尼日利亚采购需求：磷酸铁锂电池、锂电池制造商、锂电池源工厂、太阳能系统、太阳能电池批发、可再生能源

I've encountered an issue with my inverter - it doesn't seem to charge or show any display until I manually switch it on. I was under the impression that the unit should start charging automatically as soon as both the solar and grid connections are made, even if the power button is off. This has left me wondering if there's a potential fault with the device or if I'm misunderstanding how it's supposed to function. Could you provide some insights into this? Is there a specific setup procedure I should be following, or is this behavior typical for this type of inverter? Any detailed information would be greatly appreciated, as I need to ensure everything is working correctly for my solar installation. Thanks in advance for your assistance!