Error code reference

Electrolux Refrigerator Error Code UF

The control is not seeing the vent fan running properly (displayed as ER flash UF).

Electrolux codesElectrolux refrigerator codes

The control is not seeing the vent fan running properly (displayed as ER flash UF).

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What UF means on a Electrolux refrigerator

The UF error code (displayed as ER UF on the control panel) indicates the control board is not detecting proper operation from the vent fan. The control monitors the vent fan's speed or feedback signal during operation, and when it fails to see the expected response, it logs UF and may shut down or limit cooling function to protect the refrigerator. This points directly to the vent fan circuit, which includes the fan motor itself, the wiring harness connecting it to the control board, and the board's ability to receive that signal.

For homeowners, the vent fan moves air between compartments or across the evaporator coil to maintain consistent temperatures throughout the refrigerator. When this fan is not running as expected, your food may not stay at safe temperatures, especially in areas that rely on that airflow. You may notice warm spots, temperature swings, or the refrigerator running more than usual before the code appears.

The root cause can be a failed fan motor, a wiring problem between the fan and the control board, or in less common cases, a control board that has lost the ability to drive or read the fan circuit. Diagnosing which component is at fault requires checking voltage supply to the fan and continuity through the wiring harness.

Source: manufacturer service documentation.

Common causes of UF

  1. 01

    Failed vent fan motor

    Part replacement

    The vent fan motor itself has seized or burned out and is no longer spinning when the control board sends power to it. This is the most common cause of UF and the first component to physically inspect and test.

  2. 02

    Broken or disconnected wiring harness to the vent fan

    Wiring / connection

    The wiring between the vent fan motor and the control board can become frayed, pinched, or unplugged, preventing the control board from receiving any feedback signal from the fan. This can occur due to physical damage during a previous repair or from vibration over time.

  3. 03

    Fan blade obstructed or seized by ice buildup

    Wiring / connection

    Ice accumulation around the evaporator or fan housing can physically block the fan blade from turning, causing the motor to stall and the control board to detect no fan movement. This may also burn out the motor if the blockage persists long enough.

  4. 04

    Faulty control board

    Part replacement

    If the fan motor and wiring both test correctly, the control board may have failed in a way that prevents it from properly powering or reading the vent fan circuit. This is the least common cause and should only be suspected after ruling out the fan and wiring.

See the test procedure for each cause

Frequently asked questions about UF

What does the UF error code mean on an Electrolux refrigerator?
The UF code (shown as ER UF) means the control board is not detecting the vent fan running properly. The vent fan is responsible for circulating air through the refrigerator, and when the control board cannot confirm the fan is operating as expected, it triggers this fault. The fan motor, its wiring, or the control board are the components involved.
Is it safe to keep using my Electrolux refrigerator with the UF error code active?
Using the refrigerator with a UF code active is risky for food safety. The vent fan is critical for maintaining even temperatures throughout the compartments, and without it running properly, food may not stay at safe temperatures. You should check temperatures with a thermometer and transfer perishables if the refrigerator cannot hold below 40 degrees Fahrenheit while you diagnose the issue.
How do I fix the UF error code on an Electrolux refrigerator?
Start by locating the vent fan, usually behind an interior panel near the evaporator coil. Check for ice blocking the fan blade and defrost the unit manually if present. If no ice blockage is found, test the fan motor for continuity and verify voltage is reaching it from the control board. A motor that has no continuity or does not spin with proper voltage applied needs to be replaced. If the motor is functional, inspect the wiring harness for damage or loose connections.
How much does it cost to repair the UF error code on an Electrolux refrigerator?
If the vent fan motor is the cause, the part typically costs between $30 and $80 depending on the specific model, and it is a moderate DIY repair requiring panel removal. Professional labor to diagnose and replace the fan motor generally adds $100 to $200. If the control board is the faulty component, board prices range from $100 to $300 or more, making professional diagnosis worth the cost before purchasing the part.
Can ice cause the UF error code on an Electrolux refrigerator?
Yes, ice buildup around the evaporator or fan housing can physically block the vent fan blade and cause the UF code to appear. This can happen if the defrost system has failed or if the door has been left open repeatedly, allowing humid air to freeze around the fan. Manually defrosting the unit by unplugging it for 24 to 48 hours will clear the ice, but if the code returns, the underlying defrost system failure will need to be addressed.

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