What causes Fronius error 103?

Insufficient AC voltage from the public grid. Poor grid connection quality

How do you fix Fronius fault code 103?

1. Check all AC grid connections at the inverter and point of common coupling

103

AC voltage too low

Fronius · Solar Energy

What does 103 mean?

The AC voltage from the public grid is detected as too low. The inverter temporarily disconnects from the grid and will resume feeding energy once grid conditions return to the permissible range.

Common Causes

Insufficient AC voltage from the public grid
Poor grid connection quality

AC voltage too low

What does 103 mean?

Common Causes

AC voltage too low

What does 103 mean?

Common Causes

Repair Steps & Checklist

Related Faults