LG · Laundry · WM4000HBA · Owner's Manual
The required accessory sold separately is a set of Hot and Cold Water Hoses. Optional accessories sold separately include a Pedestal, Pedestal Washer, Stacking Kit, and Extension Drain Hose.
Source: LG WM4000HBA Owner's Manual, extracted pages 7-8
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Product Overview and Parts Identification
This section helps you identify the washer’s main parts, the accessories that come with it, the items you must buy separately, and the basic product specifications.
Product features and important note The illustrations in the manual may not exactly match your washer, and the components and accessories may change without prior notice for product improvement.
LG WM4000HBA Owner's Manual, extracted pages 7-8Operation Problems: Leaks, Detergent Dispensing, Filling, and Cycle Behavior
This section helps you troubleshoot common washer problems such as leaks, detergent not dispensing correctly, filling issues, pauses during a cycle, and the washer stopping or not starting.
Banging noise when the washer is filling with water
LG WM4000HBA Owner's Manual, extracted pages 46-48This answer is only published when it has a reviewed answer status and a source citation back to the manual text.