Dishwasher detergent tablet remains undissolved in the dispenser at the end of the cycle.

Safety first: Turn off the dishwasher before inspecting the dispenser and spray arms.

• 1. Check dispenser door: Run a short cycle and open the door mid-way to confirm the dispenser lid has opened. If not, see dispenser faults (E19).
• 2. Spray arm alignment: Ensure the upper spray arm is not loose or blocked and that it can spray water towards the dispenser area.
• 3. Loading pattern: Avoid placing large plates or trays directly in front of the dispenser, which can block the tablet from dropping into the wash area.
• 4. Water temperature: Use a hotter program if tablets are not dissolving fully, especially in cold inlet conditions.
• 5. Try powder or gel: As a test, use powder or gel detergent to see if cleaning improves, which may indicate a dispenser or spray pattern issue.