Whirlpool
Biofilm / Bacterial Growth in Tub and Sump
Dishwasher has a strong musty or moldy odor when opened.
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Possible Causes
Food residue buildup, Infrequent use, Clogged filters, Standing water in sump
How to Fix / Troubleshooting
Safety First: Use only dishwasher-safe cleaners; avoid mixing chemicals.
- Clean filters: Remove and thoroughly wash filters with hot soapy water.
- Clean interior: Wipe door seals, corners, and the bottom of the tub with a mild bleach solution or dishwasher cleaner (follow label directions).
- Run cleaning cycle: Run a hot cycle with a dishwasher cleaner or a cup of white vinegar placed upright on the top rack (no dishes).
- Leave door ajar: After cycles, leave the door slightly open to allow drying and prevent odor buildup.
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Repair Difficulty
Very Easy
1/5
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