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Thread: Heater no staying off

  1. #1
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    Heater no staying off

    Hello guys and girls for some reason my heater is not staying off with the programming i have.

    Fallback OFF
    If Temp < 76.7 Then ON
    If Temp > 78.0 Then OFF


    even though my temp is 77 the heater is on. Its a full apex and the heater is plugged into an EB8.

    thx in advance for any help.

  2. #2
    Fish Whisperer cypherljk's Avatar
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    Once your heater is cut on with this programming it will have to get to OVER 78 before it cuts off. The range you have it set for is from 76.8 <--->78 to be on and it won't cut off until 78.1. If you want it to cut off at 77 then you should change your programming to this:

    Fallback OFF
    If Temp < 76.7 Then ON
    If Temp > 76.9 Then OFF


  3. #3
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    thank u so much

  4. #4
    Master Control Freak RussM's Avatar
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    Dec 2012
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    California - US Pacific
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    What you describe is normal. You have the outlet programmed to operate over a range of temperature.

    The outlet will turn ON as soon as the tempoerature drops below 76.7. It will then stay ON until the temp hits 78.1, and then will turn OFF. It will then stay OFF until the temp goes below 77.1 again, then will turn ON, stay on until the temp once again exceeds 78.0, so on and so forth. This will maintain the tank temperature with the specified range.
    Please do not send me PMs with technical questions or requesting assistance - use the forums for Apex help. PM me ONLY if the matter is of a private or personal nature. Thanks.

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