Troubleshooting
SMA Solar Technology AG
74
SSMUS-TUS094511
Technical Description
12 Troubleshooting
12.1 Detection and Elimination of Faults
By means of the Sunny WebBox you can look at the spot value "
Error
" for the Sunny Central String-
Monitor Controller or the Sunny Central String-Monitor. These spot values indicate that errors have
occurred.
12.1.1 Detecting errors with the Sunny Central String-Monitor
Controller
1. Log into the Sunny WebBox as an installer.
2. Go to "
System > Devices
" on the web interface.
3. Select the Sunny Central String-Monitor Controller "
SCSMC
" in the list.
4. Select the tab "
Spot values
".
5. Select the spot value "
Error
".
☑ If the spot value "
Error
" displays an alert, compare the message with the following table and
eliminate the error. If the spot value "
Error
" does not display any warning, go on to next point.
Display
Meaning
Corrective measures
> Warning 380
A string is not reaching the
normal current. String failure or
error trigger
>: Incoming warning
<: Outgoing warning
• Check which Sunny Central String-
Monitor is faulty (see spot value
"
SSMUWrnCode
"in Section
11.3.1 "Spot values Sunny Central
String-Monitor Controller" (page 64)).
• Check string current values in the Sunny
Central String-Monitor
☑ If the string current values are
correct:
– Adjust parameter "
ErrLevGr
" in the
Sunny Central String-Monitor
Controller.
☑ If the string current values are
incorrect:
– Check the hardware of the Sunny
Central String-Monitor.
– Use clamp meter to test the PV field/
panel.
< Warning 380
