password
Access to advanced configuration requires authentication
Accessing advanced settings on Power-One, ABB, or Fimer Aurora inverters necessitates entering specific passwords. These passwords vary depending on the inverter model and the configuration method (via the inverter's front panel or through the Aurora Manager LITE software).
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- View current power output and energy statistics
- Access daily/monthly/yearly production logs
- Check alarm and warning logs
- Set inverter time and date
- Set basic communication parameters (e.g., RS485 address)
For most inverter models, the default user-level password is 0000. This allows access to basic settings.
To access advanced settings, a service-level password is required. This password is often unique to each inverter and may be derived from the inverter's serial number or obtained from the manufacturer.
When using the Aurora Manager LITE software, advanced configuration (INSTALLER level) access requires registration on the Fimer website. Upon registration, you'll receive credentials to unlock these settings.
| Access Level | Password | Available Settings |
|---|---|---|
| User | 0000 (default) |
Tips for Qualified Persons
The following procedures involve safety risks and potential for equipment damage. They are intended only for qualified personnel trained to identify and avoid the hazards that exist, and possess the appropriate PPE. These are general tips to aid professionals in troubleshooting, not instructions or directives to perform them.
We assume no liability for injury or damage resulting from their use.
- Configure grid settings (voltage/frequency windows)
- Set reactive power behavior (cos φ, Q(U))
- Remote shutdown configuration
- Set country code for grid compliance
- Enable/disable MPPT tracking on each input
- Adjust DC input string configuration
- Restore default system parameters
- EEPROM parameter access
- Internal relay and contactor configuration
- View internal diagnostic and sensor data
- Upload firmware / enter service mode
- Adjust protection and safety thresholds
- Manual calibration routines (voltage/current)
- Test or override RTC battery
To obtain the service-level password for specific inverter models (e.g., PVI-3.0/3.6/3.8/4.2, PVI-5000/6000, UNO-7.6/8.6), contact ABB/Fimer technical support. You'll need to provide the inverter's model number, serial number, and manufacturing week code. The service password provided is typically valid for 14 days.
For certain inverter models, the service password can be calculated using an algorithm based on the last six digits of the inverter's serial number. This method involves alternating addition and subtraction with a base number. Detailed instructions and examples are available in the inverter's technical documentation.
When using Aurora Manager LITE, after registering on the Fimer website, enter your credentials in the software to gain INSTALLER level access. This grants the ability to modify advanced parameters, update firmware, and perform other critical configurations.
| Access Level | Password | Available Settings |
|---|---|---|
| Installer | Registered or calculated password | |
| Service | Manufacturer-issued password (time-limited) |
Aurora inverters originaly came standard with a 5-year warranty. The production date is indicated on the inverter label using a "WK" code, which represents the week and year of manufacture (e.g., "4213" means the 42nd week of 2013). While nearly all units are now beyond their original warranty period, FIMER offered warranty extensions up to a maximum of 10 years, provided they were purchased within 12 months of installation.
You can check your product's warranty status using FIMER’s ONLINE TOOL. You will need the inverter's serial number. In some cases, it may still be possible to purchase or confirm extended warranty coverage through FIMER’s support channels.
It started with Power-One: The Aurora inverter line was developed by Power-One, which quickly became the second-largest solar inverter manufacturer in the world by the early 2010s. Much of this success was due to Power-One’s role in bringing dual MPPT (Maximum Power Point Tracking) inverters to the residential and commercial market. At a time when most competitors offered only single-input trackers, Power-One’s dual-MPPT design allowed more flexible system layouts, making Aurora inverters especially popular with installers working on multiple roof planes or partial-shade rooftops.
Acquired by ABB: In 2013, ABB, a global electrification and automation company, acquired Power-One to expand its presence in the solar inverter market. After the acquisition, ABB rebranded the inverters under its own name and gradually phased out the Power-One and Aurora branding. While ABB continued supporting the product line, some inherited reliability issues, such as the well-known E031 relay fault, began impacting ABB's reputation in the solar market.
Acquired by FIMER: In 2019, ABB announced its exit from the solar inverter business and sold the entire division to FIMER, an Italian manufacturer with a long-standing focus on inverter and EV charging technologies. FIMER assumed responsibility for all Aurora-series inverters in early 2020, including warranty support and ongoing service. Despite securing €45 million in 2022 to support an industrial relaunch, FIMER continued to struggle financially and operationally, failing to fully recover from prior setbacks including supply chain issues and internal disruptions. The restructuring process was prolonged, and by late 2023 into 2024, FIMER entered formal extraordinary administration in Italy due to insolvency risks.
Today: In January 2025, FIMER was officially acquired by MA Solar Italy, a subsidiary of McLaren Applied Group, with backing from Greybull Capital. This acquisition, approved by Italy's Ministry of Enterprises and Made in Italy (MIMIT), concluded FIMER's restructuring process and infused over €50 million in new investment, enabling the company to regain financial stability and refocus on growth. McLaren Applied's advanced engineering expertise, particularly in electrification and control systems, is expected to synergize with FIMER’s inverter technologies, fostering innovation and expansion into sectors beyond photovoltaics. The acquisition also ensures the continuity of FIMER's operations and workforce, including its manufacturing sites in Italy and India.
The best point of contact for warranty or service issues is your original installer.
If your installer is no longer available, you can locate an authorized FIMER Service Partner:
Service Partner Lookup Tool.
You may also contact FIMER directly through their online support form, or by phone at:
1-877-261-1374 or 1-855-718-5872.
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