UPS5000-E-(360 kVA-480 kVA)
User Manual (40 kVA Power Modules)
7 Troubleshooting
Issue 07 (2020-01-10)
Copyright © Huawei Technologies Co., Ltd.
197
Case
Symptom
Possible Cause
Measure
boosted.
threshold 80 V.
power company.
PFC soft-startup fails.
Replace the power
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.
The power module is
faulty.
Replace the power
module.
The charger
generates 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.
On the LCD, choose
Clear Faults
.
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.