LG Washer Error Code Uc

The Uc code means the washer has detected that the incoming supply voltage is outside its safe operating range, either below 176V or above 287V. The machine pauses the cycle automatically to protect its components. No manual reset is needed because the washer will resume on its own once voltage returns to the acceptable range of 187V to 276V. This is a power supply issue, not an internal washer fault.

The washer is designed to pause and not operate when it detects unsafe voltage levels, so the machine itself is protecting its components by stopping. Running the washer on a circuit with severely low or high voltage can damage the motor, control board, and other electronics over time. It is best to resolve the power supply issue before continuing to use the machine regularly.

Because Uc is a power supply error rather than a washer component failure, repair costs depend on what is wrong with the electrical system. Replacing a faulty outlet typically costs between $75 and $200 including labor. Electrical panel work or wiring repairs by a licensed electrician can range from $150 to $600 or more depending on the scope. If the issue is a utility grid problem, there may be no cost to the homeowner after reporting it to the power company.

Start by measuring the voltage at the wall outlet using a multimeter or a plug-in voltage monitor during machine operation. If the voltage is outside the 187V to 276V range, the issue is with your home's electrical system or the utility supply, not the washer itself. Check that the washer is on a dedicated circuit, that the outlet connections are tight, and contact an electrician if panel wiring or breaker connections are suspect. If the voltage is within range and the code still appears, contact LG service for further diagnostics.

A manual reset will not permanently clear the Uc error if the underlying voltage problem still exists. The code will reappear as soon as the machine detects the voltage is out of range again. The washer is designed to recover automatically once voltage returns to the 187V to 276V operating range, so the fix must address the power supply, not the washer itself.