This function is enabled by default. The SUN2000 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.
Clearing Alarms
The AFCI function involves the DC arc fault alarm.
The SUN2000 has the AFCI alarm automatic clearance mechanism. If an alarm is
triggered for less than ve times within 24 hours, the SUN2000 automatically
clears the alarm. If the alarm is triggered for ve times or more within 24 hours,
the SUN2000 locks for protection. You need to manually clear the alarm on the
SUN2000 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 My > Device Commissioning. On
the Device Commissioning screen, connect and log in to the SUN2000 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 7-17 Alarm management
● Method 2: FusionSolar Smart PV Management System
Log in to the FusionSolar Smart PV Management System using a non-owner
account, choose Intelligent O&M > Alarm Management, select the DC arc
fault alarm, and click Clear to clear the alarm.
SUN2000-(2KTL-6KTL)-L1
User Manual 7 Man-Machine Interaction
Issue 04 (2021-04-01) Copyright © Huawei Technologies Co., Ltd. 76
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