Huawei UPS2000 Series - Rectifying Common Faults

UPS2000-G1-(1 kVA–3 kVA)
User Manual
6 Troubleshooting
Issue 05 (2013-07-17)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
27
UPS Status
Buzzer
Indicator
circuit
buzzes.
INV.: off
BYP: on
BATT: off
FAULT: on
OUTPUT: off
The UPS is
generating
alarms.
Battery
undervoltage
The buzzer beeps
at an interval of
0.5 second.
LINE: off
INV.: on
BYP: off
BATT: flashing
FAULT: flashing
OUTPUT: on
Tripped AC
input circuit
breaker or
abnormal AC
input
Every 10
seconds, the
buzzer beeps for
three consecutive
times at an
interval of 100
ms.
LINE: off
INV.: on
BYP: off
BATT: on
FAULT: off
OUTPUT: on
6.2 Rectifying Common Faults
Table 6-2 describes common faults and troubleshooting measures.
Table 6-2 Common faults and troubleshooting measures
Symptom
Possible Cause
Measures
The buzzer buzzes,
the FAULT
indicator is on, the
inverter is faulty,
and the UPS
switches to the
The UPS is being protected against
overload or short circuits.
Reduce load power, or
reconnect short-circuited
wires, and restart the
inverter.
The UPS triggers protection against
overtemperature.
Clean or replace fans.