F21Warning
Whirlpool Dryer F21 Error Code
Airflow is restricted, causing longer drying times and potential overheating.
Common causes
- Lint buildup in vent system
- Compressed vent hose
- Foreign object in blower wheel
How to fix it
- Unplug dryer and remove front panel to access blower housing.
- Inspect blower wheel for debris or damage.
- Clean entire vent path from dryer to outside.
⚠ When to call a pro: If no blockage found, blower motor may be failing.
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Always unplug the appliance (and turn off the water for washers/dishwashers) before inspecting. These guides are for information only and are not a substitute for a professional repair.