The ET340 has been in my system for several months now. The last few weeks I see that data from this meter is regularly missing in VRM. When I look at the Cerbo I don't see any data on the USB-rs485 connector. No flashing LEDs to indicate that data is coming in. If I take the usb-rs485 out of the cerbo and plug it in again, it doesn't solve the problem. If I leave the system alone, sometimes it suddenly works again. It is now the case that the ET340 no longer gives any data at all. ET340 appears to be in a fault state with 2 steady orange LEDs on the front. I cannot reset the ET340. If I disconnect the blue neutral wire with fuse, this has no effect on the meter. the 2 orange leds remain lit. What could be the cause of this? I would like to return the meter as defective, but then I have to be convinced that the error is not in my system.
