SMA America, LLC 10 Troubleshooting
Installation Manual SB30-40-US-IA-en-33 75
Fac-Bfr, Fac-Srr The AC power frequency exceeds the permissible range. To prevent
islanding, the inverter disconnects from the power distribution grid.
Corrective measures:
• Ensure that the AC cable is correctly connected (see Section 6.3).
• Ensure that the power frequency is within the permissible range.
• If the power frequency is within the permissible range and this
message continues to be displayed, contact SMA Service Line (see
Section 15).
GFDI Fuse Open The ground fuse has tripped.
Corrective measures:
• Check the PV plant for ground-faults (see Section 11.6).
• Replace the ground fuse (see Section 11.7).
Grid-Timeout,
Grid-Fault-S
The grounding system of the power distribution grid could not be detected.
Corrective measures:
• Contact the SMA Service Line (see Section 15).
Imax Overcurrent detected on AC side.
The current to the power distribution grid exceeds the specifications. This
may be caused by a serious system incident.
Corrective measures:
• Ensure that the PV plant is correctly rated.
• Ensure that the grid conditions are maintained.
K1-Close An internal test has failed.
Corrective measures:
• Contact the SMA Service Line (see Section 15).
K1-Open, K2-Open
MSD-FAC, MSD-Idif An internal measurement comparison fault has been detected.
The measured values of both processes (OCU and current controlling unit)
deviate too much from one another.
Corrective measures:
• Contact the SMA Service Line (see Section 15).
MSD-VAC
OFFSET Grid monitoring self-test failed.
Corrective measures:
• If the message occurs frequently, contact the SMA Service Line
(see Section 15).
Message Cause and corrective measures
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