In this case, it is best to contact Growatt directly through Growatt's installer portal
If you are having problems with your Growatt inverter, your best bet is to contact Growatt through the Growatt installer portal and request help from the manufacturer itself.The Growatt installer portal is an online platform designed specifically for installers of Growatt inverters. It is a tool that installers can use to make their work more efficient and effective. The portal provides access to technical information, such as manuals, data sheets and firmware updates, that installers can use when installing, commissioning and maintaining Growatt inverters. This is especially useful because it allows an installer to quickly and easily access all relevant technical information about the inverter.