Internal fault (e.g. communication to display)

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The Fronius Primo GEN24 208-240 inverter has detected an internal fault related to the communication with its display unit. While the inverter itself might be operating, the display may not show correct information or any information at all.

• Internal fault (e.g. communication to display).

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1. 1

   Perform a full power cycle of the Fronius Primo GEN24 208-240 inverter by disconnecting both AC and DC power, waiting several minutes, and then reapplying power.

2. 2

   Gently press and release the display to ensure it is properly seated and any physical connections are secure (if applicable and accessible).

3. 3

   Check if the display intermittently shows correct information or is completely blank, which can help diagnose the issue.

4. 4

   Update the inverter's firmware to the latest version, as display communication issues can sometimes be software-related.

5. 5

   If the display remains unresponsive or displays this fault code after power cycling and firmware update, contact Fronius service for potential display or internal communication board replacement.