What do I do if my dryer displays an 'AF' code?

The 'AF' code indicates a low airflow condition, but the dryer will continue to run when this code is present. Press any key to clear the code, then clean the lint screen, check that the vent run is not crushed or kinked, and confirm the exterior exhaust hood is free of lint and debris. If the message persists, have your entire home venting run cleaned. (Page 28)