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Hello, We got brand new LuxPower 12K hybrid inverter with 2 x GSL 14.34Kwh battery and 36x Jinko 465 Bifacial panels and running 3 strings from panels back to inverter. The PV input from panels sometimes works then randomly stops after a while. After inverter is restarted it picks up again and...

Hello, We are having trouble putting this inverter (GSL one) into off grid mode. It doesn't send any power back to main disconnect and breaker panel. Also we noticed sometimes it randomly stops receiveing input from PV modules. Does firmware need to be upgraded? Also how is firmware upgraded...