Can I fix Whirlpool code AF myself?

Start with these safe checks: Clean the lint screen. Unplug the dryer, pull it out and make sure the vent from the dryer to the wall isn't crushed, kinked or full of lint. Run the dryer 5–10 minutes and feel the air at the outside hood. If it's weaker than a hair dryer on high, clean the whole vent run and the hood. If the message continues, have the whole home vent run cleaned by a venting specialist. A clogged vent is a fire risk.

When should I call a technician for code AF?

If the message continues, have the whole home vent run cleaned by a venting specialist. A clogged vent is a fire risk. Unplug it or switch the breaker off before you remove any panel. Don't test or replace wiring, control boards, heating elements or motors under power. If you see scorching, smell burning, or the breaker trips again, leave it off and call a qualified appliance technician or electrician.

Whirlpool Dryer Error Code AF / Check Vent: Restricted airflow

What AF means

The lint screen or vent is clogged, or the vent is crushed, kinked or has too many turns. The dryer keeps running, but drying takes longer.

Also shown as: Check Vent, depending on the model.

Likely causes

Full lint screen
Lint in the vent
Crushed or kinked vent
Clogged outside hood

Safe first checks

Clean the lint screen.
Unplug the dryer, pull it out and make sure the vent from the dryer to the wall isn't crushed, kinked or full of lint.
Run the dryer 5–10 minutes and feel the air at the outside hood. If it's weaker than a hair dryer on high, clean the whole vent run and the hood.

When to stop

If the message continues, have the whole home vent run cleaned by a venting specialist. A clogged vent is a fire risk.

Checked against: Whirlpool Product Help: AF or Check Vent (dryer). Codes can differ by model and year, so confirm with your owner's manual.