UPS5000-E-(40 kVA-320 kVA)
User Manual
7 Troubleshooting
Issue 10 (2015-09-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
204
No.
Case
Symptom
Possible Cause
Measure
fails.
module.
The power module is
faulty.
Replace the power
module.
2
The
inverter
is
abnorma
l.
The buzzer buzzes,
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.
3
The
charger
generate
s an
alarm.
The buzzer buzzes,
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.
4
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.
5
The
bypass is
abnorma
l.
The buzzer buzzes,
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.