KitchenAid
Lower Spray Arm or Sump Restriction
The dishwasher's lower rack is not cleaning well; heavy soil remains on bottom rack items.
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Possible Causes
Clogged lower spray arm, debris in the sump restricting flow, diverter stuck in the 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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Video Guide
Repair Difficulty
Easy
2/5
Required Part
Lower Spray Arm
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