I have problem in installing an off-grid system consist of STP20000TL-30 and SI8.0H, battery and no genset.
I have an error message of "InstFltGri" in the inverter STP20000TL.
The grounding resistance is oke, the voltage difference between Neutral and ground is almost 0V.
Please help, if there are any suggestion.. Thanks in advance.



  • Ethan BrushEthan Brush Solar Expert Posts: 231 ✭✭
    The inverter is not "seeing" an acceptable grid or all three phases.  Perhaps the sunny islands are not configured properly.

    Maybe check out this quick video?

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