LG Washer Error Code OF

OF stands for overflow error. It means the water level sensor detected a frequency below 20.70 kHz for 10 or more consecutive seconds, indicating the water inside the drum has risen to an abnormally high level. The washer automatically activates the drain pump in a 20-seconds-on, 4-seconds-off cycle to bring the water level back down to a safe threshold of 23.30 kHz. The most common cause is a water inlet valve that is not closing completely.

No, you should power off the washer as soon as the OF code appears. An overflowing washer poses a risk of water damage to your flooring and surrounding cabinetry. The machine does run an automatic drain routine when the code triggers, but shutting off power prevents any additional water from entering and limits potential damage while you investigate the cause.

Repair costs vary depending on the failed component. A replacement water inlet valve typically runs in the range of $25 to $80 for the part alone, while pressure sensors are generally in the $15 to $50 range. If you hire a technician, labor costs can add $100 to $200 or more to the total. Control board replacement, if needed, is the most expensive scenario and can range from $150 to $350 or higher for parts.

Start by powering off the machine immediately to halt any additional water entry. Once the washer has drained through its automatic pump cycle, inspect the water inlet valve for signs of continuous trickling when the machine is off. Also check the pressure sensor hose for kinks or blockages and clean the drain pump filter. If the inlet valve is confirmed to be leaking through, it will need to be replaced.

A reset may clear the code temporarily, but the error will return if the underlying cause is not resolved. If the inlet valve is faulty and continues letting water in, the sensor will detect the overflow condition again and re-trigger the code. A reset is only useful after the actual problem, such as a defective valve or blocked sensor hose, has been identified and corrected.