5 Troubleshooting SMA America, LLC
22 SB30-40-BA-eng-BUS121010 User Manual
Goes out briefly
once per second
Derating
At temperatures above +113°F (+45°C), the
inverter continues to operate but reduces the
power so as to protect the internal
components from overheating.
Corrective measures:
• Ensure that the inverter has sufficient
ventilation.
• Ensure that air is emerging from the fan
enclosure. If no air is emerging from the
fan enclosure, clean the fan enclosure
(see section 6.4).
B Red LED Glowing Grounding fuse tripped
The grounding fuse has been tripped or is
missing. The grounding fuse protects the PV
plant if a ground fault is present in the PV
array.
Corrective measures:
• Contact installer.
C Yellow LED Glowing Control system error
The inverter is no longer feeding into the
power distribution grid.
Corrective measures:
• Contact installer.
Blinking AFCI self-test
The inverter is performing an AFCI self-test.
Glows for 5 s,
goes out for 3 s,
blinks twice
Grid failure
The power distribution grid has failed or the
AC miniature circuit-breaker has been
triggered.
Corrective measures:
• Ensure that there is no power distribution
grid failure.
• If there is no power distribution grid
failure, contact the installer.
Position Description Status Explanation
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