Objects that Block the Fan Cause the Device to Report the FAN_FAIL Alarm

The device reports the FAN_FAIL alarm. After the fan is checked, it is found that some objects block the fan board. After the objects are removed, the fan works in the normal state.

Product

OptiX OSN 1500

OSN 2500

OSN 3500

Fault Type

Others

Symptom

When the OptiX OSN 1500 is being commissioned, it is found that the fan cannot work in the normal state. The device reports the FAN_FAIL alarm.

Cause Analysis

Fan Failure

Procedure

1. Remove the fan from the subrack. It is found that some objects block the fan.
2. Remove the objects and install the fan. The fan can work in the normal state.
3. Query the NE alarms on the NMS. It is confirmed that no alarm is generated, and the FAN_FAIL alarm is cleared.

Reference Information

When the fan is faulty, check whether some objects block the fan.

If no object blocks the fan, replace the fan board.

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