Inverter with Smart Meter: no communication

What does 403 mean?

The Fronius Primo GEN24 208-240 inverter, configured for operation with a Smart Meter, has lost communication with the device. This fault specifically refers to configurations where a Smart Meter is essential for the operating mode, thus halting normal inverter function.

• No communication with the Smart Meter.
• Wiring fault (e.g. incorrect or loose cable, crossed data lines).
• Smart Meter not powered.
• Incorrect Smart Meter address or settings.

Click steps to track your progress.

1. 1

   Reconfirm all communication cabling (e.g., RS485) between the Fronius Primo GEN24 208-240 inverter and the Smart Meter is correctly installed, free from damage, and securely terminated.

2. 2

   Check the power supply to the Fronius Smart Meter to ensure it is receiving adequate voltage and is operational.

3. 3

   Verify that the Modbus address and baud rate configured in the inverter match the settings of the Smart Meter.

4. 4

   Inspect the Smart Meter's status LEDs for any indications of error or power loss.

5. 5

   Power cycle the inverter and the Smart Meter in sequence to reset the communication interface.