F20Warning
Whirlpool Refrigerator F20 Error Code
The ice maker mold thermistor is defective, affecting ice production.
Common causes
- Bad thermistor
- Wiring break
- Ice maker module failure
How to fix it
- Unplug refrigerator and inspect ice maker harness
- Test thermistor resistance
- Clear ice maker error by cycling power
⚠ When to call a pro: If thermistor tests bad, replace ice maker assembly or call a technician.
Part links are affiliate links — as an Amazon Associate we may earn a small commission at no extra cost to you.
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.