Kenmore Dryer Error Code AF

AF stands for restricted airflow condition. The dryer's control system has detected that air is not moving through the appliance at the level required for safe, efficient operation. This is most commonly caused by a clogged lint screen, a blocked exhaust vent duct, or an obstructed exterior vent cap. Addressing the blockage will typically clear the code and restore normal operation.

It is not recommended to continue running the dryer while the AF code is active. Restricted airflow causes heat to build up inside the drum and exhaust path, which increases the risk of overheating and lint ignition. The dryer may also shut down mid-cycle to protect itself. Resolve the airflow blockage before resuming normal use.

If the cause is simply a clogged lint screen or an obstructed exterior vent, the fix costs nothing beyond your time. Professional dryer vent cleaning services typically run between $80 and $180 depending on duct length and accessibility. If a damaged door seal needs replacement, parts and labor can range from $50 to $150. A full duct replacement or rerouting by a professional can cost between $150 and $400 or more depending on the complexity of the installation.

Start by cleaning the lint screen and checking that the door seal is properly in place and undamaged. Then inspect the exhaust duct running from the back of the dryer to the outside for lint buildup, kinks, or crushing. Finally, go outside and check that the exterior vent termination cap is clear of lint, debris, or animal nests and that its flap opens freely. If all of these components are clear and the code persists, the duct installation itself may need to be evaluated for excessive length or improper fittings.

A reset may temporarily clear the AF code from the display, but the code will return if the underlying airflow restriction has not been corrected. To permanently resolve the error, you need to identify and remove the blockage in the lint screen, vent duct, or exterior vent cap. Resetting without fixing the root cause also leaves the overheating risk in place.