Huawei LUNA2000-200KWH-2H1 Maintenance Manual page 45

LUNA2000-200KWH-2H1 Smart String ESS
Maintenance Manual
Alarm Alarm
ID Name
3843 TCU
Commu
nication
Failure
3844 SMU
Commu
nication
Failure
3845 SmartM
odule
Commu
nication
Failure
3846 CMU
Commu
nication
Failure
Issue 02 (2023-02-28)
Alarm Possible Cause
Severit
y
Minor Cause ID = 1
TCU-1 communication
failed.
Minor Cause ID = 1
SMU communication
failed.
Minor Cause ID = 1
SmartModule
communication failed.
Minor Cause ID = 1
CMU communication
failed.
Copyright © Huawei Digital Power Technologies Co., Ltd.
Suggestion
1. Turn off the TCU power switch.
2. Check whether the communication
cable is correctly connected to the
device. If not, connect the cable
correctly.
3. Check whether the power supply of
the device is normal. If not, contact
your technical support.
1. Check whether the communication
cable is correctly connected to the
device. If not, reconnect the cable
properly.
2. Check whether the power cable of the
device is loose. If yes, connect it
securely.
3. If the fault persists, contact your
technical support.
1. Check whether the communication
cable is correctly connected to the
device. If not, reconnect the cable
properly.
2. Check whether the power cable of the
device is loose. If yes, connect it
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. If not, reconnect the cable
properly.
2. Check whether the power cable of the
device is loose. If yes, connect it
securely.
3. If the fault persists, contact your
technical support.
3 Alarm Reference
39