SMA Solar Technology AG
78 SB50US-80US-IUS094030 Installation Guide
The installed firmware versions of the control system
processor (BFR) and the current regulator processor
(SRR) are displayed after 6 seconds.
Operation Messages
The LCD continuously scrolls through all relevant operating data. Each message (MSG) is displayed
for 5 seconds, after all messages have been displayed the LCD repeats from the beginning.
MSG #1 “E-Today“ (total energy produced on this day)
is displayed together with the current operating mode:
MSG #2 Nominal grid voltage configuration and actual
line-to-neutral voltage measurements:
The Sunny Boy 8000US may not be connected to a 208
V grid.
MSG #3 Actual AC power output and DC input voltage:
MSG #4 Accumulated energy yield of the device since
installation and the total operating hours:
Fault Messages
In case of a fault condition the LCD switches to “Fault“ mode and the backlight is activated.
The upper display line indicates one of the three following failure types:
•Disturbance
For example, this Disturbance message would be
displayed if the Sunny Boy detected a problem with
the frequency of the utility grid. The message would
clear automatically once the condition was
corrected. Disturbances are typically caused by a
measured value exceeding a predetermined limit.
The display will show the value of the error (at:) as
well as the present value for the particular
parameter (present:).
The screens may also be scrolled through manually by repeatedly knocking on the lid of
the inverter. Each knock advances the screen to the next message.
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