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Assigned new DO Isolated VAC & when testing on false in logic at charm still reading present VAC?

I assigned new SD alarm for a PI and when testing the DO in the logic, everything works as it should. When checking voltage with output is false I still have 120VAC.  

gbilly
  • Andre Dicaire
    You should expect to see 120 VAC across the DO contacts when it is open (Not conducting) as this is the highest impedance in the circuit.

    You see no voltage across the load in this condition. WIth DO energized, the voltage drop should move to the load.

    Andre Dicaire

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