Huawei LUNA2000-2.0MWH-1H0 User Manual page 151

LUNA2000-2.0MWH-1H0, 2H0 Smart String ESS
User Manual
Alar Alarm
m ID Name
3843 TCU
Communi
cation
Failure
3844 Rectifier
Communi
cation
Failure
3845 SmartMo
dule
Communi
cation
Failure
3846 CMU
Communi
cation
Failure
3851 Exhaust
Fan
Faulty
3853 ESU
Physical
Location
Failure
3856 Battery
fault
protectio
n
Issue 02 (2021-11-15)
Severit Possible Causes
y
Minor Cause ID=1-2
TCU communication
failed.
Minor Cause ID=1
Rectifier communication
failed.
Minor Cause ID=1
SmartModule
communication failed.
Minor Cause ID=1
CMU communication
failed.
Minor Cause ID=1 - 12
Exhaust fan is faulty.
Minor Cause ID=1
ESU physical location
failure.
Major Cause ID=1
Some battery modules
fail critically, causing the
system to shut down.
Cause ID=2
The temperature of some
battery modules is too
low. As a result, the
system charge limit is
exceeded.
Copyright © Huawei Technologies Co., Ltd.
Troubleshooting Suggestions
1. Check whether the communications
cable of the device is correctly
connected.
2. Check whether the power supply of
the device is normal.
3. Check whether a certificate
expiration alarm exists in the alarm
list.
1. Check whether the communications
cable of the device is correctly
connected.
2. Check whether the power supply of
the device is normal.
1. Check whether the cable connection
of the exhaust fan is correct.
2. Check whether the TCU connected
to the exhaust fan works properly.
3. Check whether the exhaust fan is
faulty. If yes, replace it.
Check whether the communications
cable of the ESU is connected properly.
Perform maintenance based on the
faulty battery module alarm and its
handling suggestions.
10 Alarm Reference
143