{"id":43367,"date":"2026-09-12T15:47:44","date_gmt":"2026-09-12T13:47:44","guid":{"rendered":"https:\/\/fvcomponentes.com\/fronius-solar-web-sin-conexion-datamanager-gen24\/"},"modified":"2026-09-12T15:47:44","modified_gmt":"2026-09-12T13:47:44","slug":"fronius-solar-web-no-connection-datamanager-gen24","status":"publish","type":"post","link":"https:\/\/fvcomponentes.com\/en\/fronius-solar-web-sin-conexion-datamanager-gen24\/","title":{"rendered":"Fronius Solar.web offline: how to restore communication with the Datamanager or the GEN24"},"content":{"rendered":"

When Fronius Solar.web displays the inverter in grey with the message \u201coffline\u201d or the code 1030<\/strong>, the inverter almost always continues to operate normally: what has been lost is the communication between the Datamanager (Primo\/Symo) or the GEN24\u2019s network module and the cloud. This guide covers the common causes and how to re-establish the connection.<\/p>\n\n\n\n

Firstly: does the inverter generate power?<\/h2>\n\n\n\n

Check the display or the status LED. If the inverter is generating power (green LED), the problem is simply a communication issue. If it is switched off or displaying an error code, go to My Fronius isn\u2019t working<\/a>.<\/p>\n\n\n\n

Most common causes<\/h2>\n\n\n\n
  1. 1. Changing your router or Wi-Fi password.<\/strong> The number one cause. The inverter retains the old network and cannot authenticate.<\/li>
  2. 2. Prolonged power cut.<\/strong> It takes a few minutes for the Datamanager to reconnect; some routers do not assign it an IP address until the inverter has been restarted.<\/li>
  3. 3. Weak Wi-Fi signal.<\/strong> An inverter in the garage, with a wall in between, is experiencing intermittent loss of connection. Solar.web will show gaps in the data.<\/li>
  4. 4. The router blocks ports.<\/strong> Solar.web requires an Internet connection via port 443 (and 15015 \/ 49049 on older versions of Datamanager). Corporate networks with firewalls usually block this.<\/li>
  5. 5. DNS or DHCP.<\/strong> If the router does not assign an IP address or the DNS does not resolve, the Datamanager cannot connect to the cloud, even if it has a Wi-Fi connection.<\/li><\/ol>\n\n\n\n

    Reconnecting a Primo \/ Symo (Datamanager 2.0)<\/h2>\n\n\n\n
    1. 1. On the inverter screen: Settings \u2192 Wi-Fi Access Point<\/strong> \u2192 Activate. The inverter creates a network called \u201cFRONIUS_240.xxxxx\u201d.<\/li>
    2. 2. Connect to that network from your mobile or laptop (password 12345678) and open http:\/\/192.168.250.181<\/strong>.<\/li>
    3. 3. Go to Settings \u2192 Network \u2192 Wi-Fi, select your network and enter the password. Save.<\/li>
    4. 4. Check under Settings \u2192 Solar.web that \u201cSend data to Solar.web\u201d is enabled and that the connection status is \u201cOK\u201d.<\/li>
    5. 5. If you are using an Ethernet cable, set the LAN to DHCP and check that the port LED is flashing.<\/li><\/ol>\n\n\n\n

      You can also use the app Fronius Solar.start<\/strong>: detects the inverter and guides the process.<\/p>\n\n\n\n

      Reconnecting a GEN24 \/ Tauro<\/h2>\n\n\n\n
      1. 1. Tap the access point button<\/strong> (WLAN icon) on the front of the inverter for 1 s: the communication LED flashes blue.<\/li>
      2. 2. Connect to the \u201cFRONIUS_\u201d network that appears (password 12345678) or scan the QR code on the label using Solar.start.<\/li>
      3. 3. Open http:\/\/192.168.250.181<\/strong>, log in as a Customer or Technician and go to Communication \u2192 Network \u2192 WLAN.<\/li>
      4. 4. Select your network, enter the password and save. In Solar.web, you\u2019ll see the inverter marked in green within a few minutes.<\/li><\/ol>\n\n\n\n

        If the GEN24\u2019s communication LED is steady red, there is a local network fault (no IP). If it is flashing orange, it is attempting to connect. Green: connected to Solar.web.<\/p>\n\n\n\n

        Checks on the router<\/h2>\n\n\n\n