akdri

Try downgrade the firmware Download V200R001C00SPC114 to official Huawei page, https://support.huawei.com/enterprise/en/digital-power/sun2000l-pid-22027611/software First register your inverter and login. When you download de firmware, use de mobile app to upload.

Firmware 117 port TCP 502 modbus is closed. Downgrade firmware 114. https://forum.huawei.com/enterprise/es/huawei/m/ViewThread.html?tid=806087&lang=es

Thanks for your response, GrKoR I have gone back to the previous version and now everything works correctly again. As I also have several esp12e I wanted to compile esp12e...