Based on the search terms provided, here is the relevant information regarding resetting the Installer (Service) Password on a Huawei SUN2000 inverter.
Why Reset the Installer Password on Huawei SUN2000? huawei+sun2000+reset+installer+password+work
John tried using the default passwords listed in the manual, but none of them worked. He then attempted to use a password recovery tool, but it didn't recognize the inverter's firmware version. As the hours ticked by, John's frustration grew. He knew he needed to find a solution before the homeowner's electricity bill skyrocketed. Based on the search terms provided, here is
Step 5: Remove Jumper & Reboot Remove the jumper wire. Turn the AC breaker OFF. Wait 30 seconds. Turn AC breaker back ON. Authentication layers (installer vs
Crucial Warning: Attempting random passwords too many times will lock the login interface for 15–60 minutes.
: Wait for the inverter to enter the reset state. The indicators will blink to show the reset was successful.