JennAir Odor / Biofilm Buildup

Dishwasher has a bad odor or smells musty when opened, especially after sitting closed.

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Possible Causes

Food debris in sump and filters, Standing water in low spots of drain hose, Mold growth on door gasket, Infrequent use

How to Fix / Troubleshooting

Safety: Turn off power if removing internal parts for deep cleaning.

  • Clean filters and sump: Remove and scrub filters with hot soapy water. Wipe out the sump area to remove trapped food.
  • Door gasket cleaning: Wipe the door gasket and folds with a mild bleach solution or dishwasher cleaner to remove mold and mildew.
  • Run cleaning cycle: Run an empty cycle with a dishwasher cleaner or a cup of white vinegar placed on the top rack.
  • Improve drainage: Ensure the drain hose has a proper high loop and no sags where water can stagnate.
  • Ventilation: Leave the door slightly ajar between cycles to allow the interior to dry.

Tip: Regular monthly cleaning cycles help prevent odors from returning.

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Repair Difficulty

Very Easy 1/5
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