Outback Power PV Rapid Shutdown Integrated Combiner Solution With AFCI The Outback Power RSI remote shutdown initiator has one main disconnect switch and three indicator lights. When the switch knob is turned to the "Solar Off" position, the system disconnects the relay-trip circuit breakers. The three status lights indicate "Solar On", "Solar Off", and "AFCI". The AFCI light turns on when the RSI receives an arc fault signal from the FWPV6-FH600-SDA combiner box.