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5. Turn on the DC switch (if any) between the PV strings and the inverter.
6. Turn on the DC switch at the bottom of the inverter.
7. Check that the off-grid load power does not exceed the off-grid output power allowed by
the inverter.
8. After ensuring that the load circuit is normal, turn on the AC switch of the Backup Box.
9. Observe the LED indicators on the front of the inverter to check the running status of the
inverter.
Parameter Settings
Open the FusionSolar app, log in to intl.fusionsolar.huawei.com using the installer account,
choose
My
>
Device Commissioning
, and connect to the WLAN hotspot of the solar inverter.
On the home page, choose
Setting
>
Feature parameters
to set the off-grid/grid-tied control
parameters.
6
System Commissioning
Download and install the latest version of the FusionSolar app by referring
to the quick guide for the corresponding inverter model or the
FusionSolar
App Quick Guide. Register an installer account and create a plant and
owner (skip this step if an account has been created). You can scan the QR
code to obtain the
FusionSolar App Quick Guide.
During system deployment, the AC power supply needs to be connected to ensure that the off-
grid/grid-tied switching function of the Backup Box can be verified.
Category Status (Blinking Slowly, On for 1s and then Off
for 1s)
Definition
Running
indication
N/A
Steady green
Steady green
On-grid
Steady orange
Steady orange
Backup
Blinking orange slowly
Off
Standby in backup mode
Blinking orange slowly
Blinking orange slowly
Overload in backup mode
If the off-grid load is overloaded, indicators
and on the inverter blink orange slowly.
Reduce the off-grid load power and manually clear the alarm or until the inverter is recovered.
If the inverter is standby in off-grid mode, check the inverter alarms and rectify the fault.
