Whirlpool · Smart Electronic Dryers
The 'AF' diagnostic code signifies restricted airflow, which can be caused by a clogged lint screen, a blocked or damaged vent system, or a vent that is improperly installed. The dryer will continue to run, but efficiency will be reduced.
Click steps to track your progress.
Touch any key to clear the code from the display.
Clean the lint screen before or after every load.
Check the vent run from the dryer to the wall for crushing or kinking.
Confirm the vent run and exterior exhaust hood are free of lint and debris.
Verify your vent system adheres to recommended run length and elbow count (refer to Installation Instructions).
Select a Timed Dry heated cycle and restart the dryer.