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UPS5000-S-600 kVA
User Manual (Singapore, Three-phase, Three-wire)
Table 7-1 Troubleshooting
Case
The
rectifier is
not
normal.
The
inverter is
not
normal.
The
charger
generates
an alarm.
The UPS
works in
Issue 01 (2021-04-14)
Symptom
The rectifier is
not working,
and the bus
voltage is not
boosted.
The buzzer is
activated, the
Fault indicator is
on, the inverter
is faulty, and the
UPS transfers to
bypass mode.
The buzzer is
activated, the
Fault indicator is
on, and the
charging
function fails.
When the mains
is normal, the
Copyright © Huawei Technologies Co., Ltd.
Possible Cause
● 380 V AC/400 V AC/415
V AC/420 V AC voltage
system: The input
voltage exceeds the
upper threshold 485 V
or is less than the lower
threshold 138 V.
● 480 V AC voltage
system: The input
voltage exceeds the
upper threshold 528 V
or is less than the lower
threshold 192 V.
PFC soft-startup fails.
The power module is
faulty.
The UPS is overloaded or
short-circuited.
Inverter overtemperature
occurs.
The power module is
faulty.
The charger fails.
The charger experiences
overcurrent.
The charger experiences
undervoltage.
Set the UPS working mode
to ECO mode.
7 Troubleshooting
Measure
Check whether the
input voltage
exceeds the
threshold. If yes,
contact the electric
power company.
Replace the power
module.
Replace the power
module.
Reduce load or
rectify short
circuits.
Install more air
conditioners or
ventilation devices
to ensure normal
temperatures
inside the
equipment room.
Replace the power
module.
Replace the power
module.
Replace the power
module.
Check whether the
configured number
of batteries is
correct. If the value
is correct but the
alarm persists,
replace the power
module.
Set the working
mode correctly.
143
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