ALM-5748 Battery Cabinet Heater Fault Alarm

Description

This alarm is reported when the battery cabinet heater is abnormal.

Alarm ID	Alarm Severity	Alarm Type
5748	Major	Fault

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. 133:APM/APMU
3	Board No.	Number of the fault board Value range:0-8:APMU
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. 13:BTS3006C; 14:BTS3002E; 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

The BTS mains supply may be abnormal, which causes the interruption of services.

None.

This alarm is reported when the battery cabinet heater is abnormal.

Check whether the switch of the AC heater is turned on.
1. Check on site whether the switch of the AC heater is turned on:
  Y => Go to procedure 2.
  
  N =>Turn on the switch of the AC heater. Go to procedure 2.
Check the heating board and the relay.
1. Turn off the switch of the AC heater, MCB of the battery loop, and MCB of the system.
2. When the ambient temperature is below 5℃ and the pins on the relay are interconnected, measure the voltage of two pins of each relay in serial connection on the heating board with a multimeter to see whether they are short-circuited.
  Y => Replace the heating board in the battery cabins.
  
  N => Replace the relay on the heating board in the battery cabin.
3. After ensuring that the replaced cables of the heating board and the relay are correctly connected, turn on the general switch of the system, switch of the AC heater, and MCB of the battery loop in the AC power-on sequence. Use a calibrated outdoor thermometer to check whether the temperature of the battery cabin arises:
  Y => The alarm is cleared. The alarm handling ends.
  
  N => The alarm is not cleared. Contact Huawei Customer Service Center.