Dishwasher shows E15 and may not start; sometimes accompanied by beeping and drain pump operation.

Safety first: Turn off power and water supply. Expect water to spill when moving the appliance.

• Remove water from base: Pull the dishwasher out and tilt it slightly backward to drain water from the base tray onto towels. This may temporarily clear E15.
• Inspect float switch: Remove the base cover and check the Sharp float switch for correct movement and cleanliness. Ensure it is not stuck in the up position.
• Locate leak source: Run a short fill cycle while observing the internal components (with panels removed) to identify drips from hoses, sump, or side tanks.
• Repair leak: Tighten hose clamps, replace cracked hoses or side tanks, or replace the sump seal as needed.
• Reassemble and test: After repairs, ensure the base is dry, reassemble, and run a full cycle to confirm no further leaks.