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Old 11-21-2011, 07:18 AM   #15
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That sounds reasonable and after looking at my owner's manual more deeply I found where to adjust the idle sensitivity. It looks like the Heart Interface inverter manual is still online on the "discontinued" page of Xantrex's site.

I'll start with disabling the idle function and go from there fine tuning it.


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Old 11-21-2011, 10:44 AM   #16
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The load sensing was set at the factory default of 4watts, I set dip switches 5&6 to on, disabling the idle sensing circuit and I now have full power to the outlets/lights/microwave with no fluctuations. It looks like the current sensing circuitry may be failing or has failed.

This is obviously a band-aid but it works for now. I'll just leave the inverter off when boondocking and energize it as needed. It charges the batteries just fine and all 120v works fine when on shore power so a new inverter is something for future worry.

Just bought this thing with perfect interior/exterior, full maintenance records/service history, put new tires on it for the drive home, got it home and had to replace a lift pump, it's currently in for new front calipers/rotors and I really don't want to drop more into it just now.

Thanks for the tip that lead to a "fix".

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