SMA arc fault troubleshoot. Make sure to turn the system off AND wait for the capacitors to drain. Don’t forget the system is still hot! Open inverter and roof boxes and check all the connections. Common causes include, wires striped back too far or not enough. Terminal blocks not torqued down enough. PV connectors not connected all the way. PV connectors crimped wrong. Damage to wires. Internal Inverter failures.
1:23
SMA arc fault troubleshoot. Make sure to turn the system off AND wait for the capacitors to drain. Don’t forget the system is still hot! Open inverter and roof boxes and check all the connections. Common causes include, wires striped back too far or not enough. Terminal blocks not torqued down enough. PV connectors not connected all the way. PV connectors crimped wrong. Damage to wires. Internal Inverter failures.
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