Afci; Clearing Alarms; Fusionsolar App - Huawei SUN2000-15KTL-50KTL-M3 Series User Manual

Replacing SUN2000-(15KTL-50KTL) Series with
SUN2000-(15KTL-50KTL)-M3 Series
User Manual
Function
If PV modules or cables are not properly connected or damaged, electric arcs may occur,
which may cause fire. Huawei SUN2000s provide unique arc detection in compliance with
UL 1699B-2018 to ensure the safety of users' lives and property.
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 five times within 24 hours, the SUN2000 automatically clears the alarm. If the
alarm is triggered for five 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:

Issue 01 (2021-04-05)
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.
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