Nenad

Thanks. I will try this too.

Thanks, I will check capacitors.

Thanks Coulomb for the suggestions, I will check some of these examples of yours. I will also try some more testing during operation, with an oscilloscope to measure the voltage, I need to determine the measuring points where to measure, and I would like to measure the voltage from the battery rectifier and the voltage from the PV rectifier. Also to measure the power to the display when the battery is charging, because that's when this problem with the display happens. (to find the measuring point where the supply voltage for the display is) maybe some additional schematic drawing. Mr.Coulomb do you have suggestion on which point to measuring voltage?

Hello to everyone, I have a small problem with my inverter. Actually at beginning when I first time connected my inverter with solar panels and battery it worked, and then I plugin load 2kW (electrical saw) and inverter broken on start(several IGBT broken, charging block, also IGBT on PV input, some resistors and etc. ) I checked everything and replaced all broken components. After repaired I switched on inverter and it is working, (connection with PV and battery only). Charging battery from PV it is working, actually all functionality are working. Problem is only when inverter charging battery from PV input, in that moment value and signs on display switching on/off without control or correct state, and also some signs are on/off what is not possible (for example sign for AC input is on/off blinking but I did not connect AC input) also numbers on display is not possible to read. Led diodes under display are working properly. Backlight of display working ok. When charging current of battery is lower under let's say 5A display working normal and I can read or change parameters. During charging I check current on battery (with external measuring) it is ok what I set on inverter. When I connected some load on output, for example 2kW, I don't remember that I saw this problem on display like during charging.(If invertor using power from PV or battery to provide power on output, display working correct). Does anyone has idea or has experience with the same or similar problem, what to do, or what to check on my invertor to fix that problem. thank you

Hello everyone, I have a small problem with my inverter. Actually at beginning when I first time connected my inverter with solar panels and battery it worked, and then I plugin load 2kW (electrical saw) and inverter broken on start(several IGBT broken, charging block, also IGBT on PV input, some resistors and etc. ) I checked everything and replaced all broken components. After repaired I switched on inverter and it is working, (connection with PV and battery only). Charging battery from PV it is working, actually all functionality are working. Problem is only when inverter charging battery from PV input, in that moment value and signs on display switching on/off without control or correct state, and also some signs are on/off what is not possible (for example sign for AC input is on/off blinking but I did not connect AC input) also numbers on display is not possible to read. Led diodes under display are working properly. Backlight of display working ok. When charging current of battery is lower under let's say 5A display working normal and I can read or change parameters. During charging I check current on battery (with external measuring) it is ok what I set on inverter. When I connected some load on output, for example 2kW, I don't remember that I saw this problem on display like during charging.(If invertor using power from PV or battery to provide power on output, display working correct). Does anyone has idea or has experience with the same or similar problem, what to do, or what to check on my invertor to fix that problem. Thank you.