313
DC input voltage MPPT 2 too high
Fronius · Symo Advanced Manual
What does 313 mean?
The DC input voltage on Maximum Power Point (MPP) tracker 2 has exceeded its maximum permissible limit. This indicates an overvoltage condition on the specific solar string connected to MPPT2.
Common Causes
- Overvoltage from the solar array connected to MPPT2
- Incorrect sizing or configuration of the solar string for MPPT2
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