TCL Biological Growth in Drain Pan or Coils

Dehumidifier emits a musty or moldy odor during operation.

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Possible Causes

Dirty evaporator coil, Standing water in drain pan, Dirty bucket, Poor air filtration

How to Fix / Troubleshooting

Safety: Unplug the unit. Wear gloves and a mask if you are sensitive to mold.

  • Clean bucket: Wash the water bucket with warm water and mild detergent. Rinse and dry thoroughly.
  • Clean filter: Wash or replace the air filter to improve air quality.
  • Access coils and pan: Remove the front cover to expose the evaporator coil and drain pan. Use a coil-safe cleaner or a mild detergent solution to clean surfaces. Do not soak electrical components.
  • Dry thoroughly: Allow the unit to dry completely before reassembly. Run the fan-only mode (if available) for 30 minutes to help dry internal parts.
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Repair Difficulty

Easy 2/5
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