Hi I have problems with 3 phase instalation with 3 x multiplus II 3000 VA.
On off grid mode everything works fine but when mains is on cause error 11.
Below more details please help to indificate what cause a problem:
asked
Grid relay error - everything checked and still cause problem
Did this work fine before or is this a new installation and it has done this from the start?
These are the documented recommendations:
Other shown error details, listed below, are not related to any known installation issue and can be caused by a faulty unit or configuration issue. In any case, also when one of below errors shows, make sure to go through all the above steps for any error 11 issue.
Failing steps #2-7.
Communication error.
UMains mismatch.
Period Time mismatch.
Drive of BF relay mismatch.
But How Can i fix it ?
PV inverter works fine on this grid on EN505
So multiplus is broken ?
Follow the steps for troubleshooting in the manual. To determine if your wiring has an issue or not.
The PV inverter working is not a good indicator. Also answering whether this is a new install or not as @nickdb asked would help?
