Huawei LUNA2000-2.0MWH Series - Page 192

Alarm
ID
Alarm
Name
Severity Possible Cause Suggestion
3821 Air
Condition
er DC
Overvolta
ge
Major Cause ID = 1–13
1. The input voltage of
[HVAC-No] 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 technical support.
3822 Air
Condition
er DC
Undervolt
age
Major Cause ID = 1–13
1. The input voltage of
[HVAC-No] 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 technical support.
3825 UPS
Alarm
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.
LUNA2000-2.0MWH Series Smart String ESS
User Manual 10 Alarm Reference
Issue 08 (2022-11-15) Copyright © Huawei Technologies Co., Ltd. 182