Huawei LUNA2000-2.0MWH Series User Manual page 227

LUNA2000-2.0MWH Series Smart String ESS
User Manual
Alarm Alarm
ID Name
3048 ESM
Auxiliary
Power
Supply
Fault
3055 Undertem
perature
on
Optimizati
on Unit of
Battery
Pack
Issue 08 (2022-11-15)
Severity Possible Cause
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.
Warning Cause ID = 1
The black start auxiliary
power supply relay
control is faulty.
Cause ID = 2
The black start button
is faulty.
Cause ID = 3
The black start auxiliary
power supply cannot be
powered-off properly.
Cause ID = 4
The black start function
cannot be enabled.
Cause ID = 5
The primary and
secondary sources
disabling function is
faulty.
Major Cause ID = 1
The ambient
temperature is
excessively low.
Copyright © Huawei Technologies Co., Ltd.
10 Alarm Reference
Suggestion
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 off 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.
1. System running is not affected.
2. Locate the input and output
circuit breakers associated with
[ESC-No].
3. Issue a shutdown command,
turn off 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.
1. Check whether the air
conditioner is running properly.
2. If the alarm persists, contact
your dealer or technical support.
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