F04Serious
Electrolux Dryer F04 Error Code
The exhaust thermistor is out of range or failed.
Common causes
- Faulty thermistor
- Loose connection
- Short or open circuit
How to fix it
- Locate the exhaust thermistor (near vent).
- Test resistance with multimeter; compare to spec in service manual.
- Check wiring for damage.
⚠ When to call a pro: If thermistor is defective, replace it; if wiring is damaged, repair or call.
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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.