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I'm new to the forum and not sure I'm in the right spot ? Background first.... I'm running a LVX6048WP in my RV, 6-500 watt panels(3000 watts) , 48 volt 400 ah lifep04 battery bank with a JBD BMS, everything works fine until I plug into utility. When plugged into 50 amp plug, I get the flashing...

My Inverter stopped making AC ! Can only pass through Grid power and charge the batteries from pv or Grid but wont make AC on its own ! Anyone else have this problem ?