SMA SB 1300TL - Manual (Page 44)

Message Explanation
Grid mon. Grid monitoring. This message appears before the inverter is connected to the
utility grid, if irradiation is low, and following an error.
Offset Offset alignment of the measurement electronics
Riso Measurement of the insulation resistance of the PV system
Disturbance The inverter has detected a disturbance. The specific disturbance message is
also displayed (for troubleshooting, see service manual at www.SMA-Solar.-
com).
Stop Operation interrupted
V-Const Constant voltage mode
Waiting The conditions for grid connection are not (yet) fulfilled.
9.2 LED Signals
The LEDs indicate the operating state of the inverter.
Designation Status Explanation
Green LED glowing Operation
The specific status message is shown in the display (see
service manual at www.SMA-Solar.com).
flashing
Red LED glowing Ground fault or varistor defective
The specific error or disturbance message is displayed (for
troubleshooting, see service manual at www.SMA-Solar.-
com).
Yellow LED glowing Permanent operation inhibition
The specific error or disturbance message is displayed (for
troubleshooting, see service manual at www.SMA-Solar.-
com).
flashing Error or disturbance
The specific error or disturbance message is displayed (for
troubleshooting, see service manual at www.SMA-Solar.-
com).
All LEDs are flashing
If the DC voltage is very low in the start-up phase, all three LEDs go out and the start-up phase
begins again. If irradiation is very low, all three LEDs are flashing. This flashing indicates a
normal operating state. No error has occurred.
All LEDs have gone out
If all three LEDs have gone out, the inverter is switched off because the ESS is not plugged in,
the external DC switch-disconnector is not switched on or there is no irradiation.
9 Operation SMA Solar Technology AG
Operating Manual SB13-21TL-BE-en-11 44