Electrolux Dryer Error Code F4

The F4 code indicates that the control board has detected a shorted temperature sensor circuit. When this short is found, the dryer sounds an alarm and locks out all heating modes to prevent unsafe operation. The fault will persist as long as the short exists in the sensor or its associated wiring. Pressing CANCEL will silence the alarm temporarily, but the code will return if a heat cycle is attempted.

Pressing the CANCEL key resets the control to non-cook mode and silences the alarm, but it does not fix the underlying problem. If you attempt to start a heating cycle again and the short is still present in the temperature sensor circuit, the F4 alarm will reactivate immediately. A permanent fix requires repairing or replacing the faulty sensor or wiring.

If only the temperature sensor needs replacement, parts typically range from around $15 to $50 depending on the specific model, making it one of the more affordable repairs. If the wiring harness requires repair or replacement, costs can rise to the $50 to $150 range including parts and labor. A control board replacement, if needed, is the most expensive scenario and can range from $150 to $350 or more with professional installation.

A knowledgeable DIYer can attempt to diagnose the F4 error by visually inspecting the sensor wiring harness for damage and checking connector terminals for corrosion. Testing the temperature sensor with a multimeter to check for a short circuit is a straightforward step. If the sensor or wiring is found to be faulty, replacing those components is generally within reach for someone comfortable working on appliances. If the wiring and sensor test correctly, a control board issue may be involved, which is more complex to address.

The dryer intentionally disables all heating modes when F4 is active, so running a heat cycle is not possible in this state. The safety lockout is designed to prevent unregulated temperatures that could pose a fire risk. You should not attempt to bypass the fault and restore heating without first resolving the sensor issue.