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FanSpeedLowTh

 

Table 1: Alarm Details

Parameter

Description

Code

fanSpeedLowTh

Description

Fan Speed Below Threshold: The fan speed of the cooling module is below the low threshold. For information, see Fan-speed thresholds.

Entities Affected

Equipment (see respective table below).

Possible Cause

  • The cooling module is faulty.

  • The power entry module is faulty.

Default Severity

Major

Service Affecting

Yes (true).

Alarm Clearing

See Clearing a FanSpeedLowTh alarm.

Related Fault Hierarchy

Table 2: Equipment

Entity Name

 

Fault Indicator

Equipment

Indicator

Status

fan:<chassis>/<slot>

Cooling module

See cooling module specifications in the BTI7800 Series Hardware Overview and Installation Guide.

Clearing a FanSpeedLowTh Alarm

Note

Follow all applicable safety requirements as described in the BTI7800 Series Hardware Overview and Installation Guide.

Note

Refer to the BTI7800 Series Hardware Overview and Installation Guide before reseating (removing and reinstalling) or replacing equipment.

  1. Retrieve fan-speed information for the cooling modules installed in the chassis:
    show environment fanspeed
  2. Ensure that the ambient temperature is within the specified range for chassis operation.Note

    See the BTI7800 Series Hardware Overview and Installation Guide for information about environmental site requirements.

  3. Check for and clear alarms raised against each PEM, and then check for alarms on the cooling module.
    • If the alarm has cleared, you have completed this procedure.

    • If the alarm does not clear, go to the next step.

  4. Reseat the cooling module, and then check for alarms.
    • If the alarm has cleared, you have completed this procedure.

    • If the alarm does not clear, go to the next step.

  5. Replace the cooling module, and then check for alarms.
    • If the alarm has cleared, you have completed this procedure.

    • If the alarm does not clear, contact your next level of support.