Whirlpool dryer error code
AF
Restricted airflow, check vent
Air is not moving freely through the dryer, usually because the lint screen or vent is clogged, crushed or too long.
Also shown on some Whirlpool models as: Check Vent F4E3 F4 E3
Try these free fixes first
Unplug the dryer before opening any panel.
- Clean the lint screen.
- Unplug the dryer, pull it out, and look for a crushed or kinked vent hose behind it.
- Clear lint from the whole vent run and the outside vent hood flap.
- Make sure the vent is not too long and has as few bends as possible.
- Run a timed dry cycle to see if the message clears.
Still showing AF?
If the warning stays after cleaning, call a dryer vent cleaning specialist to clean the full home vent system.
Questions people ask
What does AF mean on a Whirlpool dryer?
AF on a Whirlpool dryer means: restricted airflow, check vent. Air is not moving freely through the dryer, usually because the lint screen or vent is clogged, crushed or too long.
How do I fix Whirlpool dryer error AF?
Clean the lint screen. Unplug the dryer, pull it out, and look for a crushed or kinked vent hose behind it. Clear lint from the whole vent run and the outside vent hood flap. Make sure the vent is not too long and has as few bends as possible. Run a timed dry cycle to see if the message clears.
When should I call a repair technician?
If the warning stays after cleaning, call a dryer vent cleaning specialist to clean the full home vent system.
Related dryer codes
Samsung ClgDryer: Vent is cloggedSamsung C90Dryer: Vent mostly blockedLG d80Dryer: Dryer vent is restrictedLG F0Dryer: Lint filter not insertedBosch E01Dryer: Lint filter is blockedBosch E12Dryer: OverheatingSource: Whirlpool official support · Reviewed 2026-10-01