Dishwasher displays E4 and may stop filling; sometimes accompanied by water remaining in the tub or overfilling symptoms.

Safety first: Disconnect power and turn off water supply before opening panels.

• Check for overfill: Open the door and see if water level is above the filter screen. If so, manually remove excess water with a cup and towels.
• Inspect float and float switch: Locate the float (usually in the tub floor). Ensure it moves freely up and down and is not stuck by debris or scale. Clean around it and test that it clicks the switch when lifted.
• Clean pressure chamber/hose (if equipped): Some Danby models use a small pressure hose from the tub to a sensor. Remove the side panel, locate the hose, and blow through it to clear soap or debris blockages.
• Reset and test: After cleaning, restore power and run a short cycle to see if E4 clears.
• If error persists: The float switch or water level sensor may be defective and require replacement. Ensure correct part number for your Danby model.