Alarm
ID-
Cause
ID
Alarm
Name
Alarm
Severit
y
Alarm
Clearan
ce
Mode
Impact on the System
Handling Suggestion
0042-02 Internal
fault
Critical
Manual
/Power-
off
The UPS shuts down.
Possible cause: The soft-
start resistor is
damaged.
Measure: Contact
Huawei technical
support for repair.
0042-03 Internal
fault
Minor
Automa
tic
The power supply from the
UPS and system is not
affected.
Possible cause: The NTC
is not connected or is
damaged.
Measure: Contact
Huawei technical
support for repair.
0042-09 Internal
fault
Critical
Automa
tic
The inverter shuts down.
Possible cause: Self-load
cable connections are
incorrect.
Measure: Reconnect
cables.
0042-10 Internal
fault
Critical
Automa
tic
If the inverter has not
started, the UPS has no
output, and inverter startup
is not allowed.
If the inverter has started,
inverter operation is not
affected, but transfer to
bypass mode is not allowed.
Possible cause: The
bypass input cable
connections do not
match the output
system.
Measure: Ensure that
the bypass input cable
connections match the
output system.
0042-11 Internal
fault
Critical
Power-
off
After the parallel system is
powered on, an incorrect
bypass phase sequence is
detected on a UPS. The
parallel system has not
output.
The parallel system works in
inverter mode. The newly
added UPS has no output
because bypass cables are
incorrectly connected.
The parallel system works in
bypass mode. The parallel
system has no output
because bypass cables for
the newly added UPS are
incorrectly connected.
Possible cause: The
bypass phase sequences
in the parallel system
do not match.
Measure: Check bypass
input phase sequences
in the parallel system.
UPS2000-G- (6 kVA-20 kVA)
User Manual
D Alarm Handling
Issue 18 (2021-07-16)
Copyright © Huawei Technologies Co., Ltd.
157