VacL1/L2-Bfr/Srr - Voltage too high or low on specific AC leg

What does VacL1-Bfr, VacL2-Bfr, VacL1-Srr, VacL2-Srr mean?

The voltage measured on a specific AC leg (L1 or L2) is either too high or too low, exceeding the allowable range for the Sunny Boy. This is identified as a disturbance message.

• Instability in the public grid
• Issue with specific AC leg wiring or connections.

Click steps to track your progress.

1. 1

   Check the stability and voltage levels of the public utility grid.

2. 2

   Have a qualified electrician inspect the AC wiring and connections to the Sunny Boy, focusing on the indicated leg (L1 or L2).

3. 3

   If the problem persists, contact SMA America for assistance.