F09Warning
Whirlpool Dryer F09 Error Code
The high-limit thermostat has tripped due to overheating, indicating restricted airflow or faulty component.
Common causes
- Clogged vent or lint buildup
- Failed high-limit thermostat
- Failed blower motor reducing airflow
How to fix it
- Clean lint filter and vent exhaust duct thoroughly.
- Test high-limit thermostat with multimeter (should be closed).
- Replace thermostat if open at room temperature.
⚠ When to call a pro: If thermostat repeatedly trips, inspect blower motor and venting.
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.