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Multiplus 3000 not charging battery bank on shore power?


23f56cf5-bb7e-41bc-9dd7-c949eb74777d.jpegHello all, looking for some guidance with my multiplus 3000 inverters.

Inverters are currently installed split phase in a solar power system. Since I’ve installed them, I have not been able to get the inverters to charge the battery bank when on shore power. I’ve got good voltage at the inverter, (see picture attached) the VE configure application shows 62 Hz, and 122 V AC.

I’ve tried putting the shore power to the master inverter only, the slave inverter only, and both inverters simultaneously, and to this point I have no luck getting them to charge the batteries. I have also switched both units to “charge only” mode, which was also unsuccessful.

Any tips or pointers are much appreciated!

MultiPlus Quattro Inverter Charger
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Kevin Windrem avatar image Kevin Windrem commented ·
Is your shore power split phase?

Is it 180 degrees apart or two legs of 3-phase power? The latter can be used if you set that phase in VE.Bus System Config or select floating phase.

You can not feed the same single-phase source to the AC inputs of both Multis even with floating phase selected.

You can feed a single phase 120 volt source to one of the Multis by switching of "switch as a group".

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