Huawei LUNA2000-2.0MWH Series - Page 227

Alarm
ID
Alarm
Name
Severity Possible Cause Suggestion
Cause ID = 4
1. The voltage of the
battery pack or its
cell is too low.
2. The battery pack has
been stored for a
long period of time.
3. The battery pack has
been idle for a long
time after grid
connection.
1. Determine the positions of the
input and output circuit breakers
of the ESC corresponding to
[ESR-CabinetNo ESM-SlotNo].
2. Issue a shutdown command,
turn
o the switch on the
battery side, the switch on the
bus side, and the AC power
supply switch, and wait for 5
minutes.
3. Turn on the AC power supply
switch, the switch on the battery
side, and the switch on the bus
side in sequence, and issue a
startup command.
4. If the alarm persists, contact
your dealer or technical support.
3048 ESM
Auxiliary
Power
Supply
Fault
Warning Cause ID = 1
The black start auxiliary
power supply relay
control is faulty.
1. System running is not aected.
2. Locate the input and output
circuit breakers associated with
[ESC-No].
3. Issue a shutdown command,
turn
o the switch on the
battery side, the switch on the
bus side, and the AC power
supply switch, and wait for 5
minutes.
4. Turn on the AC power supply
switch, the switch on the battery
side, and the switch on the bus
side in sequence, and issue a
startup command.
5. If the alarm persists, contact
your dealer or technical support.
Cause ID = 2
The black start button
is faulty.
Cause ID = 3
The black start auxiliary
power supply cannot be
powered-o properly.
Cause ID = 4
The black start function
cannot be enabled.
Cause ID = 5
The primary and
secondary sources
disabling function is
faulty.
3055 Undertem
perature
on
Optimizati
on Unit of
Battery
Pack
Major Cause ID = 1
The ambient
temperature is
excessively low.
1. Check whether the air
conditioner is running properly.
2. If the alarm 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. 217