Washer attempts to fill but quickly shows F04; sometimes water is seen in the drum when it should be empty; may also trigger continuous drain.

Safety first: Unplug the appliance and turn off water supply. Be prepared for water spillage.

F04 indicates the control thinks the tub is overfilled or already full.

• Drain the machine: Use the emergency drain hose or pump filter at the front bottom to remove water from the tub.
• Access pressure switch: Remove the top cover. The pressure switch is a round device with a small rubber hose attached.
• Check pressure hose: Inspect the thin rubber hose for kinks or blockages. Blow gently through the hose (disconnected from the switch) to clear debris.
• Clean pressure chamber: Clean the chamber where the hose connects to the tub of sludge and detergent build-up.
• Test the switch: Blow into the switch and listen for clicks. If no clicks are heard, replace it.
• Wiring check: Ensure the electrical connector on the switch is secure.