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What causes the ATS48 to display CFF fault?

Issue:
The ATS48 displays a CFF fault at power up?

Product Line: 
ATS48

Environment:
All models , All series

Cause:
After replacing the control board, the initial power up does not read the configuration.

Resolution:
Cycle control power.  If it again faults CFF, revert to the factory settings in menu drC and reconfigure the starter.
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