InstFltGri

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Hi,
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.

-kriwi-

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