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Thread: DOS not Dosing

  1. #1
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    DOS not Dosing

    I have a DOS that will not dose at all. I have restarted my apex, and have tried to upgrade the firmware. I have tried to calibrate the dosing rate, but no luck of the DOS spinning. Does anyone have any suggestions?

  2. #2
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    Did you plug in the power supply?


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  3. #3
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    ... really?

  4. #4
    Frequent Contributor zombie's Avatar
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    Quote Originally Posted by jplreefer View Post
    ... really?
    It's a reasonable question to ask. Did you check that? It could have came unplugged or the power supply could have failed. Is it plugged in with the light on the brick?

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  5. #5
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    That was one of the first things I checked. I unplugged it and plugged it back in. To ensure that it had power. I also hoped that it would reset it by doing a power cycle.

  6. #6
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    You would be surprised how many people assume the aquabus cable supplies power to the DOS and do not plug the power supply in.

    I would start a support ticket.

  7. #7
    Frequent Contributor SuncrestReef's Avatar
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    Do the pump heads turn when you manually press the priming buttons?

  8. #8
    Frequent Contributor zombie's Avatar
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    Check the power supply with a multimeter and see if it's actually outputting 24V

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