Washer displays F09 or F9, may overfill or not sense water level correctly, sometimes combined with long drain issues.

Safety first: Unplug the washer and turn off both hot and cold water supply valves before working on hoses or valves.

Step-by-step:

• Check water level: If the tub is overfilled, manually bail out water or run a drain/spin if possible. Do not allow water to overflow onto the floor.
• Inspect inlet valves: Turn off water supply valves. Remove the hoses from the back of the washer and check the inlet screens for debris. Clean with a soft brush.
• Check for valve sticking: With hoses removed and power disconnected, inspect the inlet valve assembly for signs of cracking or mineral buildup. A valve that continues to let water in when power is off must be replaced.
• Inspect pressure system: As with F08, check the pressure hose and switch for blockages, kinks, or damage. Clear or replace as needed.
• Replace faulty parts: If water continues to enter the washer when it is off, replace the water inlet valve assembly. If the level is not being sensed correctly despite a good valve, replace the pressure switch.

Warning: Persistent overflow conditions can cause severe water damage. If you cannot stop the water flow quickly, shut off the home water supply and call a technician.