How to activate AFCI Function

Modified on Thu, 08 Feb 2024 at 09:02 AM

AFCI function

Solis inverters have the built-in function which can detect the arc fault on the DC circuit and shut down the inverter to prevent fire disasters.

Enabling the AFCI function

The AFCI function can be activated on the inverter’s display as follows.

Menu Path: 

Advanced Settings -> Password: 0010 ->Special Settings -> AFCI Set ->AFCI ON/OFF -> ON



The "AFCI level" setting is ONLY permitted for technicians. Don't change the Sensitivity value, as this may cause frequent false alarms or malfunctions. The manufacturer is not responsible for any further damage caused by unauthorized changes have been made.



If you find that the user interface of your inverter differs from the information above, please contact a service engineer or technical support.



The setting also corresponds to the current status, which can be used to check the ON/OFF status of the AFCI function.


If a DC arc is detected during normal operation, the inverter will shut down and issue the following alarm: ARC-FAULT


The installer must thoroughly check the DC circuit to ensure that all cables are correct are attached.


Once the DC circuit problem is resolved or confirmed to be OK, press "ESC" for 3s and wait for the inverter to restart.

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