Parameters
| ID | Name | Meaning |
|---|---|---|
| 1 | Subrack No. | The number of the subrack |
| 2 | Logical Slot No. | 1=1(Default Fan Box Monitor),4=4(Independent Fan Box Monitor) |
| 3 | Sensor No. | The number of the sensor that resides in the board |
| 4 | Fan Rate Status | 0=Normal,1=Block |
| 5 | Alarm Attribute | 0=Normal, Alarms period are longer than the Transient Threshold. 1=Transient Count, The times and the period of the alarms whose periods are shorter than the Transient Threshold are summed up. If the sum result is longer than the Alarm Occurrence Period Threshold or Alarm Occurrence Times Threshold, an alarm so called Transient Count Alarm is triggered. Because Transient Count Alarm is based on accumulative result, the recovery of the alarm may occur at least one Summing Cycle later. The Summing Cycle can be query by MML "LST STATSLDWIN". |
Impact on the System
Fan block affects system running environment, such as temperature and humidity.
System Actions
Due to mechanical invalidation, such as fan axes fault, the fan block cannot be rectified.
Possible Causes
A fault occurs on the fan or fan control unit, and thus reduces the fan speed (lower than 1000 RPM).
Procedure
-
Check whether the air filter is functional.
Y => Go to 3.
N => Clean the air filter and then install it. For the method of installing the air filter, refer to the BSC6000 Parts Replacement Guide. Go to 2.
-
Check whether the fan rev is nomal. The full rev is 4000 RPM.
Y => The alarm handling is complete.
N => The alarm persists. Go to 3.
-
Replace the fan subrack and check whether the alarm is cleared.
Y => The alarm handling is complete.
N => Please contact Huawei Customer Service Center.
NOTE: Remove the faulty fan subrack and insert a new fan subrack soon. The interval should be less than five minutes.