De Dietrich Contamination or Biofilm in Ice Maker Water Path

Ice has a bad taste or odor, even though water supply tastes fine

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Possible Causes

Dirty water reservoir, Old or saturated water filter, Mold or algae in bin, Residual cleaning chemicals not rinsed

How to Fix / Troubleshooting

Safety first: Unplug the unit and turn off water before cleaning. Use only food-safe cleaners recommended by De Dietrich.

Deep cleaning:

  • Empty bin and reservoir: Discard all ice and drain the water reservoir.
  • Clean interior surfaces: Wash the bin, reservoir, and accessible water paths with warm water and mild detergent, then rinse thoroughly.
  • Descale system: Run a cleaning cycle with a food-safe ice maker descaler following the De Dietrich instructions. Rinse by running several cycles and discarding the ice.
  • Replace water filter: Install a new filter cartridge if present.

Tip: Regular cleaning (every 3–6 months) prevents odors from returning.

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Repair Difficulty

Very Easy 1/5

Required Part

Water Filter Cartridge
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