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Javier Moran avatar image
Javier Moran asked

Mutiplus VE.Bus FW 4.86

Dear community, good afternoon


Just did FW update for my Multi from 4.56 to 4.86 (latest).

Now my Multi is rejecting AC input 1. It sees the voltage but won´t do anything.

Looking into the changelog for V4.56 says:

"Bug fix. Some models exhibit occasionally rejection of the grid"

I would like to make a roll back. but can´t find older FW in the proffesional site.

Has anyone experienced this?


Thanks for your support.

Best regards,

MultiPlus Quattro Inverter Chargerfirmware updatemultiplus ve.busVE.Bus
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Paul B avatar image Paul B commented ·

we would need the FULL FW number before we could help ie 26??486

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Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

After a FW update all settings are reset to default, so you may have to check that first.

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Javier Moran avatar image Javier Moran commented ·
Dear Matthias, good morning


Thanks for your reply.

All settings checked, Multi is configured as it was before the FW update.

What other settings may cause grid rejection?.

Thanks for your support.

Best regards,



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