: Tap the blue "Scan" button. Then, scan the QR code located on the sticker on the side of the inverter.
This method is used when you cannot log in to the system at all. It requires physical access to the inverter's AC and DC switches.
Connect to the inverter's WLAN using the credentials on the unit label. Device Commissioning in the app and log in as Follow the prompts to define a new password. 4. Troubleshooting and Tips Verification:
Only if you have lost all access (installer and owner passwords) and the definitive reset procedure fails.
[Normal Run > 3 Mins] ──> [Power OFF #1] ──> [LEDs Die] ──> [Power ON #1 (Wait ~90s)] │ [LEDs Flash/Die in 30s] <── [Power ON #2] <── [LEDs Die] <── [Power OFF #2] Step 1: Execute the First Power-Off huawei+sun2000+reset+installer+password+work
: Wait until all LED indicators on the inverter panel are completely off.
: Huawei strongly recommends changing the initial password immediately after login and updating it periodically. A password left unchanged for a long period may be stolen or cracked, which could lead to unauthorised access and potential losses for your PV plant.
After five consecutive failed password attempts, the account will be locked for 10 minutes. If this happens, wait out the lockout period and then try the hardware reset method described above.
Some users have reported success by cycling the AC and DC power switches three times in coordination with the specific light flashes on the inverter. This method essentially resets the installer password without requiring the complex timing of the official procedure. : Tap the blue "Scan" button
This phase requires exact timing. You must execute the entire sequence of turning the switches off and on within a strict .
Without the installer password, your access to the inverter is limited to basic monitoring functions. If you need to make any configuration changes, resetting the installer password becomes essential.
This exact timing sequence triggers an internal hardware interrupt on the inverter's control board, forcing it to reset local login parameters back to factory defaults without erasing your historical solar production data.
The indicators should be steady green or blinking slowly for before beginning the reset. It requires physical access to the inverter's AC
: Run this physical power reset early in the morning or late at night when solar irradiance is lowest. Sudden, heavy power cuts under full solar load put unnecessary stress on internal DC relays.
The inverter must have been powered on and operating normally for at least 3 minutes before you begin the first step.
Losing the installer password for a Huawei SUN2000 solar inverter can be frustrating, but it is not a dead end. The hardware‑based power‑cycle reset is a proven, reliable method that restores factory‑default access temporarily and allows you to set a new password. For supported models, app‑based recovery provides an even more convenient alternative.
: Turn the AC and DC switches to OFF again. Wait until all LED indicators are off.