What do the LEDs on ACU/SDC mean?

Created by Hugo Fuhlendorff, Modified on Tue, 14 Jun 2022 at 10:00 AM by Hugo Fuhlendorff


  • Core and SDC Status LED

    The STATUS LED on the Access Control Core and Single Door Controller (SDC) indicate the following:

    • Solid White indicates the SDC is provisioned and functioning normally

    • Solid Green indicates the Core is provisioned and functioning normally

    • Blinking Red indicates there is a problem with the Internet connection

    • Solid Cyan appears when the SDC/Core is booting

    • Solid Yellow indicates that the SDC/Core is restoring software; appears when you turn on the SDC/Core for the first time

    • Blinking Yellow indicates that the SDC/Core is updating software; appears when the SDC/Core has been online for less than 24 hours

    • Solid Blue indicates that the SDC/Core has finished booting and is ready for provisioning

    • Solid Purple indicates that the SDC/Core is connected to the Open Admin app

    • Blinking Purple indicates the SDC/Core is ready to connect to the Open Admin app

    • Solid Red indicates the SDC/Core is in an error state–go to the Hardware Dashboard in the Control Center for more information




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