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Hollow or Small Ice Cubes

Cause:

  • Warm freezer temperatures
  • Ice maker issue

Topics:

  • What can be done to fix hollow ice cubes?
  • Icemaker produces small ice cubes
  • Small or hollow ice

Steps to Verify Issue:

  1. Verify no service messages, icons, or error codes appear.
  2. Verify the freezer temperature is below 5°F.
    • Temperatures above 5°F can affect ice maker performance.
    • Sub-Zero recommends 0°F freezer temperature.
    • Refer to the product use and care guide for further information.
  3. Verify unit's condenser has been cleaned within the last 3-6 months. Refer to the product use and care guide for further information.
  4. Ensure there are no recent plumbing or water pressure issues in the home.
    • If water pressure in the home is fine, sediment in the house supply line can decrease pressure to the unit.
  5. If installed, ensure the in-line water filter is not expired.
    • Some models have water filters built in, and some may have external water filters connected to them.
  6. For undercounter ice maker UC-15I, refer to UC-15I Ice Maker Cube Size.

See also, Ice Maker Does Not Make Ice

Answer:

If these steps do not resolve the issue, no further troubleshooting advice is available. Contact Factory Certified Service to schedule an appointment for repair.

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