Hsu Troubleshooting - Huawei PowerCube 5000 User Manual

PowerCube 5000
User Manual (SmartLi 100Ah)

8.1.5 HSU Troubleshooting

Table 8-5 Troubleshooting
Troubleshooting
All indicators on the HSU
are off though it
communicates with the
SMU properly.
All indicators on the HSU
are off and it fails to
communicate with the SMU.
The alarm indicator (yellow)
on the HSU is on.
The fault indicator (red) on
the HSU is on.
The running indicator
(green) on the HSU is on,
and the HSU fails to
communicate with the SMU
Issue 02 (2020-03-17)
Possible Causes
 The PV and battery
inputs are abnormal.

The HSU is damaged.

The HSU is in poor
contact with the rack
backplane.
 The HSU is damaged.
 Other components are
faulty.

There is an alarm about
the parallel
communication link.
 The HSU is damaged.
 Other components are
faulty.

The parallel
communication link is
abnormal.
 EPO is triggered.
 The HSU is not ready.
 The HSU is damaged.
 The communication link
of the HSU is abnormal.
 The HSU is damaged.
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8 Troubleshooting
Solution
1. Check that the PV and
battery cables are
connected correctly and
reliably.
2. If the indicators are still
off, replace the HSU.
1. Check that the HSU is
securely connected to the
rack backplane.
2. If the indicators are still
off, replace the HSU.
1. Query monitoring
information to determine
the fault type and check
whether components
such as the PV, battery,
and inverter are normal.
2. Check that the HSU is
securely connected to the
rack backplane.
3. If the alarm indicator is
still on, replace the HSU.
1. Query monitoring
information to determine
the fault type and check
whether components
such as the PV and
battery are normal.
2. Check that the HSU is
securely connected to the
rack backplane.
3. Check the EPO button. If
EPO is triggered, check
whether the fault
indicator on the HSU is
off after it is started.
4. Check that the ready
switch on the HSU is in
Ready state.
5. If the fault indicator is
still on, replace the HSU.
1. Check that the HSU is
securely connected to the
rack backplane.
2. If the communication
failure persists, replace
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