Verto & Verto Plus
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Frequently searched topics:
Basics
The Fronius Verto is our next-gen hybrid inverter for residential and commercial use.
It combines maximum efficiency, flexible system integration, and modern design with simple installation.
Fronius Verto Plus goes a step beyond the basic model to include battery operation and backup power functions, both of which can be activated directly through the system’s software.
Key features:
- Hybrid inverter designed for modular expansion
- Integrated communication module (LAN/WiFi)
- Compatible with Fronius Smart Meter, Solar.web, and Solar.SOS
- Optional surge protection device type 1+2
- Full Backup option for single-phase and three-phase systems (Verto Plus only)
Note: The Verto product line is manufactured in Europe and complies with the current EN 50549 standards as well as our Fronius “Made in Austria” quality standards.
Planning & installation
Planning
Fronius Solar.creator lets you plan your system down to the exact location, module type, and energy storage requirements. The tool offers automatic string sizing, shadow analysis, and energy storage integration.
Key factors for planning:
- Comes with integrated DC disconnector
- Option to retrofit a surge protection device (type 1+2)
- Compatible with BYD and Fronius Reserva energy storage devices
- System planning as per EN 50549 and ÖVE/ÖNORM
The Fronius Verto features an integrated surge protection device (SPD) as standard.
When ordering, you can choose between two options:
- SPD type 1 + 2 on the AC and DC side
- SPD type 2 on the AC and DC side
The Fronius Verto has four MPP trackers with two inputs each. Module strings of identical length can either be split between the two inputs of an MPP tracker or combined beforehand and connected to a single input.
The maximum usable input currents (Idc max MPPT and Idc max string) specified in the datasheet may be exceeded without violating the warranty conditions.
Note: The maximum short-circuit current of the module strings must not exceed the values specified in the data sheet for each MPP tracker(Isc pv, MPPT), string (Isc pv, string), and for the total short-circuit current (Isc pv, inverter), otherwise the device may be damaged.
If Idc max MPPT or Idc max string is exceeded, the inverter actively limits the current to the specified value. This can result in small yield losses.
Further information can be found in the associated whitepaper.
DC power optimizers adjust (increase or decrease) the voltage of overshadowed PV modules. But as shading increases, so does the optimizer’s self-consumption, ultimately reducing efficiency. Especially under partial shading, power optimizers often cannot fully offset yield losses and may not result in a higher overall energy yield.
Compatibility with power optimizers is not confirmed for the Verto inverter series.
The Fronius Arc Guard safety function monitors for DC arcs in photovoltaic systems and safely interrupts them to maintain system safety. It was developed to comply with the IEC 63027 standard and meets the technical requirements for arc fault protection equipment (AFPE) and arc fault circuit interruption (AFCI) in photovoltaic systems.
Verto inverters come as standard with integrated Fronius Arc Guard, which is disabled by default. If required, the function can be enabled on the user interface of the inverter using the same steps as for the Fronius Tauro.
System functions & integration
Fronius Solar.web
Fronius Solar.web is available in full as a desktop or app version for monitoring your Verto and Verto Plus inverters.
You can download the Solar.web app from your App Store and the Google Play Store on your smart device!
When using a firewall for outgoing connections, the corresponding protocols, server addresses, and ports must be enabled to ensure successful data transfer.
The complete list of connections to be enabled can be found here.
Fronius Verto und Verto Plus inverters must not be connected to one another or to existing Solar.net rings via the RJ45 ports.
The LAN1 connection is used exclusively for network integration. The LAN2 connection currently has no function.
If Verto or Verto Plus inverters are installed alongside other Fronius inverters in a system, the Verto devices must be connected to the Internet separately. All inverters can then be integrated into the same Solar.web system and displayed together.
Energy management & interfaces
The Fronius Verto and Verto Plus offer four digital outputs for intelligent load management. This allows for targeted control of loads such as heat pumps, heating elements, and pool pumps. Functionality is identical to the GEN24 inverters. Further information can be found in the whitepaper on energy management.
The Fronius Ohmpilot uses PV energy to heat water. Further information and instructions can be found on the Ohmpilot support page.
The Fronius Wattpilot is a PV charging solution for electric cars. Further information and instructions can be found on the Wattpilot support page.
In addition, the inverters have open interfaces for easy connection to a variety of third-party components, such as heat pumps or smart home systems.
The settings for the open interfaces can be found on the user interface of the inverter under Communication.
You can find the current list of compatible systems here.
Further information and instructions on the interfaces can be found on the Open interfaces page.
Compatible batteries
The Fronius Verto does not support battery operation. Only the Fronius Verto Plus is battery compatible.
Note:
For full compatibility, make sure that the Verto Plus is always running on the latest firmware version. You can update the firmware at any time in Fronius Solar.web.
An overview of compatible storage options can be found on the battery compatibility page.
You can use battery management (time of use) to define rules on how the battery should be charged or discharged depending on the day of the week and the time. The steps are the same as for the Fronius GEN24 Plus.
Advantages of this function:
- Define individual charging and discharging times depending on the day of the week and time
- Option to charge the battery from the grid depending on the electricity tariff
- Reserve storage capacity for periods of high PV production
Backup power
An overview of Fronius backup power solutions can be found in this document.
