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What is PIF fault on an ATS48?

Issue:
ATS48 faults with PIF immediately at run command.

Product Line:
Altistart 48, ATS48

Environment:
All models

Cause:
NA

Resolution:
PIF is a phase inversion fault.
At each new run command, the ATS48 checks the line supply phase rotation.  This fault appears if the measured phase rotation on L1-L2-L3 does not match the setting for PHr in the PrO menu.  If the PHr is changed, cycle control power for the new setting to take effect.
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