Alarm
ID
Alarm
Name
Severity Possible Cause Suggestion
3040 Incorrect
Bus
Connectio
n on Rack
Controller
Major Cause ID = 1
The output buses are
not connected in
parallel in the 1C
scenario.
If the system is in the array topology
identication process, wait until the
process is complete or exit the
process.
1. Locate the input and output
circuit breakers associated with
[ESC-No].
2. Issue a shutdown command, turn
o the switch on the battery side
and then the switch on the bus
side, and wait for 5 minutes.
3. Check whether the cable
connection to the bus side of the
power control module meets the
1C requirement by referring to
the quick installation guide.
4. After checking that the battery
power cable is correctly
connected, turn on the switch on
the battery side and then the
switch on the bus side, and issue
a startup command.
5. If the alarm persists, contact your
dealer or technical support.
LUNA2000-200KWH-2H1 Smart String ESS
Maintenance Manual 3 Alarm Reference
Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd. 54
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