TP48200A-D14A1 Telecom Power
User Manual
5 System Maintenance
Issue 04 (2019-12-20)
Copyright © Huawei Technologies Co., Ltd.
30
Fault Type
Fault Analysis
Handling Method
parameters
Battery charging
overcurrent
Temperature sensor
fault
is lowered.
3.
Check the charging current. If the current is
excessively strong, switch equalized charging to float
charging and check whether the charging current is
weakened. If the charging current is still excessively
strong, adjust the current suppression to reduce the
charging current. If the preceding steps do not work,
replace the faulty battery.
Door alarm
(The alarm is generated
only when the door
status sensor is
installed.)
Opened cabinet door
Door status sensor
fault
1.
The alarm is cleared after the cabinet door is closed.
2.
If the alarm persists after the cabinet door is closed,
check whether the door status sensor is faulty.
Water immersion alarm
(The alarm is generated
only when the water
sensor is installed.)
Shelter water
accumulation
Water sensor fault
1.
Check whether the floor of the shelter is wet. If the
floor is wet, use a cotton cloth to wipe the floor and
ensure it is dry or use other dehumidifiers.
2.
If the alarm persists after the water is drained, check
whether the water sensor is faulty.
Smoke alarm
(The alarm is generated
only when the smoke
sensor is installed.)
Smoke in the shelter
Smoke sensor fault
1.
Check whether the smoke caused by fire pervades in
the shelter. If there is fire, extinguish the fire and
ventilate the shelter.
2.
If the alarm persists when there is no smoke, check
whether the smoke sensor is faulty.
Rectifier fault
Poor contact of the
rectifier module
Rectifier module fault
1.
Check whether the ALM indicator on the panel of the
rectifier module steady on. If the ALM indicator
steady on, it indicates that the rectifier module is
faulty. Replace the rectifier module.
2.
Disconnect AC input to the rectifier module and
restart the rectifier module later on. If the alarm
persists, replace the rectifier module.
Module shutdown
Module protection
Input overvoltage or
undervoltage of the
rectifier module
Rectifier module fault
1.
Check whether the mains voltage is over the AC
overvoltage alarm threshold (300 V) of the rectifier
module or below the AC undervoltage alarm
threshold (85 V). For the power supply network with
long-time overvoltage or undervoltage, negotiate
with the maintenance personnel of the electricity
department to improve the power supply network.
2.
If the alarm persists when the input voltage of the
rectifier module is proper, check whether the rectifier
module is proper. If the rectifier module is faulty,
replace it.
Communication failure
of rectifiers
Signal cable
connection fault of
the rectifier module
Rectifier module out
of position
Poor contact of the
rectifier module
1.
Check whether the rectifier module is in position or
whether contact is proper. If the PMU is inserted in
an incorrect position, insert it correctly. If the contact
is not proper, remove and then insert it.
2.
If the alarm persists, replace the rectifier module.
