Huawei PowerCube 500 User Manual page 46

PowerCube 500 (CPS300-N18A1H)
User Manual
Indicator
Status
Issue 02 (2019-08-30)
Alarm Name Possible Cause
is removed.
 The lithium battery
is faulty.
Solar Function The CAN
Unit Module communication circuit
Comm Failure or the solar function
unit is abnormal.
Solar PV module cable
Protection connection is abnormal
or the module
experiences output
overvoltage due to an
internal fault.
AC Module
AC input is abnormal.
Protect
Copyright © Huawei Technologies Co., Ltd.
5 Alarms and Troubleshooting
Solution
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.
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.
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.
1. Check whether the AC input
voltage is abnormal.
 If yes, rectify the power
grid fault.

If no, contact Huawei
technical support.
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