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648PRO Sabbath Mode


  • What features are inactive during Sabbath mode?
  • How is Sabbath mode set in a 648PRO product?
  • 648PRO Sabbath mode


To enter Sabbath mode on a 648PRO Series product:

  1. While power is on, touch the Power button on control panel.
  2. "OFF" appears in the display.
  3. Touch and hold Power for 10 seconds.
  4. Four audible chimes indicate Sabbath mode is on.
  5. To return to normal operating conditions, touch Power twice.


While in Sabbath mode, the 648PRO Series Sub-Zero disables the external displays, lights, ice maker, and door alarm.

  • There is no harm in leaving the unit in Sabbath mode.
  • In the event of a power failure, when power returns, the unit will return to this mode.
  • See the Use and Care Guide for more information.
  • For additional appliance Sabbath information, see the Star-K Website.
  • Sabbath mode cannot be initiated if a unit is in Showroom mode. See also, 648PRO Showroom Mode Information.

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


Need further assistance? Contact Customer Care at 800.222.7820 or provide your information below and request a Customer Care representative contact you.

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