Dishwasher displays E7 and may not start or may stop shortly after starting.

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

• 1. Access pressure system: Remove the left or right side panel (depending on model) to access the side water matrix and pressure switch assembly.
• 2. Clean air trap and matrix: Detach the water matrix and air trap if accessible. Rinse thoroughly with hot water to remove grease and limescale that can block air passages.
• 3. Inspect pressure hose: Remove the small rubber hose between the sump/air trap and the pressure switch. Check for blockages or splits. Clean or replace as needed.
• 4. Test pressure switch: Using a multimeter, check continuity across the switch terminals while gently blowing into the pressure port. The contacts should change state. If not, replace the pressure switch.
• 5. Verify wiring: Ensure the harness from the pressure switch to the control board is intact and firmly connected.