Troubleshooting Error Messages
SB3000US-4000US-11-SE1607 SMA America 8-3
Error Messages
If a fault occurs, the Sunny Boy generates an error code according to the operating
mode and the type of fault detected.
Error Type Error Code Description
Disturbance Bfr-Srr Communication between micro-controllers is failing. Con-
tact SMA for assistance.
Warning Derating The inverter reduces the output power due to high internal
temperature. Verify that the fans are operating normally
and that the intake screens are clean. Check the intake
vents for debris. Verify that there is adequate ventilation
around the inverter. This condition may be normal in peri
-
ods of high ambient temperatures (above 45°).
Error EarthCurMax-B The earth current between PV+ and GND has exceeded
the maximum limit. Check the PV array for ground faults.
Error EarthCurMax-S The earth current between PV+ and GND has exceeded
the maximum limit. Check the PV array for ground faults.
Disturbance EEPROM Transition failure during reading or writing of data EE-
PROM, the data is not essential for safe operation - this fail-
ure does not effect performance.
Error EEPROM p Data EEPROM defective, device is set to permanent dis-
able due to the fact that the data loss affects important func-
tions of the inverter. Contact SMA for assistance.
Disturbance EeRestore Internal failure.
Disturbance Fac-Bfr
Fac-Srr
The AC grid frequency is exceeding the allowable range.
(“Bfr“ or “Srr“ is an internal function.) The Sunny Boy as-
sumes that the utility grid is down and disconnects to pre-
vent islanding.
If the grid frequency is within the tolerable range and you
still observe the failure message “Fac-Bfr“ or “Fac-Srr“,
check for possible intermittent connections. For additional
assistance, contact SMA.
Warning GFDI Fuse Open The GFDI-Fuse is open or cleared. Check the PV array for
ground faults before replacing the fuse.
Disturbance Grid-Timeout
Grid-Fault-S
The type of grid could not be detected (208/240).
Disturbance Imax Over current on the AC side. This failure code is indicated
if the current to the AC grid exceeds the allowable limit.
This may happen due to harmful interference on the grid.
If you observe “Imax“ often, check your grid conditions.
For assistance contact SMA.
To Next Page
Loading...
