Hoshizaki Reduced Ice Capacity

Ice production is very low compared to rating

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Possible Causes

Dirty condenser coil, Scale buildup on evaporator and water distribution tubes, High ambient or water temperature, Partially restricted water filter or inlet valve

How to Fix / Troubleshooting

Safety First: Disconnect power and water before cleaning.

  • Clean condenser: Remove dust and grease from the condenser fins to restore heat rejection.
  • Descale water system: Run a full cleaning cycle with nickel-safe cleaner. Remove and clean spray tubes or distribution troughs to ensure even water flow.
  • Check ambient and water temps: Measure room and incoming water temperature. High temperatures reduce capacity; improve ventilation or cooling if needed.
  • Replace water filter: If the filter is older than recommended, replace it to restore full flow.

When to call a technician: If capacity remains low after cleaning and environmental corrections, a refrigeration performance issue may be present.

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Repair Difficulty

Easy 2/5

Required Part

Water Filter Cartridge
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