Huawei UPS5000-E-300K-SMT - Page 258

UPS5000-E-(50 kVA-300 kVA)
User Manual (50 kVA Power Modules)
7 Troubleshooting
Issue 02 (2017-02-25)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
249
Case
Symptom
Possible Cause
Measure
module.
The power module is
faulty.
Replace the power
module.
The
inverter
is not
normal.
The buzzer is activated,
the Fault indicator is on,
the inverter is faulty, and
the UPS transfers to
bypass mode.
The UPS is overloaded
or short-circuited.
Reduce load or rectify
short circuits.
Inverter overtemperature
occurs.
Install more air
conditioners or
ventilation devices to
ensure normal
temperatures inside the
equipment room.
The power module is
faulty.
Replace the power
module.
The
charger
generate
s an
alarm.
The buzzer is activated,
the Fault indicator is on,
and the charging
function fails.
The charger fails.
Replace the power
module.
The charger experiences
overcurrent.
Replace the power
module.
The charger experiences
undervoltage.
Check whether the
configured number of
batteries is correct. If the
value is correct but the
alarm persists, replace
the power module.
The
UPS
works
in
bypass
mode
and
does not
transfer
to
inverter
mode.
When the mains is
normal, the UPS works
in bypass mode and does
not transfer to inverter
mode.
Set the UPS working
mode to ECO mode.
Set the working mode
correctly.
The bypass transfer
times reach the upper
threshold.
Clear the bypass transfer
times on the LCD.
The
bypass
is not
normal.
The buzzer is activated,
and the Fault indicator is
on.
The bypass thyristor is
damaged.
Replace the bypass
module.
The bypass module
experiences
overtemperature.
Reduce the load, or
improve ventilation.
For details about component replacement and maintenance involved in Troubleshooting and Alarm List,
consult Huawei maintenance engineers.