Huawei LUNA2000-200KWH-2H1 User Manual page 171

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