Dishwasher runs but dishes come out dirty or with food residue.

Safety first: Turn off power before removing spray arms.

• Check loading: Ensure dishes are not blocking the Sharp spray arms and that large items do not shield smaller ones.
• Clean spray arms: Remove upper and lower spray arms and flush them under running water. Use a toothpick to clear blocked jets.
• Use proper detergent: Use high-quality dishwasher detergent and ensure the dispenser door opens freely.
• Verify heating: After a hot cycle, check if the interior is warm. If not, investigate heater issues as described in heater-related faults.