Grid relay sticking

¿Qué significa 457 ?

The internal grid connection relay is physically stuck or failing to operate correctly, preventing the inverter from safely connecting or disconnecting from the grid. Consequently, the inverter is not feeding any energy.

• Mechanical failure of the grid relay contacts
• Control circuit malfunction preventing proper relay switching

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1. 1

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