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    How to troubleshoot D636A Device Comm Error D6112

    Overview

    Device Comm Error displays on the keypad.  Reports trouble zone 2.

    Wiring issue with the devices.

    Issue

    Device Comm Error displays on the D636 keypad. CS is receiving a Trouble zone 2 signal.
     
    Solution
     

    The devices (D636, D620, D640) have a wiring issue.

    All device data wiring should be connected in series.

    Example:  Data wire out from panel terminal 11 to the first device

    Version history
    Last update:
    ‎06-20-2018 07:42 PM
    Updated by:
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