Huawei UPSJZ-T Series User Manual

8 Troubleshooting
If a UPS runs abnormally, rectify the fault by referring to the following table.
Table 8-1 Faults and troubleshooting measures
Symptom Possible Cause Measure
The active power supply
is normal, but the LCD is
o and no buzzer beeps.
The mains input power
cable may be loose.
Check that the input
power cable is
connected.
The mains input power
cable is mistakenly
connected to the output
terminal of the UPS.
Correctly connect the
mains input power cable
to the UPS mains input
terminal.
and blink on the
LCD, and the buzzer
beeps once every second.
Either the external
battery or built-in
battery is incorrectly
connected.
Check that all batteries
are correctly connected.
and blink on the
LCD, and the buzzer
beeps twice every
second.
The UPS is overloaded. Remove the exceeding
load from the UPS
output terminal.
The UPS is overloaded
and now it is supplying
grid power to loads in
bypass mode.
Remove the exceeding
load from the UPS
output terminal.
The UPS is overloaded
for many times in a short
period. The UPS works in
bypass mode, and it
directly connects the
equipment to the active
power supply.
Remove the exceeding
load from the UPS
output terminal, shut
down the UPS, and then
restart it.
UPSJZ-T-(1 kVA–3 kVA)
User Manual 8 Troubleshooting
2022-08-15 90

Huawei UPSJZ-T Series Specifications

General

Brand	Huawei
Model	UPSJZ-T Series
Category	UPS
Language	English