Whirlpool Biofilm / Mold and Bacteria Growth

Whirlpool undercounter ice maker interior surfaces and bin show pink or slimy residue

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Possible Causes

Infrequent cleaning, warm ambient conditions, poor drainage, contaminated water supply

How to Fix / Troubleshooting

Safety: Disconnect power and water. Wear gloves and eye protection when using cleaners.

  • Remove ice and parts: Empty the bin and remove any removable parts such as the bin, reservoir cover, and spray bar.
  • Deep clean: Scrub all affected surfaces with warm soapy water, then apply a Whirlpool-approved ice machine cleaner and sanitizer. Follow contact times on the product label.
  • Clean drain system: Flush the drain line with hot water and a mild disinfectant to remove slime.
  • Reassemble and sanitize cycle: Reassemble, restore water and power, and run a cleaning/sanitizing cycle if your model supports it. Discard the first batches of ice.
  • Establish routine: Clean and sanitize at least every 6 months, or more often in warm or humid environments.
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Repair Difficulty

Very Easy 1/5

Required Part

Ice Maker Cleaner (consumable)
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