56 SMC9-11TLRP-IA-en-51 Installation Manual
10 Troubleshooting SMA Solar Technology AG
The LEDs indicate the operating state of the inverter.
10 Troubleshooting
10.1 LED Signals
Designation Status Explanation
Green LED Glowing Operation
The specific status message is shown in the
display (see section 10.2.2 "Status Messages",
page 59).
Flashing Conditions for grid connection are not yet
fulfilled.
Red LED Glowing Earth fault
The specific error or fault message is shown in the
display (see section 10.2.3 "Errors, Faults,
Warnings", page 60).
Flashing Varistor or string fuse defective
The specific error or fault message is shown in the
display (see section 10.2.3 "Errors, Faults,
Warnings", page 60).
Yellow LED Glowing Permanent operation inhibition
The specific error or fault message is shown in the
display (see section 10.2.3 "Errors, Faults,
Warnings", page 60).
Flashing Error or fault
The specific error or fault message is shown in the
display (see section 10.2.3 "Errors, Faults,
Warnings", page 60).
All LEDs are flashing
If the DC voltage is very low in the start-up phase, all three LEDs go out and the start-up phase
begins again. If irradiation very low, all three LEDs flash. This flashing indicates a normal
operating state. It does not indicate an error.
All LEDs have gone out
If all three LEDs have gone out, the inverter is switched off because the ESS is not plugged in
or there is no irradiation.
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