Dishwasher fails to fill with water, stops shortly after start, and may show F04 or 4 flashes. You may hear a brief hum but no water enters.

Safety: Turn off the water supply tap and disconnect power before removing hoses.

Check water supply:

• Ensure the kitchen tap feeding the dishwasher is fully open.
• Disconnect the inlet hose from the tap and run it into a bucket briefly to confirm good water flow from the tap.

Clean inlet filters:

• Inspect the small mesh filter at the hose end and at the valve end (on some Indesit models). Rinse under running water to remove limescale and debris.
• Check the hose for kinks or crushing behind the machine.

Valve inspection:

• Pull the dishwasher out and access the inlet valve (often at the left side or rear base).
• Check the electrical connector is firmly seated and not corroded.
• If you have a multimeter, measure coil resistance; an open circuit indicates a failed valve.

Reassembly:

• Reconnect the hose, turn on the water, check for leaks, restore power, and run a fill test.

If water supply and filters are fine but F04 persists, the inlet valve assembly will likely need replacement.