Sma SUNNY BOY User Manual download pdf (Page 21)

SMA Solar Technology AG Operating Modes

User Manual SB_SMC-BEN092840 21

3.4.7 The yellow LED blinks 5 times

Device fault

The yellow fault LED lights up for 5 seconds when the fault occurs, and then starts emitting the

following blink code. 3 seconds off and then 5 brief consecutive blinks. This code is emitted 3 times

in succession. If after this the fault is still present, the fault signal starts over again.

For all transformerless devices this blink code can occur in combination with the display warning

<Disturbance Earthfault> (with the exception of SMC 9000TL(RP)-10, 10000TL(RP)-10,

11000TL(RP)-10, for which the warning is <Disturbance Earthfault-Sense>) and is caused by a fault

in the insulation monitoring system.

Correction of error by installer

If the device failure has a severe negative impact on normal operation, you must contact

your installer, who will check the inverter and the entire plant installation. It is essential to

ensure that devices without transformers (with "TL" in the device name) are correctly

grounded!

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Sma SUNNY BOY User Manual Page 21