No communication with internal components

What does 604 mean?

The Fronius Primo GEN24 208-240 inverter has lost communication with one or more of its critical internal components. This indicates an internal hardware issue, preventing the inverter from functioning correctly.

• No communication with internal components.

Click steps to track your progress.

1. 1

   Perform a full power cycle of the Fronius Primo GEN24 208-240 inverter by sequentially opening the AC circuit breaker and the DC disconnector, waiting a few minutes, then reclosing them.

2. 2

   Ensure that no internal connections were disturbed during any recent maintenance or installation activities (only by qualified personnel).

3. 3

   Verify that the inverter's firmware is up to date, as communication issues can sometimes be resolved with software updates.

4. 4

   Check the inverter's event log for any other accompanying fault codes that might provide more specific details about the internal communication failure.

5. 5

   If the issue persists, this indicates a serious internal hardware fault; contact Fronius service for further diagnosis and potential component replacement.