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    How to Troubleshoot Phone Line 1 Fails when the panel is reporting over Line 1

    Issue

    The panel communicates on both lines, but the Primary Fail LED of the D928 will not go out. The cords, the ribbon cable, and the D928 have been replaced, the lines have been switched, and the Primary Fail LED remains ON.

    Solution

    Check the Ground Start - Loop Start Jumper that is located in the lower left corner of the panel. Make sure it is locked under Loop Start.

    Part numbers D7212B, D9112B, D7212B1, D9112B1, D7212, D7412, D9112, D9124, D9412, D7412G, D9124G, D9412G, D7412GV2, D9124GV2, D9412GV2,

    Version history
    Revision #:
    1 of 1
    Last update:
    ‎06-08-2018 09:05 PM
    Updated by:
     
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