Dishwasher does not drain completely; a small pool of water remains under the filter after each cycle.

Safety first: Disconnect power before handling hoses.

• Understand normal level: A small amount of water under the Sharp filter is normal to keep seals wet. However, if water rises above the filter, there is a problem.
• Clean filters and sump: Remove debris that may restrict flow.
• Check drain hose height: Ensure the hose is installed at the correct height and has a proper high loop.
• Inspect check valve: If accessible, clean or replace the non-return valve in the sump or drain outlet.