Dishwasher shows F4 and stops; water level appears too high or water is not pumped out correctly.

Safety first: Unplug the appliance and close the water tap before removing any panels.

• Clean sump and filters: Remove and clean all filters. Check the sump area for grease and debris that could block the pressure chamber inlet.
• Locate pressure chamber: On many Fagor dishwashers, the pressure chamber/air trap is mounted on the side of the tub or integrated into the sump. Remove the side panel to access it.
• Clear blockages: Detach the small hose from the pressure switch and blow gently through it to clear any blockage. Rinse the chamber with hot water to dissolve grease.
• Inspect pressure switch: Check for signs of moisture inside the switch or corrosion on the terminals. Replace the Fagor pressure switch or analog sensor if damaged.
• Test run: Reassemble, restore power, and run a rinse cycle. If F4 persists, the sensor or control board may require professional diagnosis.