Troubleshooting - SMA Sunny Island 2012 Technical Description

Troubleshooting/Problem Solving

18.8 Troubleshooting

Questions that may be raised in practice are answered below:
Why does the Sunny Island not connect to the running generator?
• Check the generator fuses.
• Has the power allowed to be fed back into the generator during the permissible time been
exceeded ("233.14 GnRvTm" parameter)?
If so, "!" appears in the display. Generator connection is blocked for the time set. Set the
"540.02 GnAck" parameter to Ackn.
• If the generator control relay (GnReq) is open:
Has the generator been started manually ("233.07 GnStrMod" parameter)? Change the
setting here to autostart, if required.
Why is the display of the Sunny Remote Control 1 dark and why is nothing displayed?
• Is the communication cable connected, and did both RJ45 plugs snap into their sockets
audibly?
• Has the BatFuse (external DC fuse) been actuated?
The Sunny Island is disconnected from the battery this way and has switched off. Replace the
DC fuses.
• Is the BatFuse functional?
In this case the device has switched off to protect the batteries from deep discharge (see also
section 12.3 "Charge State/SOC and SOH" (Page 121)). To restart the Sunny Island, see
section 10.1.5 "Restarting the System after Automatic Shutdown" (Page 88).
Why is it not possible to change parameters?
• Has the installer password been entered correctly? Check whether you are actually in
"Installer Level" (see section 10.3.2 "Setting the Installer Password" (Page 102)). If necessary,
repeat the calculation and entry of the password.
• You are in the "100-Meters" (Measuring data) menu or the "300-Diagnose" (Diagnosis)
menu. The data values shown here can only be read.
• Some parameters can only be changed in standby mode or in the QCG (see e.g. the "233.07
GnStrMod" parameter in section 17.2 "Adjustable System Parameters" (Page 166)). Stop the
Sunny Island as described in section 10.1.2 "Stopping" (Page 85). Note that this causes a
dropout in the stand-alone grid and the loads are no longer supplied.
Why does the Sunny Island connect to the running generator only for a short time?
• The limits for the maximum permissible AC voltage or the minimum permissible frequency of
the generator are too strict (parameter in menu "233 Generator Control"). Change voltage
and/or frequency limits while observing the technical data for your generator.
192 SI2012_2224-TEN082311
SMA Solar Technology AG
Technical Description