E19
Gaggenau Water Softener / Regeneration Valve Fault

Dishwasher shows E19, often related to the water softener or regeneration system.

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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

Defective regeneration valve, blocked softener channels, wiring fault to softener valve, control board output failure

How to Fix / Troubleshooting

Safety: Disconnect power and water.

Steps:

  • Check salt level: Ensure the salt reservoir is filled with dishwasher salt and cap is properly closed.
  • Access softener valve: The regeneration valve is usually mounted on or near the water softener tank/heat exchanger. Remove the side panel to locate it.
  • Inspect wiring: Verify the connector to the valve is secure and wires are intact.
  • Test valve coil: Measure resistance across the valve coil. An open circuit indicates a failed valve that must be replaced.
  • Replace regeneration valve: Install the correct Gaggenau valve and check for leaks.
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Repair Difficulty

Medium 3/5

Required Part

Regeneration Valve (Water Softener Valve)
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