Huawei LUNA2000-2.0MWH Series - Alarm Reference; CMU common alarms and troubleshooting measures

10 Alarm Reference
Alarm severities are dened as follows:
● Major alarm: The device is faulty or the external environment is abnormal. As
a result, the output power decreases or the device stops feeding to the grid.
● Minor alarm: Some components of the device are faulty but the device can
still connect to the grid and generate power.
● Warning: The device functions normally, but its output power decreases or
some authorization functions fail due to external factors.
NO TE
[HVAC-No] indicates the number of the air conditioner.
Table 10-1 CMU common alarms and troubleshooting measures
Alarm
ID
Alarm
Name
Severity Possible Cause Suggestion
3800 Water
Alarm
Major Cause ID = 1
Water is detected in the
battery cabin.
1. Check whether there is water in
the cabin. If yes, drain the water.
2. Check whether the devices in the
cabin are intact and normal. If yes,
manually clear the alarm. If not,
replace the damaged devices.
Cause ID = 2
Water is detected in the
control unit cabin.
3801 Door
Status
Alarm
Major Cause ID = 1–6
Battery compartment
door 1–6 is open.
Cause ID = 7
Battery compartment
door is open.
1. Check whether the cabin doors
are completely closed. If not, close
the doors completely.
2. Check whether the cable is
disconnected from the door status
sensor. If yes, connect the cable
correctly.
3. Check whether the door status
sensor is displaced. If yes, move it
back to the original position.
LUNA2000-2.0MWH Series Smart String ESS
User Manual 10 Alarm Reference
Issue 08 (2022-11-15) Copyright © Huawei Technologies Co., Ltd. 176