For information on our other backup power solutions, please select your product.
Feed-in limit (zero feed-in)
Dynamic power reduction can be enabled on the Verto und Verto Plus user interface under Safety and grid regulation - Feed-in limit. This makes it possible to limit the power fed into the grid and at the same time maximize direct self-consumption.
This function can also be used for zero feed-in systems.
Note: A Fronius Smart Meter is required in order to use this.
Smart Meter
With the Fronius Smart Meter, both the system data and the power consumption of the household can be recorded and used for intelligent energy management.
We recommend placing the Smart Meter at the feed-in point.
Further secondary meters can also be connected in order to visualize individual loads (Fronius Energy Profiling).
All Fronius Smart Meters, regardless of version or age, can be combined with each other.
Help & solutions
If there are any problems with the data transfer to Solar.web, please check our Internet service diagnosis.
Note: Fronius Verto and Verto Plus do not support 5 GHz WiFi. Use a 2.4 GHz WiFi network.
First download the appropriate firmware file from the downloads.
Our digital instructions then explain how to carry out the update via the user interface.
If a password for the local user interface has been forgotten, click on “Forgot password?” to generate a PIN for the user role (“Customer” or “Technician”). This PIN can be used to generate an activation code that enables the password to be re-registered.
Resetting the “Customer” password
- Go to your system in Fronius Solar.web with the generated PIN.
- Navigate to Settings → Components.
- Click “Actions” for the data source of the inverter and select “Reset customer password” to create the activation code for a new “Customer” password.
Note: The “Reset customer password” function can only be used by the owner of the Solar.web system. If this function is not visible, you are not entered as the owner. In this case, contact the installer of your system.
Resetting the “Technician” password
The “Technician” password is reserved for trained specialist personnel (electricians, system installers, Fronius Solutions Partners). They can use the “Recovery Key” function in Fronius Solar.SOS to reset the password.
Important note
The activation code is only valid as long as the corresponding PIN is displayed on the user interface. A new PIN is automatically generated after five incorrect activation codes are entered or the inverter is restarted. In this case, a new activation code must be generated.
Carry out the following steps to reconfigure the network after changes such as a router replacement, and to establish an Internet connection:
- Access the user interface of the inverter. The Setup wizard must be fully completed. If the wizard opens automatically when you call up the user interface, please follow all the necessary steps.
- Navigate on the user interface to Communication → Network.
- Select the desired connection type: LAN or WiFi.
- LAN: Select the Automatic or Static setting. Automatic is sufficient in most cases. Static may be mandatory in company networks. Contact the network administrator of your system for this.
- WiFi: Select your home network under Available networks and enter the WiFi password. Then select Automatic or Static. Automatic is sufficient in most cases. Static may be mandatory in company networks. Contact the network administrator of your system for this.
- Click Connect to apply the settings.
Reasons for missing notifications in the event of a device failure
1. Sending service messages is deactivated
- Navigate to your system in Fronius Solar.web under Settings → Service messages.
- Click on Edit and check the Send service messages box.
- Specify the period of time after which you would like to be notified in the event of a failure.
- Confirm the settings with OK.
2. No e-mail address stored for notifications
Navigate to your system in Fronius Solar.web under Settings → Contacts and check whether your e-mail address is entered correctly. Click on your e-mail address and then on Edit. Make sure that the "Receive service messages" box is checked.
Learn what steps can be taken to solve common issues when accessing the user interface.
Check the connection to the WiFi access point
The WiFi access point deactivates automatically 30 minutes after activation or when the network settings are changed. Some end devices may disconnect automatically if the internet connection is lost. Therefore, make sure that your end device (laptop, tablet, smartphone) is still connected to the inverter’s WiFi access point.
Connection via network security key (Windows 10)
Windows 10 devices automatically prompt you to enter a PIN code when connecting to a new WiFi network. In this case, select the option to enter a network security key instead. The network security key can be found on the rating plate on the side of the inverter. If there is no password printed on the rating plate, use 12345678 as a default.
Check the IP address used
- Access via WiFi access point: 192.168.250.181
- Access via Ethernet: 169.254.0.180
- Access via the home network: The local IP address that has been dynamically assigned or statically set by the router must be used.
Check the LAN interface used
When connecting via Ethernet, the LAN1 interface on the inverter must be used. LAN2 is currently not functional.
Delete browser cache and cookies
Problems with the display of the user interface or with the password prompt are often caused by saved browser data. Therefore, close the user interface, delete the cache and cookies for the entire period, and then call up the user interface again. The cache and cookies are deleted in the browser settings; the steps required may vary depending on the browser used.
Restart the inverter
If the user interface no longer responds, a restart may help:
- Disconnect on the AC side (RCCB or automatic circuit breaker).
- Disconnect on the DC side (switch located on the inverter).
- Leave the inverter switched off for approx. 30 seconds until all LEDs have gone out.
- Then reconnect the AC and DC sides.
Install the latest software
Make sure that your inverter is up to date with the latest software version.
Downloads & technical data
Contact & training
