Whirlpool Dryer Error Code af

The AF code on a Whirlpool Amana dryer stands for low inlet air flow. It means the dryer's control system has detected that airflow through the exhaust system is below the acceptable level. This code applies specifically to Amana models within the Whirlpool product family. The issue is almost always related to a restricted, blocked, or improperly installed exhaust duct.

Running a dryer with restricted airflow is not recommended. Inadequate airflow causes the dryer to overheat, which can damage internal components and increase the risk of a lint fire in the duct. It also means clothes will not dry properly and the appliance will run inefficiently. The airflow restriction should be corrected before resuming normal use.

If the fix only requires cleaning the duct or repositioning the dryer to straighten a kinked hose, the cost can be minimal, often just your time. If the duct needs to be replaced with proper rigid metal duct, materials typically run between $15 and $60 depending on the length and fittings needed. If a professional duct cleaning service or appliance technician is needed, expect to pay anywhere from $80 to $200 or more depending on your location and the complexity of the vent run.

Start by pulling the dryer away from the wall and checking whether the vent duct between the dryer and the wall is crushed or kinked. If that section looks clear, inspect the entire duct run for lint buildup, check the exterior vent cap for obstructions, and confirm the duct run length and number of elbows fall within acceptable limits. After clearing any blockage, run the built-in DIAGNOSTIC: Displaying Inlet Air Flow test to confirm airflow has been restored.

Simply resetting the dryer by unplugging it or pressing a reset button will not permanently clear the AF code if the underlying airflow restriction is still present. The control will detect the low airflow condition again once the dryer resumes operation. The code will only stay clear after the exhaust path has been physically corrected and airflow is restored to an acceptable level.