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Thread: MH on/off by temp

  1. #1
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    MH on/off by temp

    I have 3 MH on my tank and use an Apec Cntl for the 3 lights. Here is my current program:
    Fallback OFF
    Set OFF
    If Time 11:00 to 19:00 Then ON
    If Tmp > 83.5 Then OFFI would like to figure out is I can program for the lights to come back on if lower than 82.0 but only during the time period in the Time statement.

    TYIA

  2. #2
    Frequent Contributor zombie's Avatar
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    Fallback OFF
    If Temp < 82.0 Then ON
    If Temp > 83.5 Then OFF
    If Time 19:00 to 10:59 Then OFF

    Sent from my SM-G965U using Tapatalk

  3. #3
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    I figured that it had to be an order thing... put the time code last and it will rank that one as the most important.

  4. #4
    Frequent Contributor zombie's Avatar
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    Quote Originally Posted by sisterlimonpot View Post
    I figured that it had to be an order thing... put the time code last and it will rank that one as the most important.
    It's just the backackwards way to do AND logic in the apex. Since he wants hysteresis temp control AND turn on during a specific time, you have to do that by turning ON for one condition and then turning OFF for the opposite of the other condition.

    Sent from my SM-G965U using Tapatalk

  5. #5
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    Quote Originally Posted by zombie View Post
    Fallback OFF
    If Temp < 82.0 Then ON
    If Temp > 83.5 Then OFF
    If Time 19:00 to 10:59 Then OFF

    Sent from my SM-G965U using Tapatalk
    Works perfect. Thanks!

  6. #6
    Frequent Visitor Todd's Avatar
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    Might want to add

    Min Time 030:00 Then OFF

    at the end. This will keep the lights OFF for at least 30 minutes when shut down and prevents them from short cycling.

  7. #7
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    Quote Originally Posted by Todd View Post
    Might want to add

    Min Time 030:00 Then OFF

    at the end. This will keep the lights OFF for at least 30 minutes when shut down and prevents them from short cycling.
    I have a "Defer" statement in the program for each light's outlet. This allows me to turn one off/on independently of the others.. Only set for 15 minutes delay but has not been a problem.

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