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: Turn on the DC switch and wait until the LED indicators blink. Then, turn off the DC switch.

For specific model manuals, you can visit the Huawei Support Portal for the SUN2000-L1 or SUN2000-M2 series. Resetting Password - SUN2000-(8KTL-20KTL)-M2 User Manual

: Turn the AC and DC switches to OFF again. Wait until all LED indicators are off. huawei+sun2000+reset+installer+password+work

Huawei introduced a security patch in late 2024 (Firmware V100R001C20SPC110 and above) that disables the physical jumper reset for "Installer" level access.

Once the physical reset is complete, you have a to set the new password in the FusionSolar App . Resetting Password - SUN2000-(2KTL-6KTL)-L1 User Manual : Turn on the DC switch and wait

Are you having trouble during this process, or is the app not recognizing the default password?

Turn off the DC switch (if your model has one) and the AC backup switch. Wait 5 minutes for capacitors to discharge. Once the physical reset is complete, you have

Before touching any switches, ensure your site conditions match Huawei’s structural baseline requirements. Skipping these basics will cause the sequence to fail.

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

If the inverter is bound to a FusionSolar enterprise account (not a personal one), resetting the password locally might not work because the SUN2000 expects an App "Handshake."

due to persistent credential mismatches. Prerequisites: What You Need Before Starting