Topics:

• Why are ice cubes green?
• Why are ice cubes blue?
• What to do when ice maker makes blue or green ice cubes?
• Why are there white flecks in the ice cubes?
• Why are ice cubes cloudy?

Cause:

• Copper corrosion in the water line supplying the refrigerator causes blue or green ice
• Cloudy ice is the result of mineral deposits in the water that appears as the ice dries out
• Calcium deposits in water cause white flecks in ice cubes, especially as it melts
  • When water freezes and thaws, the minerals in it concentrate and the thaw cycle contributes to this
  • Ice shrinks as it evaporates, leaving this concentrated mineral "residue"

Troubleshooting:

1. Verify no service messages, icons, or error codes are shown.
2. If installed, verify the in-line water filter is not expired. See also:
   • Classic (BI) Water Filter Replacement Indicator On
   • Designer (IT, IC) Water Filter Replacement
   • 648PRO Replace Filter Message
   • How to Replace a Water Filter
   • Frequent Water Filter Replacement for information about filter lifespans.
3. Verify a Sub-Zero water filter is being used. Refer to Non-Sub-Zero Water Filters for further information. 
   • Filters are available for online purchase in the Sub-Zero, Wolf, and Cove Store. 
4. Adding an in-line water filter (available at most home improvement stores) may reduce or eliminate discoloration.
   • Refer to the product Installation Guide for water pressure specifications.
   • Calcium deposits may just be in the water line to the unit. Using the filter in the unit (Classic (BI) and Designer (IT, IC)) or adding a filter to the water line can help reduce calcium deposits.
   • Calcium deposits are not visible in liquid water. To test home water supply, use water from a different tap to make a batch of ice in an ice tray.
5. Discontinue use of ice.
6. Consult with a local plumber.
   • Plumbers may clear water lines and replace corroded plumbing fixtures for blue/green ice.
   • Plumbers may suggest the best kind of filter for white sediment in water.
7. For any other color ice cubes, contact a plumber, as this is a water or water line issue.
8. If these steps do not resolve the issue, no further troubleshooting advice is available. Contact Factory Certified Service to schedule an appointment for repair.