Alar
m ID
Alarm
Name
Severit
y
Possible Cause Suggestion
3033 Communi
cation
Failure on
Power
Control
Unit of
Rack
Controller
Major Cause ID = 1
The communication
fails inside the ESC.
1. Determine the positions of the input
and output circuit breakers associated
with [ESC-No] and the DC output
power switch of the PSU.
2. Issue a hibernation command to the
ESR corresponding to the ESC, and
turn
o the switch on the battery
side, the switch on the bus side, and
the DC output switch of the PSU.
Then wait for 5 minutes.
3. Turn on the DC output switch of the
PSU, the switch on the battery side,
and the switch on the bus side in
sequence, and issue a running
command.
4. If the alarm persists, contact the
vendor or technical support.
LUNA2000-200KWH-2H1 Smart String ESS
User Manual 13 Alarm Reference
Issue 03 (2023-03-30) Copyright © Huawei Digital Power Technologies Co., Ltd. 177
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