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How to troubleshoot the AC Voltage low-2406 fault?

This error event code is triggered when the grid voltage is below the nominal range.
Product Line:
Loose connection, VSE, PVO or APP board.
Perform a complete LOTO on the inverter. Check for loose connection on the VSE board located on the AC door (left most door). It a green board located at the upper right corner of the AC cabinet. Check for loose connection at the third door, where the control block located. The control block is where the APP and PVO reside. Make sure if there are other units on site and see if they all experiences the same issue. Call us back at 866-519-1470 option 3 & 3 if everything checked out fine and the issue remained.
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