turns.

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 alert and model

    • Write down whether the display shows AF, Check Vent, or F4 E3.
    • Confirm the model manual and venting instructions before changing the installation.

  2. Clean accessible lint and vent points

    • Clean the lint screen.
    • Inspect only the accessible vent path for crushing, kinks, or obvious blockage.

  3. Stop if the alert returns

    • Touch a key to clear the code only after checking accessible airflow items.
    • If the alert returns or drying remains poor, request service or qualified vent inspection.

Actions not recommended

  • Do not operate the dryer with a known blocked vent.
  • Do not open panels, access internal heating parts, or perform gas service.
  • Do not use sharp tools inside hidden venting.

When to stop and request service

  • The alert returns after the lint screen and accessible vent path are addressed.
  • The vent is hidden, damaged, crushed, or cannot be safely inspected.
  • There is burning smell, excessive heat, smoke, or gas odor.

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: August 17, 2026.

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

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