UPS2000-A-(6 kVA-10 kVA)-RTL
User Manual
A Alarm Handling
Issue 07 (2020-01-10)
Copyright © Huawei Technologies Co., Ltd.
97
Alarm
Name
Alarm
ID
Alarm
Cause
ID
Alarm
level
Alarm
Clear Mode
Impact on the
System
Repair Proposal
overload
clear
overload causes the
UPS to supply no
power.
exceeds the rated loading
capacity of the bypass.
Measure: Lower the load
or replace the UPS with
a UPS with a larger
capacity.
Output
overload
42
3
Critica
l
Automatic
clear
The UPS starts
automatically after
it shuts down; the
UPS transfers to
another working
mode or shuts
down.
Possible cause: The load
exceeds the rated loading
capacity of the inverter.
Measure: Lower the load
or replace the UPS with
a UPS with a larger
capacity.
Output
overload
42
4
Critica
l
Manual
clear/Power-
off clear
The UPS cannot
start.
Possible cause: The load
exceeds the rated loading
capacity of the bypass.
Measure: Lower the load
or replace the UPS with
a UPS with a larger
capacity.
Output
overload
42
5
Critica
l
Manual
clear/Power-
off clear
The UPS has no
output when the
load is excessively
heavy.
Possible cause: The load
is faulty, the load
capacity is large, or the
load is short-circuited.
Measure: Check whether
the load is faulty.
Bypass
backfeed
47
1
Critica
l
Power-off
clear
The bypass input
circuit breaker in
the PDU is OFF.
Possible cause: Bypass
components are faulty.
Measure: Contact
Huawei technical
support.
EPO
55
1
Critica
l
Manual
clear/Power-
off clear
The UPS shuts
down.
Possible cause: You have
pressed the EPO switch.
Measure: Restore the
EPO switch status, clear
the alarm, and restart the
UPS.
Bypass
transfer
times limit
56
1
Minor
Manual
clear/Power-
off clear
The UPS cannot
transfer to an
unsteady side.
Possible cause: The
output is transferred
more than three times
within 30 minutes.
Measure: Clear the alarm
and restart the UPS.