Dishwasher indicates spray arm or diverter error; poor coverage on certain rack levels.

Safety First: Turn off power before removing internal components.

Steps:

• Check spray arm movement: Spin each spray arm by hand. They should rotate freely without hitting dishes or racks.
• Inspect for cracks: Remove spray arms and inspect for splits, missing end caps, or clogged jets. Replace damaged arms.
• Verify proper installation: Ensure spray arms are fully seated on their hubs and locked in place.
• Diverter check: If arms are fine but certain zones never spray, inspect and test the diverter assembly as in F9E1.