Installation and Operating Instructions V04 64
11 Troubleshooting
When the PV power plant does not operate normally, fault information will
be shown up on the displayand the red LED will be lit at the same time.
We recommend the following actions for quick troubleshooting.
The corresponding causes are described in section 9.2 ‛Display messages“.
Object
Error code Corrective measures
Presumable
Fault
6
• Check the open-circuit voltages of the strings and make
sure it is below the maximum DC input voltage of the
inverter.
• If the input voltage is within the permitted range and the
fault still occurs, it might be that the internal circuit has
broken. Contact the service.
33
• Check the grid frequency and observe how often major
fluctuations occur.
If this fault is caused by frequent fluctuations, try to
change the operating parameters after informing the grid
operator first.
34
•Check the grid voltage and grid connection of the inverter.
• Check the grid voltage at the connection point of the
inverter.
If the grid voltage is outside the permissible range due to
local grid conditions, try to change the values of the
monitored operating limits after informing the grid
operator first.
If the grid voltage lies within the permitted range and this
fault still occurs, please contact the service.
35
• Check the fuse and the triggering of the AC circuit
breaker in the distribution box.
• Check the grid voltage, grid usability.
• Check the AC cable, grid connection on the inverter.
If this fault is still being shown, contact the service.
