Huawei Smart String ESS LUNA2000-200KWH-2H1 - Page 131

LUNA2000-200KWH-2H1 Smart String ESS
User Manual
6 Alarm Reference
Issue Draft (2022-10-30)
Copyright © Huawei Technologies Co., Ltd.
124
Alarm
ID
Alarm
Name
Alarm
Severit
y
Possible Cause
Suggestion
blocked.
4. If the fault persists, contact your technical
support.
3821
Air
Conditio
ner DC
Overvolt
age
Cause ID = 1–13
1. [HVAC-No] The input
voltage is higher than
the overvoltage
threshold.
2. The overvoltage
threshold setting is
improper.
3. The voltage test device
is faulty.
Measure the voltage of the air conditioner
power supply, record it, and contact your
technical support.
3822
Air
Conditio
ner DC
Undervol
tage
Cause ID = 1–13
1. [HVAC-No] The input
voltage is lower than
the undervoltage
threshold.
2. The undervoltage
threshold setting is
improper.
3. The voltage test device
is faulty.
Measure the voltage of the air conditioner
power supply, record it, and contact your
technical support.
3825
UPS
Alarm
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
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. Monitor the ESS remotely for 30 minutes to
check whether other exceptions (such as
abnormal ambient temperature, battery
voltage, battery temperature, and exhaust
fan startup) occur. If yes, shut down the
ESS. During remote monitoring, do not
approach the battery cabin or open the cabin
door.
2. If no exception is found during the remote
monitoring, send trained personnel to the
site and observe the system for 30 minutes
from a safe distance. If there is smoke or
fire, remotely power off the system,
evacuate the onsite personnel as soon as
possible, and call the fire emergency
number.
3. If no exception is found during remote
monitoring and onsite observation,
manually clear the alarm. If the alarm
clearance fails, contact your technical
support.