SMA America, LLC 5 Troubleshooting
User Manual SB30-40-BA-eng-BUS121010 29
VacL1-Bfr
VacL2-Bfr
VacL1-Srr
VacL2-Srr
The AC input voltage is too high or too low on the indicated branch.
The inverter disconnects itself from the power distribution grid. As soon as
the error has been remedied, the inverter tries to feed into the power
distribution grid again. If the inverter cannot feed into the power
distribution grid after several attempts, the inverter triggers the permanent
inhibition of operation.
Corrective measures:
• Contact installer.
VpvMax
!PV Overvoltage!
!Disconnect DC!
The DC input voltage is above the set maximum limiting value.
Corrective measures:
• Immediately turn the rotary switch of the DC Disconnect to the Off
position.
• Contact installer.
Watchdog An internal program run disturbance was detected.
The inverter disconnects itself from the power distribution grid. As soon as
the error has been remedied, the inverter tries to feed into the power
distribution grid again. If the inverter cannot feed into the power
distribution grid after several attempts, the inverter triggers the permanent
inhibition of operation.
Corrective measures:
• Contact installer.
XFMR_TEMP_F A high transformer temperature was detected.
The inverter ceases operation and the fan runs at maximum speed.
Corrective measures:
• Ensure sufficient ventilation.
• If the message occurs frequently, contact the installer.
XFMR_TEMP_W The inverter starts feed-in operation again once the transformer
temperature has been reduced.
Corrective measures:
• If the message occurs frequently, contact the installer.
Message Cause and corrective measures
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