High internal DC bus voltage

This signature appears when the inverter detects excessive DC voltage on its internal bus and raises an OV-BUS alarm. To check it, measure the DC and AC voltages at the inverter and compare them with the values shown on the LCD. The manuals list internal damage and a wire that came loose during shipping as possible causes. If the fault is confirmed, the recommended action is to replace the inverter.

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• sentence 2: support check: partial - Passages say measure DC and AC voltages and compare with LCD, but not explicitly 'at the inverter' or that it is a check procedure for the alarm per se.
• sentence 3: support check: partial - Internal damage and wire loose during shipping are listed, though layout is ambiguous as causes versus solutions, and 'manuals' plural isn't explicit.
• sentence 4: support check: partial - Replace Inverter is listed in the solution, but the passages do not explicitly condition it on a confirmed fault after testing.
• sentence 4: review: partial - Replace Inverter is listed after the Test steps, but the rows never explicitly make replacement conditional on the fault being confirmed. -->