What causes an input phase loss PHF fault on the ATV12?

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Issue:
Getting a input phase loss PHF fault on ATV12

Product Line:
Altivar Machine, ATV12

Environment:
All serial numbers

Cause:
• Drive incorrectly supplied or a fuse blown
• Failure of one phase
• 3-phase ATV12 used on a 1-phase line supply
• Unbalanced load
• This protection only operates with the drive on load

Resolution:
• Check the power connection and the fuses.
• Use a 3-phase line supply.
• Disable the fault by setting Input Phase loss detection IPL page 94 = nO.
• Check the motor connection and any isolating devices located between the drive and the motor (contactors, circuit breakers, etc.).

ATV12 user manual:
https://www.se.com/ww/en/download/document/BBV28581/