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Thread: Code to turn on powerhead when DOS is on

  1. #1
    New User
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    Code to turn on powerhead when DOS is on

    Hey all. I have searched and asked around and can't find an answer.

    I just got a second hand DOS and moved the additive lines to the sump. Where I put is does not have great flow so I added a powerhead to churn the water. I cannot figure out the code to turn on an outlet when DOS is running, and off one minute after the DOS is complete.

    Here is what I have:
    Set OFF
    If output alkalinity = on then on
    If output calium = on then on
    If output COR = off then off
    min time 1:00 then off

    And this time I thought I had it! Oh well, What did I mess up.

    Thanks.

  2. #2
    Frequent Visitor Todd's Avatar
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    Jan 2013
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    Huntsville, AL
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    Change the Min Time line to:

    Defer 001:00 Then ON

    It helps to understand the Min Time command if you mentally ignore the THEN. So Min Time ...OFF, would hold the outlet OFF for at least 1 minute before any other command could turn it back ON. The DEFER...ON is slightly different, it delays 1 minute before allowing the outlet to change to ON.

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