Hi, I have a three phase system with 3 Multiplus II 5kVA with 6 Pylontech US5000 and a RS450/200 PV MPPT. The system was installed in May and was running without an problem since a month ago. At this time one of the pylontech batteries had an alarm and couldn't be brought it back to live, the bms always had an alarm. I isolated the battery and send it back to my dealer. After some weeks the one of the three Multiplus II had the following error: VE.Bus Error: VE.Bus Error 11: Relay test fault
I tried to find the failure found some advice at:
Always when I switch on grid power all the Multiplus II makes the clicking noise from the relays as normal, but than the inverter at phase L3 shows an error (different blinking leds). By checking the Cerbo, I found out
out what failure it is.
Now to my question, is there anything else what I can do, beside contacting my dealer?
Thanks for every hint.