KitchenAid
Lower Spray Arm or Sump Restriction
Dishwasher lower rack not cleaning well; heavy soil remains on bottom rack items.
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Possible Causes
Clogged lower spray arm, debris in sump restricting flow, diverter stuck in upper position, weak circulation pump
How to Fix / Troubleshooting
Safety First: Turn off power before disassembly.
Clean lower spray arm and sump:
- Remove and clean the lower spray arm and filters.
- Inspect the sump for debris and remove any obstructions.
Test operation:
- Run a cycle and observe spray arm movement if possible. If water flow is weak, the circulation pump may need replacement.
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Repair Difficulty
Easy
2/5
Required Part
Lower Spray Arm
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