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. 1

    If this status code keeps recurring, contact your system engineer for diagnosis.

Browse all codes in this manual (60)
Verified technical data. Last updated: March 2026

Related Faults

Source: Fronius Symo Advanced Manual