Huawei PowerCube 500 - Alarms and Troubleshooting; Function Module

PowerCube 500 (CPS300-N18A1H)
User Manual
5 Alarms and Troubleshooting
Issue 02 (2019-08-30)
Copyright © Huawei Technologies Co., Ltd.
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5 Alarms and Troubleshooting
5.1 Function Module
Table 5-1 Alarms and troubleshooting (power unit)
Indicator
Status
Alarm Name
Possible Cause
Solution
Blinking
yellow
AC
Overvoltage

The AC voltage is
too high.

The AC detection
circuit of the
module is faulty.
1. Check whether the AC input
voltage is abnormal.

If yes, locate the cause
and rectify the fault to
prevent high voltage from
damaging the function
module.

If no, contact Huawei
technical support.
AC
Undervoltage

The AC input
voltage is too low.

Cables are loose.
1. Check whether the AC input
voltage is abnormal.

If yes, rectify the power
grid fault.

If no, go to the next step.
2. Check that cables are
connected properly.

If yes, contact Huawei
technical support.

If no, reconnect the
cables.
LLVD Low
Voltage
Disconnected
The battery voltage
drops to the load low
voltage disconnection
(LLVD) voltage
threshold due to a
long-time AC power
failure.
1. Check whether the battery is
discharging due to a
long-time AC power failure.

If yes, rectify the power
grid fault.

If no, go to the next step.
2. Check whether the LLVD
voltage threshold is