Whirlpool / Maytag / KitchenAid / Amana · Dryer error code

AF / F4E3 / Check VentRestricted airflow

Cross-checked Power off, standard tools

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Related diagnostic guides

Guide · Dryer

Dryer takes too long / vent restriction

Slow drying with heat present is almost always airflow. Check the whole exhaust path and its length before suspecting parts, then look at the moisture sensor and heat cycling.

4 steps ~45 mineasy

Install · Dryer

Dryer vent installation: materials, length, elbows and termination

Use 4 in rigid or semi-rigid metal duct with a smooth interior, keep the run within the code or manufacturer limit (the model code limit is 35 ft, reduced for each elbow, unless the dryer maker allows longer), and terminate outside with a backdraft damper and no screen. Never vent into an attic, crawl space or wall cavity.

5 steps ~120 minmoderate

Guide · Dryer