476
Driver supply voltage too low
Fronius · Symo Advanced Manual
What does 476 mean?
The internal supply voltage for the inverter's gate drivers, which control the power semiconductors, is too low. This can prevent the power stage from operating correctly or safely.
Common Causes
- Internal power supply malfunction within the inverter
- Component failure in the driver supply circuit
Repair Steps & Checklist
Click steps to track your progress.
- 1
If this status code keeps recurring, contact your system engineer for diagnosis.
Verified technical data. Last updated: March 2026
Related Faults
Source: Fronius Symo Advanced Manual