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2 blink codes, Blink codes – SMA SB 3300TL HC User Manual

Page 28

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Commissioning

SMA Solar Technology AG

28

SB3300TLHC-IEN094121

Installation Guide

PV Overvoltage

Check the string voltages again to make sure they are within the limits stated in section 5.1 ”Overview
Connection Area” (page 14).
If the input voltage is too high, contact the planner / installer of the PV
generator for assistance.
If despite checking the string voltages the LED signal occurs again when the PV generator is connected
to the Sunny Boy, disconnect the PV generator from the Sunny Boy again and contact SMA Solar
Technology (see section 13 ”Contact” (page 40)).

6.2 Blink Codes

NOTICE!
Excessive DC input voltage can destroy the Sunny Boy!

If the bottom yellow LED flashes four times at
intervals of one second, the grid voltage and the
PV generator must be immediately disconnected
from the Sunny Boy! There is a danger of
damage to the inverter resulting from excessive
DC input voltage!

Green

Red

Yellow

Status

Glows continuously

Is not glowing

Is not glowing

OK (feeding operation)

Glows continuously

Is not glowing

Disturbance

Glows continuously

OK (initialization)

Flashes quickly

(3 x per second)

Is not glowing

Is not glowing

OK (Stop)

Glows continuously

Is not glowing

Disturbance

Flashes slowly

(1 x per second)

Is not glowing

Is not glowing

OK (waiting, grid monitoring)

Glows continuously

Is not glowing

Disturbance

Briefly goes out

(approx. 1x per

second)

Is not glowing

Is not glowing

OK (derating)

Glows continuously

Is not glowing

Disturbance

Is not glowing

Is not glowing

Is not glowing

OK (night shutdown)

glowing/blinking

Disturbance

Glows continuously

Is not glowing

Disturbance

glowing/blinking

Disturbance

You will find a detailed description of the failure messages and their causes as well as the
meaning of the blink codes in the the Sunny Boy user manual included in delivery.