Siemens Poor Wash Performance / Inadequate Cleaning

Dishwasher runs, but dishes come out dirty; food residues remain on plates and glasses.

Advertisements

Possible Causes

Clogged spray arms, dirty filters, low water temperature, weak circulation pump, incorrect loading blocking spray.

How to Fix / Troubleshooting

Safety first: Disconnect power before removing spray arms, especially if you need to work near sharp edges.

  • Step 1 – Clean filters:
    • Remove and thoroughly clean the filter assembly with hot water and a brush.
  • Step 2 – Clean spray arms:
    • Remove the upper and lower spray arms.
    • Rinse and clear all jets with a toothpick or a small brush.
    • Ensure they rotate freely once reinstalled.
  • Step 3 – Check loading:
    • Ensure large items are not blocking the rotation of the spray arms.
    • Do not nest bowls or stack dishes in a way that prevents water from reaching their surfaces.
  • Step 4 – Detergent and temperature:
    • Use high-quality dishwasher detergent and ensure the rinse aid dispenser is filled.
    • Run a hotter program (e.g., Intensive) to verify performance.
  • Step 5 – Circulation pump:
    • If cleaning and loading are correct, but spray pressure seems weak, the circulation pump may be worn and require replacement.

Regular maintenance cleaning with a dishwasher cleaner helps maintain optimal wash performance.

Advertisements

Video Guide

2 Videos

Repair Difficulty

Easy 2/5

Required Part

Spray Arms or Circulation Pump
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements