Alarm
ID
Alarm
Name
Severity Possible Cause Suggestion
Malfuncti
on
Cause ID = 2
The air conditioners in
the control unit cabin
are faulty.
3833 Rectier
Fault
Major Cause ID = 1–6
The rectier hardware is
faulty.
1. Replace the rectier [NUMBER].
2. If the fault persists, contact your
dealer or technical support.
3834 Rectier
Protection
Major Cause ID = 1–6
1. The AC voltage is
abnormal.
2. The ambient
temperature is too
high.
1. Check whether the AC input
voltage is greater than 300 V. If yes,
check the power supply.
2. Check whether the air vent of
rectier [NUMBER] is blocked. If
yes, clean it. Check whether there is
a heat source near the air vent. If
yes, remove the heat source. Check
whether the heat dissipation fan is
damaged. If yes, replace the
rectier.
3. If the fault persists, contact your
technical support.
3835 Rectier
Communic
ation
Failure
Major Cause ID = 1–6
1. The rectier has been
removed.
2. The rectier is faulty
and not working.
1. Turn o the AC input switch of
the PSU.
2. Remove rectier [NUMBER] and
insert it again.
3. If the fault persists, replace
rectier [NUMBER] or the
monitoring module.
4. If the fault persists, contact your
technical support.
3836 Rectier
Power
Failure
Major Cause ID = 1–6
The AC loop is
disconnected.
1. Check whether the AC input
voltage is less than 80 V. If yes,
check the power supply. If not,
replace rectier [NUMBER].
2. If the fault persists, contact your
technical support.
3837 Rectier
Output
Overvolta
ge
Major Cause ID = 1–6
Lockout has occurred
due to output
overvoltage.
1. Remove the rectier and then
insert it 1 minute later.
2. If the fault persists, contact your
dealer or technical support.
LUNA2000-2.0MWH Series Smart String ESS
User Manual 10 Alarm Reference
Issue 08 (2022-11-15) Copyright © Huawei Technologies Co., Ltd. 185