Wiring connection is OK?
The Impeller of Washing Pump is locked.
The rotor of Washing Motor is locked.
The Blade is locked.
Check the wiring connection.
Replace the cause of restriction.
Replace the Washing Motor. 
Replace the PCB.
LDS4821(WW specifications
The LG Electronics LDS4821 is an innovative dishwasher that stands out for its efficiency, design, and cutting-edge features. Designed to streamline your dishwashing experience, this model is engineered with the modern home in mind, offering a blend of functionality and style.One of the key features of the LDS4821 is its spacious interior, which can accommodate up to 14 place settings. This ensures that even the largest family meals can be cleaned in one go. The adjustable third rack provides extra space for small utensils and dishes, maximizing the usability of the interior and allowing for flexible loading options.
The dishwasher employs LG's advanced Smart Technology, which includes Smart Diagnosis. This feature utilizes a smartphone app to assist users in troubleshooting any issues that may arise, providing convenience and saving time on service calls. Additionally, the LDS4821 is compatible with Wi-Fi connectivity, allowing users to monitor and control their dishwasher remotely, ensuring that their cooking and cleaning routines fit seamlessly into any lifestyle.
Energy efficiency is another hallmark of the LDS4821. It is Energy Star certified, meaning it consumes less water and energy than traditional dishwashers. This not only helps save on utility bills but also contributes to a more sustainable household. The model features a Direct Drive motor, which operates with reduced noise and vibration, providing a quieter experience during operation, making it suitable for open-concept living spaces.
The dishwasher includes multiple wash cycles and options, catering to various needs. The TurboCycle delivers a high-pressure wash in a short time for those often-used dishes, while the Heavy Duty cycle is tailored for tougher, heavily soiled items. The rinse aid dispenser enhances drying by preventing water spots, delivering a spotlessly clean finish.
The LDS4821 also boasts a sleek, modern design, featuring a stainless-steel exterior that not only gives it an appealing look but ensures durability and easy maintenance. The hidden control panel adds to the aesthetic appeal while providing easy access to all functions.
In summary, the LG Electronics LDS4821 offers a robust combination of capacity, smart technology, energy efficiency, and style, making it a compelling choice for those seeking a reliable and modern dishwasher solution. With its commitment to high performance and innovation, LG continues to be at the forefront of home appliance technology.