Hollow cubes form when the outer shell freezes but there is not enough water—or enough freezing time—to create a solid cube.

What may be involved

  • Low or restricted water fill
  • Clogged filter or supply restriction
  • Water inlet valve problem
  • Freezer temperature too warm
  • Airflow directed incorrectly around the ice maker
  • Ice maker thermostat or control issue

Confirm the freezer is maintaining its recommended temperature and that the filter is installed correctly. Model-specific fill testing can identify whether the issue is water supply or the ice maker itself.