Huawei UPS5000-S-300 kVA User Manual page 156

UPS5000-S-300 kVA User Manual
(3P3W, 200 V)
Case
normal.
The
inverter is
not
normal.
The
charger
generates
an alarm.
The UPS
works in
bypass
mode and
does not
transfer to
inverter
mode.
The bypass
is not
normal.
Issue 01 (2020-03-06)
Symptom
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 UPS
works in bypass
mode and does not
transfer to inverter
mode.
The buzzer is
activated, and the
Fault indicator is
on.
For details about component replacement and maintenance involved in Troubleshooting and Alarm List,
consult Huawei maintenance engineers.
Copyright © Huawei Technologies Co., Ltd.
Possible Cause
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.
The bypass transfer times
reach the upper threshold.
The bypass thyristor is
damaged.
The bypass module
experiences overtemperature.
7 Troubleshooting
Measure
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.
Clear the bypass
transfer times on the
LCD.
Replace the bypass
module.
Reduce the load, or
improve ventilation.
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