This function is enabled by default. The inverter automatically detects arc faults.
To disable this function, log in to the FusionSolar App, enter the Device
Commissioning screen, choose Settings > Feature parameters, and disable AFCI.
The AFCI function works only with Huawei optimizers or ordinary PV modules, but does not
support third-party optimizers or intelligent PV modules.
Clearing Alarms
The AFCI function involves the DC arc fault alarm.
The inverter has the AFCI alarm automatic clearance mechanism. If an alarm is
triggered for less than ve times within 24 hours, the inverter automatically clears
the alarm. If the alarm is triggered for ve times or more within 24 hours, the
inverter locks for protection. You need to manually clear the alarm on the inverter
so that it can work properly.
You can manually clear the alarm as follows:
● Method 1: FusionSolar App
Log in to the FusionSolar App and choose Me > Device commissioning. On
the Device commissioning screen, connect and log in to the inverter that
generates the AFCI alarm, tap Alarm management, and tap Clear on the
right of the DC arc fault alarm to clear the alarm.
Figure 7-6 Alarm management
● Method 2: FusionSolar Smart PV Management System
Log in to the FusionSolar Smart PV Management System using a non-owner
account, choose Maintenance > Alarm Management, select the DC arc fault
alarm, and click Clear to clear the alarm.
SUN2000-(5K-12K)-MAP0 Series
User Manual 7 Power-On and Commissioning
Issue 01 (2024-05-13) Copyright © Huawei Digital Power Technologies Co., Ltd. 104
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