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Commissioning
PV Overvoltage
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!
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
Green
Glows continuously
Flashes quickly
(3 x per second)
Flashes slowly
(1 x per second)
Briefly goes out
(approx. 1x per
second)
Is not glowing
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.
28
SB3300TLHC-IEN094121
Red
Is not glowing
Glows continuously
Is not glowing
Glows continuously
Is not glowing
Glows continuously
Is not glowing
Glows continuously
Is not glowing
Glows continuously
Yellow
Is not glowing
Is not glowing
Glows continuously
Is not glowing
Is not glowing
Is not glowing
Is not glowing
Is not glowing
Is not glowing
Is not glowing
glowing/blinking
Is not glowing
glowing/blinking
SMA Solar Technology AG
Status
OK (feeding operation)
Disturbance
OK (initialization)
OK (Stop)
Disturbance
OK (waiting, grid monitoring)
Disturbance
OK (derating)
Disturbance
OK (night shutdown)
Disturbance
Disturbance
Disturbance
Installation Guide
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