Hotpoint Refrigerator Error Code UU

The UU code means the User Interface module and the Main Control Board are not communicating properly. This can occur due to a loose wiring connection, a damaged harness, or an incompatible replacement module. The refrigerator displays this code to alert you that the two primary control components have lost their data link. A technician should inspect the wiring and confirm module compatibility to resolve it.

Unplugging the refrigerator for a few minutes and restoring power may temporarily clear the UU code, but it will return if the underlying communication problem is not fixed. A reset does not repair a loose connector, a damaged wire, or an incompatible module. If the code comes back after a reset, a proper diagnosis is needed to find the root cause.

Repair costs vary depending on the cause. If a wiring harness simply needs to be reseated, the cost may only be a service call fee, typically in the range of $75 to $150. Replacing a User Interface module or a Main Control Board can add $100 to $350 or more in parts, depending on the model, plus labor. Getting a diagnostic visit first is the best way to understand the actual repair cost before committing to parts.

A homeowner comfortable with appliance repair can check for loose or disconnected wire harness connectors between the display panel and the control board, which is a no-parts fix if a connector has simply come loose. However, if the cause is a damaged wire, incorrect module, or a failed control board, professional repair is recommended. Working with control boards involves electrical components, so always unplug the refrigerator before inspecting any wiring.

The UU error indicates a control communication failure, which means the refrigerator may not be operating correctly or responding to temperature commands. Food safety could be at risk if cooling is compromised. It is best to monitor the actual temperature inside the refrigerator and arrange for a repair as soon as possible rather than relying on the display.