Ariston Biological Growth in Drain Pan and Coils

Dehumidifier emits a musty or moldy odor from the air outlet

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Possible Causes

Dirty air filter, Mold growth on evaporator coil, Stagnant water in drain pan, Contaminated water bucket

How to Fix / Troubleshooting

Safety: Unplug the unit before cleaning. Wear gloves and, if sensitive, a mask when dealing with mold.

Steps to remove odors:

  • 1. Clean the filter: Wash the air filter with mild detergent and dry completely.
  • 2. Clean the bucket: Wash the water bucket with hot soapy water and a small amount of bleach. Rinse thoroughly.
  • 3. Access coils and drain pan: Remove the front/rear cover to expose the evaporator and drain pan. Spray with a non-rinse coil cleaner or a mild disinfectant safe for aluminum.
  • 4. Clean drain pan: Wipe out slime and debris from the pan. Ensure the drain hole is clear.
  • 5. Dry and reassemble: Allow components to dry before reassembly. Run the unit on fan-only mode for a while to help dry internal surfaces.
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Repair Difficulty

Easy 2/5
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