Randhesh

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Hi Coulomb, what you advised above is exactly what was happening, as i have made those changes and for couple of days now i left as SUB and it did not cut off. Really appreciate the assistance. Regards, Randhesh

Hi Guys, I have the Mecer 5.6kw 6Kwmppt 48V High voltage inverter(Sol-I-Ax-5M4. Issue: when using SUB during the day all works fine however when the sun sets and the PV stops working the inverter cuts off and switches everything off and restarts the inverter, if i leave it in SUB it does it couple of times again until i change to SBU and all is fine and i revert to SUB in the morning again. Any insight what the issue could be? Panel setup: i have 6*330watts on one string & another 6*440watts on another string Battery spec: 2* Mecer M3000 Battery Settings are below: Battery Type User Battery Cut-off Voltage 46 Bulk Charging Voltage 55.0 Float Charging Voltage 54 Max Charging Current 40.0A Max. AC Charging Current 30.0A Charging Source Solar first Battery Equalization Disabled Real-Time Activate Battery Cancel Battery Equalization Time out 10 Battery Equalization Time 5 Equalization Period 30 Equalization Voltage 58 Back to Grid Voltage 48 Back To Discharge Voltage 54.0V Output setting Output Source Priority SBU (this is change in the morning to SUB) AC Input Range Appliance Outout Voltage 230.0 V Output Frequency 50.0 Hz AC Output Mode Single output

You have the same units as me, the cable to be used is: AXPERT-KING