Dishwasher leaves standing water in the bottom between cycles, even though it drains at the end.

Safety first: Disconnect power before working on plumbing.

• Inspect sink trap: Clean the sink trap and ensure water flows freely to prevent back-pressure.
• Check hose routing: Ensure the Maidaid drain hose has a high loop and is not submerged in standing water in the trap.
• Fit non-return valve: Install a suitable non-return valve in the drain line if not already present.
• Internal check valve: If fitted, inspect and clean the Maidaid internal check valve near the pump outlet. Replace if it does not close properly.