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How to clear an AC voltage low (0012 or 0092)?

Issue:
Inverter faulted on 0012 or 0092

Product Line:
GT Series

Environment:

Cause:
Grid issue or sense transformer issue

Resolution:
Note: The work instruction provided is meant for those who are qualified to work on the inverter. This means that they should know how to properly Lock out and Tag Out (LOTO) the inverter..., etc.

Faults 0012 and 0092 are grid related faults and will auto clear once the grid is fixed. However, if it is not auto-clearing, check the sense transformer and their fuses. The sense transformer is what the inverter uses to detect the line voltages on all three phases of the grid.  If anyone of the sense transformers is defective, it will blow its' fuse and that phase will be open. The system will think that one phase is lost and fault with 0012 or 0092.

Solution: replace the sense transformers and their fuses
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