Huawei LUNA2000-2.0MWH-1H1 - Page 197

Alarm
ID
Alarm
Name
Severity Possible Cause Suggestion
3845 SmartMod
ule
Communic
ation
Failure
Minor Cause ID = 1
SmartModule
communication failed.
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 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
Communic
ation
Failure
Minor Cause ID = 1
CMU communication
failed.
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 the cable securely.
3. If the fault persists, contact your
technical support.
3848 T/H
Control
Mode:
Manual
Minor Cause ID = 1
The temperature and
humidity control mode
is set to manual.
After the commissioning is
complete, set the temperature and
humidity control mode to
automatic.
3849 Air
Exhaust
Malfuncti
on
Major Cause ID = 1
There are too many
faulty exhaust fans.
Repair the exhaust fan based on
the fault alarm.
Cause ID = 2
There are too many
faulty TCUs.
1. Repair the TCU based on the
fault alarm.
2. On the maintenance screen,
check that the TCU is correctly
connected.
3850 Combustib
le Gas
Detection
Malfuncti
on
Major Cause ID = 1
There are too many
faulty combustible gas
sensors.
1. Repair the combustible gas
sensor based on the fault alarm.
2. On the maintenance screen,
check that the combustible gas
sensor is correctly connected.
LUNA2000-2.0MWH Series Smart String ESS
User Manual 10 Alarm Reference
Issue 08 (2022-11-15) Copyright © Huawei Technologies Co., Ltd. 187