Reversed AC polarity, AC connector inserted incorrectly

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The AC power cable has been connected with reversed polarity, or the AC connector is inserted incorrectly. This is a wiring error that can prevent the inverter from operating safely and correctly.

• Incorrect wiring of live and neutral or phase conductors at the AC connection point
• Improper insertion of the AC connector

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   If this status code is displayed all the time, notify a Fronius-trained service engineer to inspect AC wiring.