What the Error Code Means
Error code AF generally means the dryer detected restricted airflow through the venting system.
It points to airflow performance rather than a confirmed single failure.
Common Symptoms You May Notice
- Clothes take longer to dry than usual.
- The dryer may stop early and show AF.
- The cycle runs but heat seems weak.
Most Common Causes (From Least to Most Serious)
- Lint buildup in the venting: Lint can collect in the vent path and reduce airflow.
- Exterior vent is blocked: A clogged vent cap or lint screen can restrict airflow.
- Airflow is outside the expected range: In some cases the dryer pauses when it cannot confirm normal airflow.
Safe Things You Can Check Yourself
- Clean the lint screen before starting a new cycle.
- Make sure the exterior vent flap opens freely and is not blocked.
- Try a smaller load to see if drying improves.
If at any point this feels unsafe or unclear, stop and contact a professional.
When to Stop and Call for Service
- The AF code returns after airflow checks.
- Drying times remain unusually long.
- You notice burning smells, unusual noises, or repeated shutdowns.
Typical Repair Cost Range
$150-$400 is typical for professional diagnosis and repair of dryer airflow issues, depending on the cause and parts involved.
Costs vary by region, model, and provider. Request an estimate before approving any repair.