AFCI

Function Description

If PV modules or cables are incorrectly connected or damaged, electric arcs may be generated, which may cause fire. Huawei inverters provide arc detection to ensure the safety of users' lives and property.

This function is enabled by default. To disable this function, go to the Device commissioning screen from the FusionSolar app, choose Settings > Feature parameters, and disable AFCI test.

For details about how to go to the Device commissioning screen, see Scenario 3: FusionSolar App Cannot Access the Internet.

Starting the AFCI Self-Check

Log in to the FusionSolar app as installer. On the Device commissioning screen, choose Maintenance, and tap Start AFCI check. In the dialog box that is displayed, tap Confirm.

The initial password is 00000a. Use the initial password upon first power-on and change it immediately after login. To ensure account security, change the password periodically and keep the new password in mind. Not changing the initial password may cause password disclosure. A password left unchanged for a long period of time may be stolen or cracked. If a password is lost, devices cannot be accessed. In these cases, the user is liable for any loss caused to the PV plant.

Figure E-1 Start AFCI check

Clearing Alarms

Data in the screenshots is for reference only. The actual screens prevail.

The AFCI function may cause DC arc fault, which can be cleared in the following three ways:

• FusionSolar app local commissioning tool
  On the Device commissioning screen, choose Device Information > Alarm management, and tap Delete on the right of the alarm.

  Figure E-2 Alarm management
  
• FusionSolar app

  Log in to the FusionSolar app, choose O&M > Device Alarm, and tap DC arc fault. On the Alarm Details screen that is displayed, tap CLEAR.

  Figure E-3 Alarm details
  
• FusionSolar Smart PV Management System

  Log in to https://intl.fusionsolar.huawei.com, choose Intelligent O&M > Alarm Management, select DC arc fault, and click Clear.

  Figure E-4 Device alarm