Huawei SUN2000P-450W-P2 Quick Start Manual page 9

Fault Alarm Cause
The optimizer
Upgrade failed software
upgrade failed.
6
Replacing an Optimizer
1. Power off the solar inverter and remove
the faulty optimizer.
3. Power on the solar inverter. On the Device
Commissioning screen, choose
Maintenance > Subdevice management,
and tap Auto search to add the new
optimizer.
7
Precautions
Scenario Optimizer
Off-grid No
On/Off-
Yes
grid
On/Off-
Yes
grid
Suggestions
1. When the sunlight is normal, perform the optimizer upgrade
again.
2. If the fault persists, contact your dealer or Huawei technical
support.
Energy
Description
Storage
Yes Optimizers are not supported.
After the power grid fails, the system switches to the off-grid
mode and is powered off at night. If the power grid is not
recovered on the next day, the system cannot start
No
automatically when the irradiance is normal. After the power
grid recovers and the irradiance is normal, the system
automatically starts.
After the power grid fails, the system switches to the off-grid
•
mode. If the battery end-of-discharge SOC is greater than or
equal to 5%, the system shuts down at night when the SOC
reaches the lower limit. If the power grid is not recovered on
the next day, the system can black start through battery
when the irradiance is normal.
Yes • After the power grid fails, the system switches to the off-grid
mode. If the battery end-of-discharge SOC is less than to 5%,
the system shuts down at night when the SOC reaches the
lower limit. If the power grid is not recovered on the next
day, the system may fail to black start through battery when
the irradiance is normal. After the power grid recovers and
the irradiance is normal, the system automatically starts.
2. Install a new optimizer and correctly
connect its cables.
4. On the Device Commissioning screen,
choose Maintenance > Optimizer layout,
select the corresponding PV module, and
bind the new optimizer. Click Submit.
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