E9
Bertazzoni Diverter Valve / Spray Zone Control Error

Dishwasher shows E9; unit may stop with water in the tub and no further progress.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Stuck or failed diverter valve motor, Blocked diverter disc with debris, Faulty position sensor in diverter assembly, Wiring harness issue to diverter

How to Fix / Troubleshooting

Safety first: Turn off power and water before accessing the bottom of the dishwasher.

  • 1. Listen for diverter operation: During the wash phase, the diverter should periodically change spray zones. If you hear repeated clicking or grinding, the diverter may be jammed.
  • 2. Access diverter assembly: Remove the toe-kick and bottom panel. The diverter valve is typically attached to the sump or circulation pump outlet.
  • 3. Inspect for debris: Remove the diverter cover and check for broken glass, seeds, or plastic pieces obstructing the diverter disc. Clean thoroughly.
  • 4. Test diverter motor: With a multimeter, check the motor coil for continuity. Replace the diverter assembly if open or if the position sensor is faulty.
  • 5. Reassemble and test: Reinstall components, restore power, and run a test cycle to confirm normal operation.

If E9 returns, the control board may not be reading the diverter position correctly and may need professional evaluation.

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Repair Difficulty

Hard 4/5

Required Part

Diverter Valve Assembly
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