ALM-5866 Rack Low Humidity Alarm

Description

This alarm is reported when the cabinet humidity is below the lower limit (fault :10%RH, RH is the relative humidity).

Attribute

Alarm ID Alarm Severity Alarm Type
5866 Major Fault

Parameters

ID Name Meaning
1 Site No.

Number of the site where the faulty board or module is located

Value range: 0-2047
2 Board Type

Number of the type which the faulty board belongs to.

72:DPMU
3 Board No.

Number of the fault board

Value range:0-8:DPMU
4 PassNo

Number of the passage where the faulty board is located.
5 SubLink No.

Alarm sub-category number

255: None
6 Cell Index

Index of the cell where the board or module is located

0-2047: Cell index of the faulty cell in the data configuration

65535: None
7 Site Type

Type of the site where the faulty board is located.

3:BTS30;

5:BTS312;

10:BTS3012A;

11:BTS3006A;

12:BTS3012;

13:BTS3006C;

14:BTS3002E;

15:BTS3012AE;

16:BTS3012 II;

17:DBS3900 GSM;

18:BTS3900 GSM;

19:BTS3900A GSM;
8 RackNo

Number of the rack where the faulty board is located.
9 BoxNo

Number of the subrack where the faulty board is located.
10 SlotNo

Number of the slot where the faulty board is located.
11 Site Name

Site Name
12 Alarm Attribute

Alarm Character

0:Normal

1:Transient Count

Impact on the System

The services may be affected by over-low humidity.

System Actions

None.

Possible Causes

  • The cabinet humidity is below 10%RH (RH is the relative humidity).
  • The humidity sensor is damaged.

Procedure

  1. Measure the cabinet humidity.
    1. Check the setting of the lower humidity threshold of the cabinet

      The operation procedure is as follows:

      Run the LST BTSEXD command on the MML client .

      The Lower Humidity Threshold can be viewed.

    2. Measure the humidity inside the cabinet and check whether the humidity is below the lower humidity threshold.

      Y=>Go to Step 2.

      N=>The humidity is normal. Go to step 4.

  2. Increase the humidity.

    See if the alarm is cleared.

    Y=>The alarm is cleared. Alarm handling is completed.

    N=>The alarm is not cleared. Go to step 4.

  3. Check whether the lower humidity threshold is set higher than normal.

    Check whether the lower humidity threshold is set higher than normal. Note that the normal humidity for the BTS is from15%RH to 85%RH.

    Y=>Modify the lower humidity threshold and check if the alarm is cleared.

    N=>Go to step 4.

  4. Replace the humidity sensor.

    See if the alarm is cleared.

    Y=>The alarm is cleared. Alarm handling is completed.

    N=>The alarm is not cleared. Please contact Huawei Customer Service Center.

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