Huawei+sun2000+reset+installer+password+work

Huawei has changed the process over time. Below are the three working methods as of 2024-2026.

This method forces the inverter to reload a configuration file with known credentials.

  "installer_password": "YourNewPass123",
  "reset_flag": 1

Note: Some firmwares require a digitally signed file. If this fails, you need FusionSolar installer-level support or a direct RPC reset via the SmartLogger maintenance port (requires Huawei proprietary cable). huawei+sun2000+reset+installer+password+work

Ensure your phone/PC is connected to the inverter's built-in Wi-Fi (SSID: SUN2000-xxxxxx). Open a browser and go to 192.168.200.1 or 192.168.8.1.

Safety First: Turn off the DC switch (if your model has one) and the AC backup switch. Wait 5 minutes for capacitors to discharge. Huawei has changed the process over time

Step 1: Locate the COM Port Remove the four screws on the bottom cover of the SUN2000 (where the cables enter). Look for the COM port – usually a 3-pin or 5-pin green terminal block labeled COM, RS485, or Meter.

Step 2: Identify the Reset Pins You are looking for pins labeled PIN 3 (Set) and PIN 8 (GND) on the 8-pin terminal, or simply Pin 4 and Pin 5 on a 5-pin terminal (check your specific manual). "installer_password": "YourNewPass123", "reset_flag": 1

Step 3: Jumper the Contacts With the inverter still powered OFF (AC side), insert your jumper wire into the SET pin and the GND pin. Now, turn the AC breaker back ON. The inverter will power up but remain in "Standby" or "Initializing."

Step 4: The Magic Window (15 Seconds) Keep the jumper in place for exactly 15 to 20 seconds. Do not remove it early.

Step 5: Remove Jumper & Reboot Remove the jumper wire. Turn the AC breaker OFF. Wait 30 seconds. Turn AC breaker back ON.

The Result: The SUN2000 has now hard reset to factory defaults.