Huawei LUNA2000-200KWH-2H1 - Page 174

Alarm
ID
Alarm
Name
Alarm
Severit
y
Possible Cause Suggestion
3859 Forced
Dehumi
dicatio
n
Started
Major Cause ID = 1
1. Forced
dehumidication
has been manually
started.
2. To prevent
condensation in the
cabinet after the
cabinet door is
opened, the system
automatically starts
forced
dehumidication.
1. Wait for 20 to 30 minutes for the
system to automatically stop forced
dehumidication.
2. If you manually start forced
dehumidication, the system will shut
down after forced
dehumidication is
completed. You need to manually start
the system.
3. If forced
dehumidication is
automatically started, the system
automatically restores to the original
state after forced
dehumidication is
completed.
3860 IO
Expansi
on
Board
Fault
Minor Cause ID = 1
The IO expansion
board is faulty.
1. Check whether the cable between the
I/O expansion board and the CMU
(RS485-1) is correctly connected. If
not, reconnect the cable.
2. Check whether the power cable of the
I/O expansion board is loose. If yes,
connect the cable securely.
3. If the fault persists, contact your
technical support.
1105 Device
Address
Conict
Major Cause ID = 1
The communication
address of the current
device conicts with
that of the device to
be connected.
Change the local address or the address
of the device to be connected.
NO TE
If ALM-3833 Rectier Fault, ALM-3834 Rectier Protection, ALM-3835 Rectier
Communication Failure, ALM-3836 Rectier Power Failure, or ALM-3837 Rectier Output
Overvoltage is generated, rectify the fault by referring to the following table.
Table 13-2 PSU indicator status and troubleshooting
Indicator
Color Status Description Suggestion
Power
indicator
Green Steady on The PSU has
an AC input.
Normal.
LUNA2000-200KWH-2H1 Smart String ESS
User Manual 13 Alarm Reference
Issue 03 (2023-03-30) Copyright © Huawei Digital Power Technologies Co., Ltd. 165