Fan Box Failure

Fan Box Failure

This alarm is generated when the fan monitoring board detects that the hardware of the fan box is faulty.

The fans in the faulty fan box automatically run at the full speed. In this case, the noise increases obviously, and the auto speed regulation function is unavailable.

The current subrack temperature cannot be obtained.

MAin reasons of this fault are:

The speed regulation module in the fan box is faulty.

The temperature sensor in the fan box is faulty.

Then Fan Box Need to Change.