Huawei LUNA2000-2.0MWH-1H0 User Manual page 147

LUNA2000-2.0MWH-1H0, 2H0 Smart String ESS
User Manual
Alar Alarm
m ID Name
3821 Air
Condition
er DC
Overvolta
ge
3822 Air
Condition
er DC
Undervol
tage
3825 A UPS
alarm
has been
generate
d.
3826 Combusti
ble Gas
Alarm
3849 Air
Exhaust
Malfuncti
on
Issue 02 (2021-11-15)
Severit Possible Causes
y
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.
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.
Major Cause ID=1
A UPS alarm has been
generated.
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.
Major Cause ID=1
There are too many faulty
exhaust fans.
Copyright © Huawei Technologies Co., Ltd.
Troubleshooting Suggestions
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.
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.
Troubleshoot the fault by referring to
the alarm troubleshooting section in
the UPS user manual.
1. If no fire occurs, shut down the
system and start the exhaust fan.
2. If a fire occurs, close the container
door, start the fire protection
system, and stay far away from the
container.
1. Repair the exhaust fan based on the
fault alarm.
2. On the maintenance screen, check
that the exhaust fan is correctly
connected.
10 Alarm Reference
139