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  1. #1
    Join Date
    Dec 2006
    Location
    Tigard, Oregon
    Posts
    3,017

    Default Problem with ACR

    I'm having a problem with my Blue Sea ACR not combining. I have two stereo batteries that are wired together in parallel (as one bank) plus a starter battery. I added a digital voltmeter at the helm that is connected to the stereo bank. I have the stock voltmeter connected to the starting battery. I have a remote led at the helm connected to the ACR. I have the ProMariner ProSport 20 and plug it in after each use.

    SO here's the problem. The ACR will not combine as indicated by the blinking led. Engine is running, stereo bank voltmeter reads 12.7 and starting battery voltmeter reads around 14v indicating that it is receiving charging current. So why won't the ACR combine?
    Al

    2006 Mobius LSV

  2. #2
    Join Date
    Sep 2010
    Location
    Lake wallenpaupack PA
    Posts
    872

    Default

    did you try running thru these questions:



    here is the link http://bluesea.com/files/resources/t...FAQ_Matrix.pdf

  3. #3
    Join Date
    Dec 2006
    Location
    Tigard, Oregon
    Posts
    3,017

    Default

    Thanks, I had not seen that. Looks like I have a faulty ACR. I'll give blue sea a call.
    Al

    2006 Mobius LSV

  4. #4
    Join Date
    May 2009
    Location
    Dallas, TX
    Posts
    887

    Default

    Regardless of whether you have a bad ACR or not, as your audio system current draw and your depleted batteries current draw and your boat operations current draw collectively exceed your alternator output, you have also excceded the functional limitations of your ACR. Its an issue I have been observing and speaking to for years now. Its not unusual. Remember that your alternator output is generally rated at a high rpm and for intermittent use rather than continuous duty. Amplifiers with higher current draw compound the issue and an ACR by nature increases your dependency on shore AC charging. As your ACR doesn't combine when expected this will in turn dominoe into deeper battery cycles, less battery lifespan, decidedly less audio output and can contribute to thermal problems in the peak heat of summer.
    Also, consider that an ACR is NEVER used on a fishing/bass boat to combine the alternator or stator with the depleted trolling motor bank. They know that a current draw this large and battery bank this large will exceed the limitations of both the alternator and ACR as designed.
    There are designs that circumvent theses problematic issues but they must be done in the context of a total audio system and total charging system instead of a collection of random parts. As you increase one part of the equation it will trickle down into the other components.

    David
    Earmark Marine

  5. #5
    Join Date
    Dec 2006
    Location
    Tigard, Oregon
    Posts
    3,017

    Default

    Quote Originally Posted by EarmarkMarine View Post
    Regardless of whether you have a bad ACR or not, as your audio system current draw and your depleted batteries current draw and your boat operations current draw collectively exceed your alternator output, you have also excceded the functional limitations of your ACR. Its an issue I have been observing and speaking to for years now. Its not unusual. Remember that your alternator output is generally rated at a high rpm and for intermittent use rather than continuous duty. Amplifiers with higher current draw compound the issue and an ACR by nature increases your dependency on shore AC charging. As your ACR doesn't combine when expected this will in turn dominoe into deeper battery cycles, less battery lifespan, decidedly less audio output and can contribute to thermal problems in the peak heat of summer.
    Also, consider that an ACR is NEVER used on a fishing/bass boat to combine the alternator or stator with the depleted trolling motor bank. They know that a current draw this large and battery bank this large will exceed the limitations of both the alternator and ACR as designed.
    There are designs that circumvent theses problematic issues but they must be done in the context of a total audio system and total charging system instead of a collection of random parts. As you increase one part of the equation it will trickle down into the other components.

    David
    Earmark Marine
    David,

    Not sure I totally understand what you are saying but I think my problem is pretty basic. My dual battery bank is fully charged (12.7V) and the ACR does not combine (yes, I have waited out the two minute delay) when I can see that the starting battery is getting charging current from the alternator as it is showing nearly 14V. A working and properly wired ACR should combine under these conditions.

    I called Blue Sea today and they told me to make sure the SI wire is connected to the correct terminal on the ignition switch (i.e., zero volts in the on position). Or better yet, disconnect the SI wire at the ACR and see if it still does not combile. If it doesn't, they said to send it in and they will send out a new one.

    Al
    Al

    2006 Mobius LSV

  6. #6
    Join Date
    Apr 2008
    Location
    California
    Posts
    2,840

    Default

    Quote Originally Posted by cab13367 View Post
    David,

    Not sure I totally understand what you are saying but I think my problem is pretty basic. My dual battery bank is fully charged (12.7V) and the ACR does not combine (yes, I have waited out the two minute delay) when I can see that the starting battery is getting charging current from the alternator as it is showing nearly 14V. A working and properly wired ACR should combine under these conditions.

    I called Blue Sea today and they told me to make sure the SI wire is connected to the correct terminal on the ignition switch (i.e., zero volts in the on position). Or better yet, disconnect the SI wire at the ACR and see if it still does not combile. If it doesn't, they said to send it in and they will send out a new one.

    Al
    Al keep me posted as to the outcome of the SI wire on your install if you would.
    2007 Mobius LSV

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