Smart Inverter is an energy saving technology that eliminates wasted operation by efficiently controlling energy use. Its revolutionary water proof motor doesn't corrode and is the most durable one in its league. TurboDrum enables the most powerful wash and removes the toughest dirt through a strong water stream of rotating drum and pulsator in the opposite direction. If an error occurs, you can use the LG App or make a phone call to the LG Service center. A diagnosis can then be made resulting in less time wasted, less inconvenience and unnecessary visits. LG’s Auto Pre Wash is the easiest option to clear stain-removal concern. With one touch, tough stains are ready to be gone. Let your hands free.