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

Safety first: Switch off the dishwasher before cleaning internal parts.

• Clean filters: Remove and wash all filters weekly to maintain flow.
• Clean spray arms: Remove upper and lower spray arms and clear all jets with a toothpick. Rinse thoroughly.
• Check loading: Avoid nesting bowls and stacking items so that water cannot reach surfaces. Ensure tall items do not block the spray arms.
• Verify heating: After 15–20 minutes of a hot cycle, open the door carefully to check if water is hot. If cold, investigate heater and NTC as described in heating faults.
• Use correct detergent: Use quality dishwasher tablets or powder and adjust dosage for water hardness.