Huawei LUNA2000-2.0MWH-1H0 User Manual page 154

LUNA2000-2.0MWH-1H0, 2H0 Smart String ESS
User Manual
Alar Alarm
m ID Name
3019 Cluster
controller
bus side
overvolta
ge
3020 Reverse
connectio
n on the
bus side
of the
cluster
controller
Issue 02 (2021-11-15)
Severit Possible Causes
y
Major Cause ID = 1-3
The bus cable is not
correctly connected or
the bus voltage exceeds
the maximum operating
voltage of the power
module.
Major Cause ID = 1-3
The positive and
negative poles of the
bus are reversely
connected.
Copyright © Huawei Technologies Co., Ltd.
Troubleshooting Suggestions
1. Determine the position of the input
and output circuit breakers associated
with [ESC-No].
2. Send a shutdown command, turn off
the battery switch and then the bus
switch, and wait for 5 minutes.
3. Check the cable connection to the
power control module bus by
referring to the product maintenance
manual.
4. After verifying that the battery power
cable is correctly connected, turn on
the battery switch and bus switch in
sequence to send a startup
command.
5. If the alarm persists, contact your
dealer or technical support.
1. Determine the position of the input
and output circuit breakers associated
with [ESC-No].
2. Send a shutdown command, turn off
the battery switch and then the bus
switch, and wait for 5 minutes.
3. Check whether the cable between the
busbar-side copper bar of the power
control module and the DC PDC is
reversely connected by referring to
the product maintenance manual.
4. After verifying that the battery power
cable is correctly connected, turn on
the battery switch and bus switch in
sequence to send a startup
command.
5. If the alarm persists, contact your
dealer or technical support.
10 Alarm Reference
146