Dishwasher stops mid-cycle, attempts to drain continuously, and E4 is displayed. Sometimes a beeping alarm sounds and the machine will not accept new programs.

Safety first: Disconnect power and turn off the water supply immediately. Do not continue running the dishwasher if an overflow is suspected.

• Check for visible leaks: Look around the sides and front of the dishwasher for water on the floor. Mop up any standing water.
• Tip the machine (if safe): Carefully pull the dishwasher out and tilt it about 45° backwards to allow water in the base tray to drain out onto towels. This may temporarily reset the float switch.
• Remove base panel: Once dry and unplugged, remove the lower front or bottom panel to inspect the base tray. Locate the polystyrene or plastic float and micro-switch assembly.
• Inspect float switch: Ensure the float moves freely and is not stuck by grease or debris. Clean and dry the area thoroughly.
• Find the source of the leak: Run a short cycle with the panels off (keeping clear of live parts) and observe. Common leak points include the door seal, circulation pump seal, heater connections, and inlet or drain hoses.
• Tighten or replace components: Tighten hose clamps, replace cracked hoses, and renew worn door gaskets or pump seals as needed.
• If the inlet valve is overfilling: Replace the water inlet valve, as a valve that does not close fully can cause repeated flooding.