Huawei PowerCube 500 - Page 46

PowerCube 500 (CPS300-N18A1H)
User Manual
5 Alarms and Troubleshooting
Issue 02 (2019-08-30)
Copyright © Huawei Technologies Co., Ltd.
40
Indicator
Status
Alarm Name
Possible Cause
Solution
is removed.

The lithium battery
is faulty.
battery is removed.

If yes, reinstall the
lithium battery.

If no, go to the next step.
2. Check whether the lithium
battery fails to work.

If yes, replace the lithium
battery.

If no, contact Huawei
technical support.
Solar Function
Unit Module
Comm Failure
The CAN
communication circuit
or the solar function
unit is abnormal.
1. Check whether the output
CAN cable of the function
module is properly
connected.

If yes, go to the next step.

If no, reconnect the cable.
2. Replace the function module
and check whether the alarm
persists.

If yes, contact Huawei
technical support.

If no, no further action is
required.
Solar
Protection
PV module cable
connection is abnormal
or the module
experiences output
overvoltage due to an
internal fault.
1. Check whether the input
voltage is in the range of 24
V to 130 V when the sunlight
is normal in daytime.

If yes, go to the next step.

If no, reconnect PV
modules because only a
maximum of three PV
modules can be connected
in series.
2. Check whether the ambient
temperature at noon is less
than 45°C.

If yes, contact Huawei
technical support.

If no, add a sunshade.
AC Module
Protect
AC input is abnormal.
1. Check whether the AC input
voltage is abnormal.

If yes, rectify the power
grid fault.

If no, contact Huawei
technical support.