Error code · Dryer

Maytag Dryer Check Vent, AF and F4E3: Restricted Airflow

Medium · inspection needed

Code: AF or F4E3 or Check Vent
Appliance: Dryer
Brand: Maytag
Warranty: 30-day workmanship

What AF or F4E3 or Check Vent means

On Maytag electric and gas dryers with an electronic control, Check Vent, AF and F4E3 all concern airflow. The Check Vent light, available for automatic cycles on certain models, reports the status of airflow through the dryer and its vent for the life of the dryer. If it comes on during the sensing phase, a blocked vent or low airflow was detected. F4E3 is the restricted air flow code: the lint screen or vent is clogged, crushed, kinked or has too many turns, and the dryer keeps running with the error showing.

Common causes of AF or F4E3 or Check Vent

Lint screen clogged
Vent line clogged, crushed or kinked
Vent run with too many turns
Outside vent hood blocked
Airflow sensing, once the vent is clear

✓ One safe check you can try

1. Pull out the lint screen and clean it, then rinse it if it has a film. 2. Check the vent hose behind the dryer for crushing or kinks. 3. Clear the outside vent hood of lint and debris. 4. Run an automatic cycle again and watch whether the Check Vent light or F4E3 returns.

! Why to stop there

A blocked vent is the most common reason, but a clear vent with a code left points to the airflow sensing
We check airflow at the outside hood and test the sensor
A clear vent with the warning still on points at the sensing parts, which we check with an airflow test

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Dryer codes

F2E5Maytag Dryer Code F2E5: Control Panel Communication F3 E4Maytag Dryer Code F3 E4: Sensor Circuit Needing a Reset F3E1Maytag Dryer Code F3E1: Exhaust Thermistor Out of Range F3E2Maytag Dryer Code F3E2: Moisture Data Missing for Five Loads F3E3Maytag Dryer Code F3E3: Inlet Thermistor Reading Low or High F3E5Maytag Dryer Code F3E5: Five Loads in a Row Without Moisture Data F4E1Maytag Dryer Code F4E1: Heater System Check With Relays F6E1Maytag Dryer Code F6E1: Control Board to Touchpad Link

AF or F4E3 or Check VentAF or F4E3 or Check Vent questions

Is a Check Vent light a fire risk?

A clogged vent holds heat and lint inside the dryer, so it should be cleared promptly. Even though the dryer keeps running, stop using it until the vent is clear.

How do I know if my vent run is too long?

A vent with many turns or a long path restricts airflow even when clean. We measure what the dryer actually gets and tell you what would improve it.

The code came back after I cleaned the vent. Now what?

Then the vent may not be the whole story. We check airflow at the hood and test the sensing parts, using your cleaned vent as the starting point.

Book a visit

Still seeing AF or F4E3 or Check Vent?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 936-6390