Huawei PowerCube 500 - Page 47

PowerCube 500 (CPS300-N18A1H)
User Manual
5 Alarms and Troubleshooting
Issue 02 (2019-08-30)
Copyright © Huawei Technologies Co., Ltd.
41
Indicator
Status
Alarm Name
Possible Cause
Solution
Steady
yellow
AC Failure

An AC power
failure occurs.

Switch off the AC
input circuit
breaker.

The input power
cable is aged,
short-circuited, or
open-circuited.
1. Measure the AC input
voltage and check whether
AC input is unavailable.

If yes, rectify the power
grid fault.

If no, go to the next step.
2. Check whether the AC input
circuit breaker is OFF.

If yes, check and repair
the AC power
distribution, and then
switch on the circuit
breaker.

If no, contact Huawei
technical support.
PV Array Fault

The PV input is
disconnected.

The PV module is
faulty.
1. Check whether the PV input
is properly connected.

If yes, go to the next step.

If no, reconnect the PV
input.
2. Check whether the PV
module input voltage is in
the range of 24 V to 130 V.

If yes, contact Huawei
technical support.

If no, replace the PV
module.
Blinking
red
12VDC output
Protect

Output overpower
occurs.

Output short circuit
occurs.

12 V output
overvoltage occurs.

Ambient
overtemperature
occurs.
1. Check whether the 12 V
output port is short-circuited
or overloaded.

If yes, rectify the short
circuit or reduce the load.

If no, go to the next step.
2. Check whether the function
module surface temperature
at noon is less than 45°C.

If yes, contact Huawei
technical support.

If no, add a sunshade.
24VAC output
Protect

Output overpower
occurs.

Output short circuit
occurs.

24 V output
1. Check whether the 24 V
output port is short-circuited
or overloaded.

If yes, rectify the short
circuit or reduce the load.