GEN24 & GEN24 Plus
Support
Frequently searched topics:
Basics
The GEN24 product family includes the single-phase Primo GEN24 and Primo GEN24 Plus, as well as the three-phase Symo GEN24 and Symo GEN24 Plus.
- The GEN24 is a future-proof inverter with integrated basic backup power, the PV Point. The hybrid functions for battery operation and optional Full Backup can be activated at a later date via the Fronius UP.storage software upgrade. This upgrade is carried out via Solar.web and then in the Fronius online store by the installer.
- With the GEN24 Plus, all functions are available from the moment of purchase. GEN24 and GEN24 Plus differ purely in terms of software and have the same range of functions with the exception of the battery operation and the Full Backup functions.
Note: Availability of the UP.storage upgrade program varies from country to country. A current overview of countries in which a GEN24 can be upgraded to a GEN24 Plus can be found here.
Planning & installation
Planning
The Fronius Solar.creator is a free, flexible, and user-friendly online configuration tool for planning and designing PV systems. The Solar.creator supports you throughout all phases of project planning and can be individually adapted to your requirements.
An optional retrofittable DC fuse type 1+2 for two MPP trackers is available for Fronius GEN24 and GEN24 Plus (item number 4,240,313,CK).
Further documentation and instructions can be found in the Downloads section.
The maximum usable input current (Idc max MPPT1 / MPPT2) specified in the datasheet may be exceeded without violating the warranty conditions.
Note: The maximum short circuit current of the module array (Isc max) must not exceed the value specified in the datasheet (1.5 x Idc max).
If Idc max is exceeded, the inverter actively limits the current to the specified value. This can result in small yield losses.
Example: A 13.5 A PV module on a Symo GEN24 10.0 Plus, MPPT2 (Idc max = 12.5 A). An annual yield reduction of up to 0.2% is to be expected for a module with 13.5 A Impp, as this current value is rarely reached.
Further information can be found in the associated whitepaper.
DC power optimizers regulate the voltage of overshadowed PV modules. But as shading increases, optimizer self-consumption also increases, ultimately reducing efficiency. Especially in the case of partial shading, power optimizers often fail to fully compensate for losses and may not result in increased overall system performance.
Compatibility with power optimizers is not confirmed for the GEN24 product family.
System functions & integration
Fronius Solar.web
Fronius Solar.web is available in full as a desktop or app version for monitoring your GEN24 and GEN24 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 GEN24 and GEN24 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 GEN24 or GEN24 Plus inverters are installed alongside other Fronius inverters in a system, the GEN24 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 GEN24 and GEN24 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. 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 GEN24 can be activated to support battery operation at any time using the Fronius UP.storage software upgrade. This upgrade is carried out via Solar.web and then in the Fronius online store by the installer.
With the GEN24 Plus, all functions are already available from the moment of purchase.
An overview of the compatible batteries 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.
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.
All GEN24 and GEN24 Plus devices are equipped with the PV Point as standard, which can supply a single-phase socket with up to 3 kW of power in the event of a grid outage, as long as the sun is shining. Detailed information and instructions for the PV Point can be found in the operating instructions for your inverter in the Downloads section.
For information on the other backup power solutions, please select your product.
Feed-in limit (zero feed-in)
Dynamic power reduction can be activated on the GEN24 and GEN24 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.
Detailed information and instructions can be found in the operating instructions for your inverter in the Downloads section.
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 GEN24 and GEN24 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.
Reset 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.
Reset 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. After restarting the inverter or after entering an incorrect activation code five times, a new PIN is generated. 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 notification in the event of a device failure:
Sending service messages is deactivated
1. Navigate to your system in Fronius Solar.web under Settings → Service messages.
2. Click on Edit and check the Send service messages box.
3. Specify the period of time after which you would like to be notified in the event of a failure.
4. Confirm the settings with Ok.
No e-mail address stored for notifications
Navigate to your system in Fronius Solar.web under Settings → Contacts and check whether your e-mail is entered correctly. Click on your e-mail address and then on Edit. Check whether 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
- When accessing 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. These are deleted in the browser settings. The procedure varies 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
