Samsung · Washing Machines
A thumping sound during operation can be normal with heavy wash loads. However, if it persists, it may indicate that the washer is unbalanced and needs adjustment.
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If the thumping sound continues, stop the washer and redistribute the laundry load evenly inside the drum.
Ensure the washing machine is placed on a flat, stable, and level surface.
Avoid overloading the washer, especially with very heavy items.