F18Serious
Bosch Dryer F18 Error Code
Excessive temperature detected inside the dryer, triggering a safety shut-off to prevent fire.
Common causes
- Lint buildup in ductwork
- Blocked air exhaust
- Faulty thermistor or thermostat
How to fix it
- Clean fluff filter and check exhaust duct for blockages.
- Ensure dryer has adequate ventilation around it.
- Reset dryer by unplugging for 30 minutes after cooling down.
⚠ When to call a pro: If error persists after cleaning and ventilation is good, have a technician check sensors and heating element.
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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.