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How do you fix an AC\DC fan rotation (4006) error?

Issue:
Got the error 4006 AC\DC fan rotation.

Product Line:
XCNA, XC

Environment:

Cause:
Fan is not running and it is causing the inverter to derate

Resolution:
Check the resistor in the DC cabinet. It is located at the terminal block XT13 (Upper top center of the DC cabinet). If the resistor is loose, the error 4006 will occur. Check for a loose connection at the control block as well.
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