No communication with internal components
Fronius · Primo GEN24
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.
Common Causes
- No communication with internal components.
Repair Steps & Checklist
Click steps to track your progress.
- 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
Ensure that no internal connections were disturbed during any recent maintenance or installation activities (only by qualified personnel).
- 3
Verify that the inverter's firmware is up to date, as communication issues can sometimes be resolved with software updates.
- 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
If the issue persists, this indicates a serious internal hardware fault; contact Fronius service for further diagnosis and potential component replacement.