Fronius Symo Hybrid Inverter Code 460 — Reference voltage source for DSP is out of tolerance

What does 460 mean?

The reference voltage source for the Digital Signal Processor (DSP) within the inverter is operating outside its acceptable tolerance. This critical error prevents the inverter from feeding energy into the grid.

• Internal DSP hardware fault
• Power supply issue to DSP
• Component aging or failure

Click steps to track your progress.

1. 1

   Perform a full AC and DC power cycle of the inverter: Disconnect both AC and DC power, wait 5 minutes, then reconnect.

2. 2

   Observe the inverter to see if the error clears and energy feeding resumes.

3. 3

   If the status code is displayed all the time, notify a Fronius-trained service engineer.