dovpear

Today the mosfets arrived, it was worth waiting 7 days. I didn't install the fuses on the PV side, I don't know why they blew up so I'll let it go for now. Tomorrow I will test when the sun shines, 230V works again and the error disappeared, nothing but mosfets was damaged. Resistors and control are all working.

I did some digging and found 2 shorted transistors. Because error 09 does not occur by itself if the elements that exploded are only PV protections. Any suggestions on what else might need to be replaced besides these two?

The gas arrestor just evaporated. It was falling to pieces before I could desolder the pins.This MOV is also so burnt that you can't see the markings Only the thermal fuse is legible and I will replace it. It's interesting that only these elements exploded since the weather was nice and there was definitely no lightning 👀 Thank you for your help anyway, I'll probably buy another one if I can't fix it. This time maybe from a more decent company with normal software 💀

Hello, I have such an inverter. Probably Axpert vm III 3kW. I only use it as an offgrid with 9 panels. I don't know exactly what time it was, but when I came back there was error 51 on the screen, so I turned off the inverter and after restarting it was 09. I took it apart and found 3 elements, one of which looked like a diode and had completely evaporated If anyone has photos or numbers of these elements, I would be grateful for help. I didn't record any short circuits, so maybe it's just the fault of too strong sunlight and unchanged current setting because the firmware is from a similar 4kW model and solar charging was at 60A for the battery which I forgot to change and when the sun came out today, it could have happened.