Huawei+sun2000+reset+installer+password+work ◉ <RELIABLE>

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

If the physical jumper method scares you, owners of older SUN2000 models (with the 4G/3G dongle) use the SD Card method.

Note: On newer firmware (V200R001C00SPC100+), this method is disabled for security.

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+sun2000+reset+installer+password+work

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).

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." Huawei has changed the process over time

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. Note: On newer firmware (V200R001C00SPC100+), this method is

If your inverter is connected to the internet via a SmartLogger or 4G dongle, Huawei’s cloud may override the local password.

Once you reset the installer password, the inverter is "Naked." It has lost its grid parameters. If you reconnect it to the grid without setting the country code, it will not export power (or worse, trip breakers).