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    Device Two Wire No Response

    Messages & Alerts

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    Info, impact, causes, and troubleshooting a "Device Two Wire No Response" message.

    Common Causes 

    • Damaged or corroded wire splices.
    • Incorrect wire splices.
    • Poor splices exposed to water in valve box. 
    • Damaged two-wire path.

    What Happens Now? 

    • The biCoder was originally assigned to the controller but is no longer able to communicate with the device. 
      • This is because the controller can’t run or test the zone. 
    • Alert: Zone 13 is having an issue occur, which the zone is linked with the Serial number, E188171 which is where troubleshooting should begin.

    Troubleshooting 

    • Replacing the incorrect splices with DBR/Y-6 splices according to the specification. 
    • If there is any damage to the two-wire path, isolate and repair that section of wire. 
    • Remove the biCoder and bring it back to the controller to test it directly, without the two-wire path connected. This helps rule out the biCoder as the issue and confirm whether the problem lies in the wiring and splices.