Dacor Internal Leak / Sump or Pump Seal Failure

Dishwasher leaks from underneath; water appears on the floor beneath the unit.

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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

Cracked Dacor sump assembly, Leaking circulation pump seal, Loose hose clamp, Split drain or fill hose

How to Fix / Troubleshooting

Safety first: Turn off power and water supply immediately to prevent further damage.

  • Pull out the dishwasher: Carefully slide the unit out from the cabinet to inspect underneath.
  • Identify leak source: Run a short cycle while observing the sump, circulation pump, drain pump, and hoses. Look for drips or spray.
  • Tighten clamps and fittings: Secure any loose hose clamps and fittings. Replace hoses that show cracks or bulges.
  • Replace leaking components: If water is seeping from the Dacor sump seal or pump housing, replace the sump assembly or pump as required.
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Repair Difficulty

Hard 4/5

Required Part

Dacor Sump Assembly
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