A: No. The password reset procedure does not change any of your inverter's operational parameters or production data. It only resets the access credentials. All other settings remain unchanged.
After the reset, use the FusionSolar App to connect to the inverter's local WiFi and log in using the initial credentials: : 00000a Common User Password : 000001
: Connect your phone to the inverter’s built-in WLAN hotspot (SSID and initial password are on the side label). huawei+sun2000+reset+installer+password+work
: Enter the code in the app to set a new installer password. Quick Reference for Defaults Initial Installer Password : 00000a Initial WLAN Password : Changeme Common/Advanced User Password : 000001
The most reliable and widely documented way to reset the installer password on a Huawei SUN2000 inverter is a power‑cycle procedure that forces the system to revert to its factory‑default state for a limited time. This method works on the majority of models, including the SUN2000‑(20KTL‑M3, 33KTL‑NH, 40KTL‑NH) series and many others. It is a hardware‑based reset that does not require any specialised tools or a working password. All other settings remain unchanged
: Turn off the AC switch, then set the DC switch at the bottom of the inverter to OFF . If a battery is connected, turn off the battery switch as well.
: Turn the AC and DC switches to OFF again. Wait until all LED indicators are off. Quick Reference for Defaults Initial Installer Password :
Select your specific SUN2000 inverter model from the discovered hardware list. Select as the primary user type. 3. Apply Default Credentials & Create a New Password Resetting Password - SUN2000-(2KTL-6KTL)-L1 User Manual
Huawei can generate a one-time “super installer” password that expires in 24 hours, but this requires an active support contract.
After the physical reset, the inverter broadcasts its initial WLAN hotspot. Use the Huawei User Manual