Great tutorial, following error 09 I followed it and managed to restart my inverter. However, a problem remains, the power of the solar panels goes well to charge the battery (1KW) but when I connect the load, the solar power fluctuates and does not exceed 150W. I identified a bad transistor (WLTB DGG) but I don't know how to change it. Please could you help me. THANKS
Thanks for sharing the knowledge. Actually I have a question, should I replace the IGBTs if they seem to be normal when I test them using a multimeter? Because I have an inverter showing the same error yet all the IGBTs seem to be normal when I test them using a multimeter