Alarms And Troubleshooting; Function Module - Huawei PowerCube 500 User Manual

PowerCube 500 (CPS300-N18A1H)
User Manual

5.1 Function Module

Table 5-1 Alarms and troubleshooting (power unit)
Indicator
Status
Blinking
yellow
Issue 02 (2019-08-30)
5

Alarms and Troubleshooting

Alarm Name Possible Cause

AC
Overvoltage

AC 
Undervoltage

LLVD Low The battery voltage
Voltage drops to the load low
Disconnected voltage disconnection
(LLVD) voltage
threshold due to a
long-time AC power
failure.
Copyright © Huawei Technologies Co., Ltd.
The AC voltage is
too high.
The AC detection
circuit of the
module is faulty.
The AC input
voltage is too low.
Cables are loose.
5 Alarms and Troubleshooting
Solution
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.
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.
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
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