Washer-dryer displays F20; unit does not fill or fills very slowly.

Safety first: Turn off power and water supply before disconnecting hoses.

• Check water supply: Ensure both hot and cold faucets are fully open. Verify household water pressure is adequate.
• Inspect hoses: Pull the unit forward and check that inlet hoses are not kinked or crushed. Straighten or replace as needed.
• Clean inlet screens: Turn off water, remove hoses from the back of the washer-dryer, and inspect the small screens inside the valve ports. Clean debris with a soft brush; do not damage the screens.
• Test inlet valve: With power disconnected, measure resistance of each valve coil. Replace the water inlet valve assembly if any coil is open or if the valve does not open when energized during a test cycle.
• Flow meter (if present): Some KitchenAid combos use a flow meter in the fill line. Inspect its wiring and replace if the control does not detect water flow despite proper pressure and valve operation.
• Run a test fill: Reconnect hoses, restore power, and run a quick wash to confirm proper filling and that F20 is cleared.