Whirlpool Dryer AF (Check Vent) Error Code

An AF code means restricted air flow: the lint screen or the vent is clogged, or the vent may be crushed, kinked or have too many turns. On commercial-grade residential Whirlpool dryers this is shown as AF. On certain other dryer models the same problem can light a Check Vent indicator.

The Check Vent light

Check Vent is available for Automatic Cycles only, on certain models. During the sensing phase at the start of a cycle, the light comes on if a blocked vent or low airflow is detected, and it stays on for that whole cycle. It clears when the cycle ends, when you touch Power, or when you open the door.

The dryer keeps running while AF or the light is present, but poor airflow can lengthen dry times and affect performance. Touching any key clears the AF code from the display.

What to try

• Clean the lint screen.
• Look for a crushed or kinked vent run between the dryer and the wall.
• Confirm that the vent run is free of lint and debris.
• Confirm that the outside exhaust hood is free of lint and debris.
• Check the vent system against the recommended run length and number of elbows in the installation instructions.

To test airflow, run the dryer for 5-10 minutes and hold a hand under the outside hood. If the air movement is weaker than a hair dryer on high, clean the lint from the whole system and the hood.

Next, select a Timed Dry heated cycle and restart. If the message persists, have the entire home venting run cleaned by a venting specialist.

Related codes

• do is a door-open code on compact heat pump dryers.
• E1 is a different dryer code that starts with a power reset.

Whirlpool dryer service in Los Angeles

For a Whirlpool dryer in Los Angeles that keeps showing AF after the vent checks, call (310) 448-6692 or open dryer repair. Have the code, the model number and what the vent and hood looked like ready.

Source: Whirlpool Product Help: AF Error Code Commercial Dryer