A drain pump goes bad primarily due to physical mechanical obstruction, normal motor wear and tear, and electrical overheating. Over time, debris such as coins, paper clips, bobby pins, and heavy lint bypasses the tub filter and jams the pump impeller, forcing the electric motor to strain and overheat against resistance. Furthermore, continuous exposure to moisture, soapy water, and mineral scale buildup can degrade internal shaft seals, allowing water to leak into the motor housing and cause electrical short circuits, rust, and permanent motor burnout. Regular cleaning of the drain filter extends pump longevity significantly.
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