Overvoltage on DC side (Battery)
Fronius · Primo GEN24
What does 507 mean?
The Fronius Primo GEN24 208-240 inverter has detected an excessively high voltage from the connected battery system on the DC side, exceeding its maximum input/output voltage rating. This could indicate a battery management system (BMS) fault or an incompatible battery.
Common Causes
- Overvoltage on the DC side (battery).
- Faulty battery or battery management system (BMS).
- Incorrect battery connected to the inverter.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Disconnect the battery using the DC disconnector and measure the battery voltage at its terminals.
- 2
Compare the measured battery voltage with the nominal and maximum voltage specifications for both the battery and the Fronius Primo GEN24 208-240 inverter.
- 3
Consult the battery manufacturer's manual for any specific fault codes or diagnostics indicated by the battery system itself.
- 4
Verify that the connected battery system is compatible with the Fronius Primo GEN24 208-240 inverter model, checking both voltage and communication protocols.
- 5
If possible, perform a controlled shutdown and restart of the battery system. If the issue persists, the battery or its BMS may be faulty; contact the battery supplier or Fronius service.