Asko Biofilm / Mold Build-Up in Tub and Hoses

Washer has a strong musty or moldy odor inside drum

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Possible Causes

Frequent cold washes, Excess detergent use, Door kept closed between cycles, Build-up in Asko tub, door gasket, and drain hoses

How to Fix / Troubleshooting

Safety first: Use cleaning chemicals in a well-ventilated area and follow product instructions.

  • Step 1 – Clean gasket: Wipe the door boot gasket folds with a cloth soaked in a mild bleach solution or washer cleaner. Remove visible residue.
  • Step 2 – Run cleaning cycle: Run an empty hot cycle (90–95°C if available) with a washing machine cleaner or 1–2 cups of white vinegar (do not mix with bleach).
  • Step 3 – Clean detergent drawer: Remove the detergent dispenser drawer and scrub away mold and residue. Clean the housing as well.
  • Step 4 – Ventilate: After each wash, leave the door and detergent drawer slightly open to allow the Asko drum to dry.
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Repair Difficulty

Very Easy 1/5
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