WHIRLPOOL WDTA50SAHZ Not Cleaning Top Rack

Dishwasher Diverter Motor

The diverter motor is responsible for rotating the internal disc that directs water to the upper wash zone. If this motor fails due to an internal seal leak or electrical short, water flow remains trapped at the lower spray arm, resulting in zero cleaning action for the top rack. This is a high-failure component in the Whirlpool tall-tub dishwasher platform.

SKU: WPW10537723

Upper Wash Arm Manifold / Feed Tube

This assembly transports water from the pump to the upper rack docking station. Cracks in the plastic tubing or a degraded rubber seal at the docking port will cause a loss of water pressure before it reaches the spray arm, leading to poor cleaning results even if the diverter is functioning correctly.

SKU: WPW10815152

Upper Wash Arm Assembly

Whirlpool upper spray arms are prone to splitting at the ultrasonic-welded seams. When the seam opens, the arm loses the internal pressure required to rotate and spray effectively, essentially 'dribbling' water rather than jetting it onto the dishes.