SMA WINDY BOY 3300 - Error Messages

Troubleshooting SMA Solar Technology AG
52 WB33_38-IEN101830 Installation Guide
9.2 Error Messages
When en error occurs, the inverter generates a message, which depends on the operating mode and
the type of the detected error.
Message Description / Remedy
!PV-Overvoltage!
!DISCONNECT DC!
DC overvoltage!
Disconnect the small wind turbine system from the inverter immediately.
1. Turn off the line circuit breaker.
2. Stop the small wind turbine system.
3. Disconnect the PV connectors.
4. Check DC voltage:
– If the DC voltage is above the maximum input voltage, check
the plant design.
–If the DC voltage is under the maximum input voltage,
reconnect the small wind turbine system to the inverter as
described in section 5.5.4”Connecting the Small Wind Turbine
System (DC)” (page32).
If the message occurs again, disconnect the inverter again and contact
the SMA Serviceline.
ACVtgRPro The 10-minute-average grid voltage is no longer within the permissible
range. This can have the following causes:
• The grid voltage at the connection point is too high.
• The grid impedance at the connection point is too high.
The inverter disconnects to assure compliance with the voltage quality of
the grid.
• Check the grid voltage at the connection point of the inverter:
– If, due to the local grid conditions, the grid voltage is 253V or
more, ask the utility operator whether the voltage at the feed-in
point can be adjusted, or whether it would agree to an
alteration of the limit value "ACVtgRPro" for voltage quality
monitoring.
– If the grid voltage is continually within the acceptable range
and this error is still displayed, contact the SMA Serviceline.
Bfr-Srr Internal measurement comparison fault or hardware defect.
• If this fault occurs often, contact the SMA Serviceline.