751
Time lost
Fronius · Solar Energy
What does 751 mean?
The inverter's internal clock has lost its time setting, resulting in inaccurate timestamps. A warning message is shown on the display.
Common Causes
- Loss of internal clock power source (e.g., battery, capacitor)
- Real Time Clock (RTC) module malfunction
Repair Steps & Checklist
Click steps to track your progress.
- 1
Reset the time and date on the inverter
Verified technical data. Last updated: March 2026
Related Faults
Source: Fronius Solar Energy