AFMaytag Dryer — Maytag Dryer AF Error Code
Airflow restriction detected — exhaust vent is blocked or severely restricted
AF (Air Flow) means the dryer has detected that its exhaust airflow is severely restricted. Like LG's d80/d90 system, Maytag dryers monitor exhaust conditions and trigger AF when airflow falls below a safe threshold. The most common causes are a clogged lint screen, a blocked or kinked exhaust hose, a clogged exterior vent cap, or an exhaust duct run that is too long or has too many bends. AF is both a performance and fire safety warning — lint buildup in a restricted duct is the leading cause of residential dryer fires.
Unplug the dryer and pull it from the wall. Clean the lint screen thoroughly, then disconnect and fully inspect the exhaust duct from the dryer to the exterior vent. Use a dryer vent brush kit to remove lint from the full duct length. Check the exterior vent cap for blockages or animal nesting. Inspect the flexible hose for kinks or crushing and replace it with rigid metal duct if possible. Once airflow is restored, reconnect and run a test cycle — AF should not return. If it does, the internal duct or blower housing may have a blockage.