AF
Maytag Dryer
Severity: ModerateWhat Does This Error Mean?
Maytag AF means Restricted Airflow.
The control board has decided your dryer is not exhausting heat fast enough — usually because the lint screen, the flexible hose behind the dryer, or the wall vent leading outside is partially or fully blocked.
The dryer keeps running but laundry takes far longer than normal and the cabinet runs hot.
Restricted airflow is the leading cause of dryer fires, so do not ignore this code.
Affected Models
- Maytag Bravos top-load dryer
- Maytag Centennial dryer
- Maytag Maxima front-load dryer
- Maytag MEDB835 series
- Maytag MEDX655 series
Common Causes
- Lint screen full or blocked with fabric softener residue
- Flexible hose behind the dryer crushed against the wall
- Outside vent hood flap stuck closed by lint or a bird's nest
- Long, kinked, or undersized exhaust duct between the dryer and the wall
- Booster fan in a long duct run failed
- Heating element starting to short and triggering false high-temperature trips
How to Fix It
-
Pull and clean the lint screen.
Slide the screen out and remove every visible fibre.
Then rinse it under warm water with dish soap.
Fabric softener leaves an invisible film that water beads off — if water beads instead of soaking through, the screen is blocking airflow even when it looks clean. -
Check the flex hose at the back of the dryer.
Pull the dryer out about a foot.
Look at the silver foil hose between the dryer and the wall.
Crushed, kinked, or sagging hose chokes airflow.
Replace bent foil hose with a short length of rigid metal duct or semi-rigid aluminium. -
Clean the wall duct.
Disconnect the hose from the wall outlet.
Use a dryer vent brush kit (15-30 USD) to sweep the duct from inside to outside.
You will be shocked how much lint comes out, even on a duct you cleaned a year ago. -
Inspect the outside vent hood.
Walk outside to the louvred hood on the wall.
The flap should swing open easily when the dryer is running.
Stuck closed by lint, paint, or a nest is very common.
Clean and free the flap so it moves under air pressure alone. -
Run a short load to test.
After cleaning, start a 20-minute timed dry on heat.
Walk to the outside vent and feel the airflow at the hood.
Strong, warm air = restriction cleared.
Weak airflow = there is still a blockage somewhere in the duct run. -
If AF returns immediately, check the heating element.
A partially shorted element overheats and trips the high-limit thermostat, which the board reads as restricted airflow.
Test the element with a multimeter on ohms — typical reading is 8-15 ohms.
Out of range or 0 ohms means a faulty element.
Frequently Asked Questions
Does the dryer keep running with AF showing?
Yes, on most models the dryer continues to run.
That is exactly why AF is dangerous — the dryer keeps adding heat to a poorly ventilated cabinet, and lint accumulates faster than normal.
Stop the cycle, clear the airflow path, and only then resume.
How often should I clean the dryer vent?
Once a year for a typical household, more often if you have pets, run heavy fabrics like towels, or have a long duct run.
If clothes take more than one cycle to dry, it is already overdue.