Huawei UPS2000-A-6KTTL-S - Troubleshooting Common Faults; Common Faults and Solutions

UPS2000-A-(6 kVA-10 kVA)
User Manual
8 Troubleshooting
Issue 05 (2019-12-19)
Copyright © Huawei Technologies Co., Ltd.
118
8 Troubleshooting
If the UPS is faulty, alarm information is displayed on the LCD. Clear critical alarms before
powering on the UPS again. Otherwise, the fault scope expands or the UPS is damaged.
Table 8-1 lists the solutions to common faults.
Table 8-1 Solutions to common faults
No.
Symptom
Possible Cause
Measure
1
The mains switch is ON.
The LCD does not display
anything. The system
does not perform
self-tests.

The input
power supply
is not
connected.

The input
voltage
exceeds the
limit.

Check the input power cable
connection.

Use a multimeter to check that
the UPS input voltage meets
specifications.
2
The mains is normal, but
the bypass indicator is off.
The UPS runs in battery
mode.

The mains
switch is
OFF.

The input
power cable
is not
securely
connected.

Turn on the mains switch.

Check the input power cable
connection.
3
The UPS does not report
faults, but has no output
voltage.
The output
power cable is
not securely
connected.
Check the output power cable
connection.
4
The UPS does not start
after you press

is not
pressed long
enough.

Press for more than 5
seconds until you hear a beep
sound.