F21Warning
Whirlpool Refrigerator F21 Error Code
The ice maker is not filling with water properly or too much water is being added.
Common causes
- Clogged water filter
- Faulty water valve
- Ice maker control issue
How to fix it
- Replace water filter if overdue
- Check for water flow at valve
- Inspect fill tube for ice blockage
⚠ When to call a pro: If water valve tests okay but code persists, the ice maker module may need replacement.
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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.