Sunny Boy User Manual
6 Troubleshooting
SMA Solar Technology AG
User ManualSBxx-US-1XP-41-BA-en-1148
6 Troubleshooting
6.1 Forgotten Password
If you have forgotten the password for the inverter, you can unlock the inverter with a Personal
Unlocking Key (PUK). For each inverter, there is one PUK for each user group (User and Installer).
Tipp: With PV systems that are registered in a communication product, you can also assign a new
password for the user group Installer via the communication product. The password for the user
group Installer is the same as the system password in the communication product.
Procedure:
1. Request PUK (application form available at www.SMA-Solar.com).
2. Open the user interface (see Section4.2, page24).
3. Enter the PUK instead of the password into the field Password.
4. Select Login.
5. Call up the menu Device Parameters.
6. Click on [Edit parameters].
7. In the parameter group User Rights > Access Control change the password of the desired
user group.
8. Select [Save all] to save the changes.
Password assignment for inverters that are registered in a communication
product
The password for the user group Installer is also the system password for the system in the
communication product. Changing the password of the user group Installer can lead to the
inverter no longer being able to be reached by the communication product.
• In the communication product, assign the changed password of the user group Installer
as the new system password (see the manual of the communication product).