Fronius Symo Hybrid Inverter Display total failure — Display remains dark

What does Display Total Failure mean?

The inverter's display is completely dark, indicating a total loss of power to the display. This means all three methods of supplying power to the display have failed.

• AC voltage supply issue to inverter
• DC voltage from solar modules too low
• DC voltage from battery too low

Click steps to track your progress.

1. 1

   Check the AC voltage on the inverter connection sockets; it must be 220/230 V (+10% / -5%) or 380/400 V (+10% / -5%).

2. 2

   Check the DC voltage of the solar modules on the connection sockets of the inverter; it must exceed 180 V.

3. 3

   Check the DC voltage of the battery on the connection sockets of the inverter; it must exceed 120 V.