Huawei LUNA2000-2.0MWH-1H0 - Page 147

Alar
m ID
Alarm
Name
Severit
y
Possible Causes Troubleshooting Suggestions
3821 Air
Condition
er DC
Overvolta
ge
Major Cause ID=1-13
1. The input voltage is
higher than the
overvoltage threshold.
2. The overvoltage
threshold setting is
improper.
3. The voltage test device
is faulty.
1. Check the voltage of the input
power supply. If the voltage is too
high, check the power distribution
device.
2. Check whether the overvoltage
threshold is correctly set. If not,
adjust it to a proper range.
3. Replace the voltage test device on
the control board.
4. If the fault persists, contact your
dealer or Huawei technical support.
3822 Air
Condition
er DC
Undervol
tage
Major Cause ID=1-13
1. The input voltage is
lower than the
undervoltage
threshold.
2. The undervoltage
threshold setting is
improper.
3. The voltage test device
is faulty.
1. Check the voltage of the input
power supply. If the voltage is too
low, check the power distribution
device.
2. Check whether the undervoltage
threshold is correctly set. If not,
adjust it to a proper value.
3. Replace the voltage test device on
the control board.
4. If the fault persists, contact your
dealer or Huawei technical support.
3825 A UPS
alarm
has been
generate
d.
Major Cause ID=1
A UPS alarm has been
generated.
Troubleshoot the fault by referring to
the alarm troubleshooting section in
the UPS user manual.
3826 Combusti
ble Gas
Alarm
Major Cause ID=1
1. The safety valve of the
lithium battery is open,
and combustible gas is
leaked.
2. Lithium battery
thermal runaway
occurs.
1. If no re occurs, shut down the
system and start the exhaust fan.
2. If a re occurs, close the container
door, start the re protection
system, and stay far away from the
container.
3849 Air
Exhaust
Malfuncti
on
Major Cause ID=1
There are too many faulty
exhaust fans.
1. Repair the exhaust fan based on the
fault alarm.
2. On the maintenance screen, check
that the exhaust fan is correctly
connected.
LUNA2000-2.0MWH-1H0, 2H0 Smart String ESS
User Manual 10 Alarm Reference
Issue 02 (2021-11-15) Copyright © Huawei Technologies Co., Ltd. 139