ErrorCodeDoctor
Whirlpool Dryer AF / F4 E3 error code
The AF or F4 E3 code means your Whirlpool dryer detected that airflow through the exhaust system is restricted. This is caused by a clogged lint screen, a blocked or crushed exhaust vent, or a vent with too many turns reducing airflow. The dryer will continue to run while this code is present but drying performance will be poor and overheating is a risk. Touch any key to clear the code and return to the estimated time remaining — but the underlying airflow issue must be addressed to prevent recurrence.
Common causes
- Lint screen is clogged with lint and has not been cleaned
- Exhaust vent is blocked with lint buildup inside the duct
- Exhaust hose is crushed, kinked, or has too many 90-degree bends reducing airflow
- Outside exhaust vent flapper is blocked with lint or debris
How to fix it
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1
Remove and thoroughly clean the lint screen — wash with warm water and a soft brush then let it dry before reinstalling
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2
Check the exhaust hose at the back of the dryer and straighten any kinks or crushes
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3
Inspect the outside exhaust vent flapper and remove any visible lint or debris
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4
If the vent duct inside the wall is blocked contact a professional dryer vent cleaning service
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5
Touch any key to clear the AF or F4 E3 code from the display
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6
If the code returns after cleaning the vent system contact a qualified technician or schedule service
Related Whirlpool Dryer error codes
L2 / F4 E4
Low or no voltage detected on one leg of the power supply — the heater cannot turn on
PF
A power failure interrupted the drying cycle
Loc
Control Lock has been activated — the dryer will not start or operate
F# E# (all other codes)
An internal fault was detected — the dryer control has detected a problem that requires service