Hi a customer has the following system
fronius primo connected on grid side of multi
dc coupled mppt connected with ve.direct
meter is ET112 connected to ccgx via usb rs485 cable.
all connected on VRM with remote access available
since the start of the year the calculations and energy flow have been wrong, at first I went to site expecting the customer to be using more electricity, but when I turned off all the circuit breakers apart from the energy system the ac load value should have been zero but instead showed around the same value as the solar production.
The multiplus was also making some strange sounds.
i have tried updating firmwares on ccgx, fronius, multiplus
see attached screen shots
any help would be greatly appreciated