Dishwasher leaves detergent tablet partially undissolved in the dispenser cup.

Safety first: Turn off power before inspecting moving parts.

• Check dispenser door: Run a short cycle and open the door mid-cycle (after disconnecting power) to see if the detergent dispenser door has opened. If not, test and replace the dispenser assembly.
• Clean spray arms: Ensure the upper spray arm is not clogged and can direct water toward the dispenser area.
• Load correctly: Avoid placing large items directly in front of the dispenser that could block the detergent from entering the wash.
• Verify water temperature: Ensure hot water is supplied to the dishwasher as low temperature can slow tablet dissolution.