Question about Xantrex Technology Heart Freedom 20 12 Inverter

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On my Lakeview 14'x58' houseboat, I have a 12V 130 Amp Freedom Marine 25 (1999) providing charging/inverting to a bank of eight 12V deep cycle marine batteries with a total combined AH of ~ 1200, which provides ~ 10 hours of power for the refrigerator and other AC convenience loads. Everything was working fine until this weekend, but now the system will not charge the batteries from either the generator or shore power. The "<10" DC amp indication is lighted on the Heart Interface panel, but will not go higher. I have checked the inline fuse to the battery bank and it reads 2 ohms, so it is not blown. Any ideas or suggestions?

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  • Anonymous Sep 27, 2010

    It is likely a blown fuse inside the unit, but some other component may have failed first. Check the transformer on the AC sensing circuit card for evidence of arcing or charring. It should read ~ 130 ohms across its coil. If not, that is likely your problem.

  • jm37212 Oct 12, 2010

    The problem was a blown relay on the AC sensing card. The card was ~ $300 at a Xantrex authorized service center plus ~ $100 labor and tax. The unit was a bear to uninstall and lug in for service, but if you have reasonable wiring skills, ultimately cheaper than a "house call".



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SOURCE: Heart Freedom invertor 25/12 - cannot get invertor to function

Batteries could be too low, or unit could think batteries are too low because it is not set up for your battery configuration. (voltage, amperage, deep cycle, wet, gel, agm etc.)

I am not sure how you set up that model but the manual should explain it. If you don't have one you can get it online from xantrex.

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the charge fuse may have broken or the charger is bad

Posted on Feb 26, 2010

SOURCE: heart freedom 20. As soon as shore power is

STOP!!! Immediately have the shore power breakers checked by assuring both output legs have EQUAL output. If not they can either burn out the inverter solid states components or the main coach A/C, Generator transfer switch. You can usually check this with a multimeter but the shore power park managers usually have maintenance personnel to check and replace bad pedestal breakers. Does this help?

Posted on May 21, 2010

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