: If prompted for a default login, the initial password for roles like "Advanced User" or "Special User" is often 00000a or 000001 .

the AC switch and the DC switch at the bottom of the inverter. Wait for all LED lights to go out.

until all LED indicators on the inverter are completely off.

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– The password is now reset, but this is only a temporary state. You have 10 minutes to complete the password change. If no action is taken within this window, all parameters of the inverter remain unchanged (i.e. the password returns to whatever it was before the reset).

This article is for informational purposes only. Always refer to the official Huawei user manuals for your specific inverter model before performing any maintenance or reset procedures.

: On your smartphone, completely turn off your mobile data and any active automated VPN applications. The FusionSolar app relies on a local point-to-point Wi-Fi connection; cellular interference frequently interrupts local device commissioning.

Because these smart inverters do not feature a physical reset button for security reasons, resetting the device requires direct physical access to the electrical breakers and the Huawei FusionSolar App

: Ensure the inverter is operating normally for at least 3 minutes.

: On models with multiple LED indicators, you may see three green LEDs blink quickly, followed by three red LEDs blinking quickly, which confirms the password has been restored to its default.

I can provide more specialized steps if this procedure doesn't work. Share public link

: If your system includes a Huawei LUNA2000 smart string battery, locate its independent DC switch and turn it off before handling the main inverter controls.