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    Troubleshoot B426: heartbeat LED is off

    Causes:

     

    The heartbeat LED on the B426 is off.

    No communication failure, trouble or communication module missing error messages at the keypad.

     

    Solution

     

    Check the TMPR pins next to the Ethernet port on the B426.

    Troubleshoot B426  heartbeat LED is off.png

    Remove the jumper from the pins; the B426s heartbeat LED will start flashing to show the firmware version on the board and then it will resume normal or trouble operation depending on the condition on the B426.

    When the Tamper jumper is covering both pins the heartbeat LED is turned off to save power.

    Version history
    Revision #:
    2 of 2
    Last update:
    a week ago
    Updated by:
     
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