AF stands for Airflow Fault. The dryer’s sensors detected that air isn’t moving through the exhaust system the way it should, and a clogged lint screen or blocked vent hose is behind nearly every case.
Brand: Maytag
Maytag Dryer Error Code AF (Airflow Fault)
AF means the dryer detected restricted exhaust airflow, almost always a clogged lint screen or blocked vent.
Meaning
Possible causes
No cause is certain until it has been checked on the appliance.
- Very likely Lint screen clogged or not fully seated
- Very likely Exhaust vent hose clogged with lint
- Likely Vent hose crushed, kinked, or too long
- Possible Outside vent cap blocked or flap stuck closed
First checks
- Remove and clean the lint screen, then confirm it sits flush when reinserted.
- Disconnect the vent hose from the back of the dryer and check it for lint buildup.
- Check the full vent run to the exterior wall cap for kinks or crushed sections.
- Confirm the exterior vent hood flap opens freely when the dryer runs.
What not to do
- Ignoring a repeat AF code, each recurrence means the fire risk from lint buildup is ongoing.
- Using screws to attach vent sections, they catch lint and accelerate clogging.
An error code varies by brand
The same code can have a different meaning depending on the brand and model. Always check your appliance's manual before acting.
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When to call a professional
If the simple checks didn’t solve it, if the fix involves electrical wiring, gas, or the refrigerant circuit, or if you have any doubt at all: stop there and hand the appliance to a qualified repair professional.