Skip to main content

Classic (Formerly Built-In) Series Does Not Make Ice


  • Possible jammed ice cube
  • Low water pressure
  • Frozen ice maker fill tube
  • Warm freezer temperature
  • Water valve energized longer than fifteen seconds


  • No ice production in Classic (Formerly Built-In) Series (BI) model
  • Ice maker will not cycle on BI product
  • Icemaker does not work and no fault codes

Steps to Verify Issue:

  1. After the unit is turned on, wait 24 hours for ice production. It may take this long to see ice cubes in the ice bin.
  2. Verify the ice maker is turned on:
    • Press the Ice Maker key.

    • A single ice cube shows when the ice maker is on.

    • Note: When the ice maker is turned on, water may not flow into it immediately.

  3. Make sure the water supply to the unit is turned on. Refer to Water Line Shut-Off Valve Location for details.
  4. If "Service Ice" is flashing, the water valve energized longer than fifteen seconds and the ice maker turned off.
  5. Warm temperatures impact ice maker performance. Confirm the freezer temperature is at or below 5°F. Sub-Zero recommends 0°F freezer temperature.
  6. Make sure the condenser is clean. See Clean the Condenser for instructions.
  7. Change water filters as often as recommended, typically every 6-12 months.
  8. If installed, verify the home inline water filter is not expired. See Inline Water Filters. See also, Sub-Zero Does Not Have a Water Filtration System.
  9. Confirm good water pressure to the unit. See How to Confirm Water Pressure.
  10. Make sure the ice bin is properly installed by making sure it is level and seated in place. On some models, the ice bin presses the ice maker switch. This varies from model to model.
  11. Make sure the ice maker shut-off arm is in the down position.
  12. Make sure the ice maker white plastic rudder arm is attached to the shut-off arm and reattach if needed. If broken or cracked, replace the ice maker shut-off arm.
  13. Make sure the ice maker is free of obstructions or jammed ice cubes. Use a hair dryer aimed toward the fill tube and ice mold on low for 5-10 minutes to free stuck ice cubes.
  14. Make sure the ice maker water fill tube is not blocked. See Ice Maker Fill Tube Frozen.
  15. After freeing blockage, turn the unit off, then on again to reset.
  16. If ice production stops often with the use of a reverse osmosis system or well water, a pressure booster or regulator may improve performance. Contact the reverse osmosis provider or speak with a plumber for suggestions.
  17. After performing these steps, wait 24 hours for ice production to resume.
  18. If ice production does not resume after following these troubleshooting steps, service is needed to expertly diagnose and repair the unit. Contact Factory Certified Service to schedule an appointment for repair.

See also:


Refer to Ice Maker Does Not Make Ice for more information and links to other product lines.

Thank you for your request. A Customer Care representative will contact you.

An error occurred. We were unable to submit your request.

Related Questions

We're standing by with answers

Whether you’re shopping for appliances or have questions about those you already own, we’ve got the resources you need. Talk directly to a customer care expert at the Sub-Zero, Wolf, and Cove service center, or connect with an appliance consultant at an official showroom near you. Get quick answers online, or reach a certified service provider or installer. And much more.

Call us at (800) 222-7820

Customer Care and Support