Hello,
I hope someone can help / point me into the correct direction.
This is a ESS system which is running in the UK.
Grid code is set to G99
ESS Assistant installed on both units
This morning I noticed that the multiplus’s were discharging at around 4400w, even though the load exceeded this and it was pulling a considerable amount from the grid on top, around 2000w.
The two multipluses should be able to provide the power no problem and have till this point.
I have tried restarting everything, however this didnt change anything.
Multiplus’s are running version V552 - Master Unit HQ23156EGX3, Parallel Unit HQ2207HVRTM.
I have 2x Seplos mason batteries proving 28.8kW of storage.
You gone through your Nodes? and have you got a switch on the node so that you can return the multiplus to normal and then disable them and go from there?
Hi! It sounds like there may be a configuration issue or a fault with the multiplus units. Check the settings for load sharing and ensure that both units are properly communicating; consider reaching out to the manufacturer for further diagnostics if the problem persists.
So the grid is being monitored by a ET112 and the solar is being monitored by Modbus. The DC solar is just charge controllers directly connected with ve direct cables.
Small update - I shortened the USB for the ET112 to 20cm just to make sure this wasn’t the issue. No difference.
I tried downgrading the code on the cerbo to v3.32
The other thing that I have noticed it seems to behave like this when exporting too. So when there is plenty of sun it’s charging the battery but also dumping about 10% to the grid.
I have narrowed the issue down. This excessive grid use is only apparent when I have ACOut1 connected. Removing this connection on both inverters sorts the issue out completely.
Now I am stumped, any ideas?
