Hello all,
I am working to convert a stable and working off-grid installation to an on-grid system. It has been performing flawlessly so far as a stand alone system but is currently showing an ESS fault. The conversion process has involved fitting a grid meter at the origin of the house grid, and that can be seen on the Cerbo and it is reporting well. The other job was to provide power to the AC-In via a 32A RCBO. The installation itself is in an adjacent garage so goes through 3 consumer units all in all to get there (main house>extension>garage) and I wonder if this is a contributing factor.
Components:
SmartSolar 250|100 MPPT
BlueSolar 250|100 MPPT
MPPT RS 450|200
CerboGX
MultiPlus II GX 5000
Pylontech US5000 x 3 (more to come)
Everything has up to date firmware and has been working very well supplying part of the house from the AC out. It has been this way for several months while the home owner gets used to the system and so that we can get an idea of habits and usage.
Now the time has come to integrate the rest of the house as a whole. The AC-out has become redundant with the AC-in becoming a two way supply and feed. The ESS assistant has been installed but now the Multiplus is showing that it is in an ESS fault condition. The MPPTs are still charging the batteries but nothing is being inverted back to the house. A grid lost error has been reported but I can measure voltage directly (and see in the device section of the display) that there is 238V at AC-in. The Multiplus-II on the Display shows three blinking LEDs - does anyone know what they mean?
The ESS assistant did mention that the gridcodes belonged to a different firmware version but I’m not sure how to resolve that.
The batteries were set up using the handy pylontech/Victron guide. Likewise the ESS design documentation was followed, but I’m at a loss now. The ESS assistant has now been removed and doing this has previously allowed the Multiplus to invert once again, but this time the fault has persisted.
Are there any other parameters or numbers that I can look at to help narrow things down a bit? Or any screenshots that I can provide in return for some sage advice?
Can anyone please offer a solution?
Any help will be greatly appreciated.