Underperformance due to radio issue
I had a SigEnergy SigenStor + panels installed ~ 2 months ago. When it works it’s great, but there’s a radio transmitter (Sigen Sensor) connecting the inverter to the consumer unit that drops out for hours at a time, rendering the entire system useless when it’s offline. When there’s no signal, the inverter can’t export anything. If the battery is full, all the solar is clipped. Meanwhile I’m drawing from the grid in full sun with a full battery. Installer has been poor with aftercare so I’m turning to Reddit for some advice. Everything inside the diagnostics says it’s healthy, so I’ve had to diagnose the problem myself.
If I understand the app screenshots correctly, all the times the load consumed is 0 matches all the times the Sigen Sensor is offline. It’s a little black antenna and if I move it around it comes back online but inevitably goes out again. I can confirm thru my Octopus mini that my house load is definitely drawing from the grid when the inverter is reporting no load.
I use Home Assistant so I’m familiar with Modbus. I think a hard wire connection makes the most sense but there’s no direct path between them. I have Ethernet networking at both ends - is there such a thing a sensor that can piggyback on my home network like Modbus to TCP? Is this a DIY job or do I need to find an electrician who is familiar with this kind of repair? I don’t think there’s anything wrong with the inverter, panels, or battery - just the signal to sense the house load.
Last, what if any recourse do I have with the (MCS certified) installer if they’ve set up a system that doesn’t provide electricity to my house even in direct sunlight unless I go jiggle the antenna every couple hours and constantly monitor the app?