F15 error, water dispenser not working (on dispenser models), no water flow when lever is pressed.

Safety first: Unplug the refrigerator and turn off the water supply before disconnecting any water lines.

Step-by-step checks:

• 1. Check water supply: Ensure the household tap feeding the refrigerator is fully open and the hose is not kinked.
• 2. Replace water filter: If fitted, replace the internal or external water filter according to Indesit specifications; a clogged filter can trigger flow errors.
• 3. Inspect for frozen lines: Feel the dispenser line in the freezer door. If very cold or solid, allow the door area to warm (set freezer slightly warmer temporarily) to thaw the line.
• 4. Test inlet valve: Access the rear lower panel and locate the water inlet valve. Check coil resistance; an open coil indicates a failed valve that must be replaced.

When to call a technician: If the valve and lines are good but F15 persists, the dispenser switch, flow sensor, or control board may require professional testing.