Huawei LUNA2000-2.0MWH-1H0 - Page 148

Alar
m ID
Alarm
Name
Severit
y
Possible Causes Troubleshooting Suggestions
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 Combusti
ble Gas
Detection
Malfuncti
on
Major Cause ID=1
Too many combustible
gas sensor failures.
1. Repair the device based on the fault
alarm of the combustible gas
sensor.
2. On the Maintenance page, check
that the combustible gas sensor is
properly connected.
3851 Exhaust
Fan
Faulty
Major Cause ID=1-12
Exhaust fan is faulty.
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.
3827 Ambient
Temperat
ure High
Major Cause ID=1
The ambient temperature
in the battery cabin is too
high.
1. Check whether the air conditioners
in the battery cabin are faulty.
2. Check whether the doors of the
battery cabin are completely closed.
Cause ID=2
The ambient temperature
of the control unit cabin
is too high, which triggers
system derating or
shutdown.
1. Check whether the air conditioners
in the control unit cabin are faulty.
2. Check whether the doors of the
control unit cabin are completely
closed.
3852 Ambient
Temperat
ure Low
Major Cause ID=1
The ambient temperature
in the battery cabin is too
low.
1. Check whether the air conditioners
in the battery cabin are faulty.
2. Check whether the doors of the
battery cabin are completely closed.
Cause ID=2
The ambient temperature
in the control unit cabin
is too low.
1. Check whether the air conditioners
in the control unit cabin are faulty.
2. Check whether the doors of the
control unit cabin are completely
closed.
3828 Condensa
tion Risk
Minor Cause ID=1
Condensation risk exists
in the battery
compartment.
1. Check whether the air conditioners
in the battery cabin are faulty.
2. Check whether the doors of the
battery cabin are completely closed.
LUNA2000-2.0MWH-1H0, 2H0 Smart String ESS
User Manual 10 Alarm Reference
Issue 02 (2021-11-15) Copyright © Huawei Technologies Co., Ltd. 140