Electrolux Freezer Error Code UI

The UI error code means the main control board has detected an incorrect or unrecognized user interface board. This is a board compatibility or communication fault. It commonly occurs after a parts replacement using the wrong board, or due to a wiring or connector problem between the two boards. The freezer may not operate normally until the issue is resolved.

A UI error indicates a control system fault, and the freezer may not regulate temperature reliably while this code is active. Continuing to store food in a freezer displaying this error carries a risk of improper cooling without any visible warning. It is best to resolve the error before relying on the unit for food storage.

A power reset by unplugging the freezer for a few minutes may temporarily clear the code if the fault was caused by a transient communication glitch between boards. However, if the underlying cause is an incompatible board or a hardware failure, the UI error will return after power is restored. A reset alone is not a fix for a true board mismatch or wiring fault.

Some causes of the UI error are DIY-accessible, such as reseating a loose wiring harness connector or cleaning corroded contacts. However, if the error is caused by an incorrect or failed board, replacing the user interface board or main control board requires basic appliance repair skills and comfort working with electrical components. Always unplug the freezer before inspecting or handling any internal boards or wiring.

If the fix involves only reseating a connector, there is no parts cost. A replacement user interface board typically costs in the range of $50 to $150 depending on the model. A main control board replacement can range from $100 to $300 or more for parts alone. Adding professional labor will increase the total repair cost.