Peter Sam

The 7.2KW I used was purchased from a regular channel. My device once appeared F90. I tried to update this firmware, and now the inverter starts to work. Does this mean the problem has been solved?😀

Yes, as you said, there are sales in Korea, but there are very few sellers, so the service attitude is not good. That's why the difficulty has been delayed, so I've come here. I am very happy to meet many experienced and enthusiastic friends. @Coulomb THX, I have installed it and it is working fine. If I encounter the kind of problems you reminded me in the future, I will contact the seller in time, and I will also report my equipment here at any time. May God continue to bless your work.

Today I tried upgrading the 7.2KW with the 90.19 firmware you provided and it doesn't report an error now. Thank you God for arranging all this and allowing me to solve a problem that has puzzled me for a long time here. Thank you for your patience and enthusiasm. I'll have it installed tomorrow and try to get it working, hopefully the good news continues. Greetings from Korea. @Coulomb @Georg594 @Steve87

Sorry for the late reply to your message. Thanks for your help, I'll try to fix it as you suggested, and I'll report back on the bug fix, thanks anyway. @Coulomb @Steve87 @Georg594

Thank you very very much for the firmware you provided, @Georg594 may I know the version number of this firmware.

Thank you for your reply, thanks, @Steve87 thanks, the original problem is F90. I'm really sad, I didn't make any settings, the inverter suddenly prompts an error, the screen shows F90 and there is a harsh beep, I try to update the firmware sent by the seller, but the problem remains.

Axpert Max 7.2kW tips F90, U1 (45.06), U2 (12.03）, U3 (8888). The merchant suggested me to update the firmware, I tried to update U1 and U2, but it still shows F90. What should I do? I really need your help! Sincerely thank you! @Coulomb I really admire that you understand a lot about inverters, maybe you can help me.