Dishwasher will not fill; cycle starts then quickly stops and displays E1.

Safety first: Disconnect power at the breaker and close the water supply valve before servicing. Allow internal components to cool.

Step-by-step checks:

• Verify water supply: Ensure the building’s hot water supply to the Champion dishwasher is turned on and that any external shutoff valves are fully open. Confirm adequate pressure (typically 20–25 psi minimum for commercial Champion units).
• Inspect inlet hose and strainer: Remove the inlet hose from the rear or side connection. Check the Champion inlet screen/strainer for debris (scale, rust, food particles). Clean with a soft brush and flush under running water. Reinstall securely.
• Test water inlet solenoid valve: Access the water inlet valve assembly (usually mounted at the base or rear). Check the coil connections for loose or burned terminals. With power off, measure coil resistance with a multimeter; an open circuit indicates a failed coil. Replace the Champion water inlet valve assembly if defective.
• Check water level sensor / pressure switch: Locate the water level sensor or pressure switch tubing from the wash tank. Inspect for kinks, blockages, or scale buildup. Clean or replace the sensor if it does not change state when the tank fills.
• Reset and test: Restore power and water, then run a fill cycle. If E1 persists after cleaning and verifying pressure, the inlet valve or level sensor is likely faulty and should be replaced.

When to call a technician: If you are not comfortable working with live water and electrical connections, or if line pressure is correct but the valve does not actuate even with proper voltage, contact a qualified Champion service technician.