Huawei LUNA2000-200KWH-2H1 - 10.3 Upgrading the SmartLogger

Alarm
ID
Alarm
Name
Alarm
Severit
y
Possible Cause Suggestion
3844 SMU
Commu
nication
Failure
Minor Cause ID = 1
SMU communication
failed.
1. Check whether the communication
cable is correctly connected to the
device by referring to the
conguration manual. If not,
reconnect the cable properly.
2. Check whether the power cable of the
device is loose. If yes, connect the
cable securely.
3. If the fault persists, contact your
technical support.
3845 SmartM
odule
Commu
nication
Failure
Minor Cause ID = 1
SmartModule
communication failed.
1. Check whether the communication
cable is correctly connected to the
device by referring to the
conguration manual. If not,
reconnect the cable properly.
2. Check whether the power cable of the
device is loose. If yes, connect the
cable securely.
3. Check whether a
certicate expiration
alarm is displayed in the alarm list. If
yes, contact your technical support.
4. If the fault persists, contact your
technical support.
3846 CMU
Commu
nication
Failure
Minor Cause ID = 1
CMU communication
failed.
1. Check whether the communication
cable is correctly connected to the
device by referring to the
conguration manual. If not,
reconnect the cable properly.
2. Check whether the power cable of the
device is loose. If yes, connect the
cable securely.
3. If the fault persists, contact your
technical support.
3847 Built-in
Fire
Suppres
sion
Pressure
Low for
Extende
d
Periods
Major Cause ID = 1
The gas pressure of the
built-in re
suppression module
has been low for more
than 3 days.
Check whether the pressure gauge
pointer of the re suppression module is
in the green area. If not, replace the re
suppression module.
LUNA2000-200KWH-2H1 Smart String ESS
User Manual 13 Alarm Reference
Issue 03 (2023-03-30) Copyright © Huawei Digital Power Technologies Co., Ltd. 162