Huawei PowerCube 500 - Page 45

PowerCube 500 (CPS300-N18A1H)
User Manual
5 Alarms and Troubleshooting
Issue 02 (2019-08-30)
Copyright © Huawei Technologies Co., Ltd.
39
Indicator
Status
Alarm Name
Possible Cause
Solution
incorrectly set.

If yes, reset the threshold.

If no, contact Huawei
technical support.
DC Overvolt.
The DC overvoltage
alarm threshold is
incorrectly set.
1. Reset the DC overvoltage
alarm threshold and check
whether the alarm persists.

If yes, contact Huawei
technical support.

If no, no further action is
required.
DC Undervolt.

The battery voltage
is below the
undervoltage alarm
threshold after a
long-time AC
power failure.

The DC
undervoltage alarm
threshold is
incorrectly set.
1. Check whether the battery
voltage is below the
undervoltage alarm threshold
after a long-time AC power
failure.

If yes, rectify the power
grid fault.

If no, go to the next step.
2. Check whether the DC
undervoltage alarm threshold
is incorrectly set.

If yes, reset the alarm
threshold.

If no, contact Huawei
technical support.
Power module
Update Failed

The module
experiences a
power failure
during an upgrade.

The module
experiences a
communication
failure during an
upgrade.
1. Check whether the function
module experiences a power
failure.

If yes, ensure that the
function module is
properly powered on.

If no, go to the next step.
2. Check whether the solar
function unit communicates
properly. Ensure that the
communication is proper,
continue the upgrade, and
check whether the alarm
persists.

If yes, replace the
function module.

If no, no further action is
required.
ESMU Missing

The lithium battery
1. Check whether the lithium