Tabuchi Electric EHW-S55P3B-PNUS Manuel De L'utilisateur page 21

■Restoration of Grid-tied Operation
If power is restored on the commercial power grid during stand-alone operation,
the inverter automatically reengages grid-tied operation.
1
Once input from the commercial power
grid is detected, "GRID CONNECT→"
appears on the Remote Controller for a few
minutes.
2
Grid-tied operation resumes a few minutes
afterwards.
The status lamp lights up green.
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