Monogram Biofilm / Mold Growth in Tub and Dispenser

Washer-dryer combo leaves a musty or moldy odor on clothes and inside the drum.

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Possible Causes

Detergent and fabric softener buildup, Infrequent hot washes, Door kept closed between cycles, Clogged drain leading to standing water

How to Fix / Troubleshooting

Safety first: Use only cleaning products approved for washing machines. Do not mix bleach with other cleaners.

Step-by-step cleaning:

  • 1. Run a tub clean cycle: Use the built-in tub clean program (if available) with a washer cleaner tablet or 1 cup of liquid chlorine bleach in the drum (no laundry).
  • 2. Clean the door gasket: Pull back the gasket folds and wipe away mold, lint, and residue with a cloth and a solution of bleach and water. Rinse thoroughly.
  • 3. Clean the dispenser drawer and housing: Remove the drawer, soak in hot soapy water, and scrub away buildup. Clean inside the housing with a brush.
  • 4. Improve ventilation: After each use, leave the door and dispenser drawer slightly open to allow the interior to dry.
  • 5. Check for standing water: Ensure the drain filter and pump are clear so water fully drains after cycles.

When to call a technician: Persistent odors despite thorough cleaning may indicate hidden standing water or drainage issues that need professional attention.

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Repair Difficulty

Very Easy 1/5
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