Safety first: Turn off water supply and unplug the unit before disconnecting hoses.

Check water supply: Ensure both hot and cold faucets are fully open and that household water pressure is adequate.
Inspect inlet hoses: Turn off water, disconnect hoses from the back of the combo, and check the small screens inside the water inlet valve for debris. Clean with a soft brush.
Check for kinks: Make sure hoses are not kinked or crushed behind the unit.
Test fill: Reconnect hoses, restore power and water, and start a fill cycle. Listen for the valve opening and observe water flow.
Valve testing: If no water enters, unplug the unit, remove the top or rear panel, and test the inlet valve solenoids for proper resistance with a multimeter. Replace the water inlet valve assembly if defective.
Verify pressure sensor: If the tub overfills or F8 appears with correct water flow, test the water level pressure switch as described for F3.

Washer-dryer combo displays F8 and may not fill or may overfill.

Possible Causes