Gateway - Venus GX
VE Bus system - Quattro 48/8000/110-2x100 rev2
We had our system installed in July 2022 and have always had VE bus error.
Currently getting 80 a day on average.
When this happens we stop using solar or batteries and pull power from the grid directly, costing us money.
What is the reason for this and how can it be solved
We have spoken to our installers and they say its normal and nothing to worry about
If you are ‘always’ getting VE Bus errors, and some overload warnings on l1 (Do you have a multiphase system?)
First step: Completely shut down the system, and check ALL battery negative connections are tight and clean. Any significant voltage drop between an inverter B- terminal and the Cerbo ground can cause VE bus errors. If this voltage drop gets excessive it can cause irreversible damage.
Second: Check all VE bus cables, and replace any “installer made” cables with good quality shop made UTP cables. Any loose connections here can also cause problems.
A prior system that I consulted on, the installers left some slightly loose negative connections with similar results to that which you describe. Eventually the inverters had to be replaced.