E18
Gaggenau Insufficient Water Supply

Dishwasher does not fill or fills very slowly; E18 is displayed.

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Possible Causes

Closed or partially closed water tap, kinked inlet hose, clogged inlet filter, low household water pressure, faulty inlet valve

How to Fix / Troubleshooting

Safety: Close the water tap and disconnect power before removing hoses.

Steps:

  • Verify tap is open: Ensure the supply valve is fully open.
  • Check hose routing: Straighten any kinks or sharp bends in the inlet hose.
  • Clean inlet filter: Remove the hose from the tap and clean the mesh filter inside the hose connection.
  • Test water flow: Run water from the tap into a bucket to confirm adequate flow.
  • Inspect AquaStop valve: If water supply is good but the dishwasher still shows E18, the AquaStop/inlet valve may be defective and require replacement.
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Repair Difficulty

Easy 2/5

Required Part

AquaStop Inlet Valve / Hose Assembly
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