Huawei UPS5000-A-30KTTL - Page 167

Case Symptom Possible Cause Suggestion
The charger
experiences
undervoltage.
Check whether the
congured number
of batteries is
correct. If the setting
is correct but the
alarm persists,
replace the power
unit.
The UPS
works in
bypass
mode
and does
not
transfer
to
inverter
mode.
Bypass
abnormal
When the mains is
normal, the UPS
works in bypass
mode and does not
transfer to inverter
mode.
The buzzer buzzes,
and the fault
indicator is on.
The UPS is set to
ECO mode.
Set the working
mode correctly.
The number of
bypass transfer times
reaches the upper
limit.
The bypass thyristor
is damaged.
The bypass unit
experiences
overtemperature.
On the LCD, choose
Clear Faults.
Replace the bypass
unit.
Reduce the load, or
improve ventilation.
NO TE
For details about how to replace UPS components, contact technical support.
UPS5000-A-(30 kVA-120 kVA)
User Manual 8 Troubleshooting
Issue 17 (2024-02-21) Copyright © Huawei Digital Power Technologies Co., Ltd. 158