SMA PVO-N-20 - Manual (Page 14)

4 Product Description SMA Solar Technology AG
14 PVO-BOX-IA-en-10 Installation Manual
4.4 LEDs
The LEDs for fault indication are 2-colour. They glow red if operation is currently interrupted. They
glow yellow if a fault has previously occurred, but normal operation is currently possible.
Item Description Explanation
A Green LED Indicates the operating state of the SMA PV Offset Box.
B Red-yellow LED Indicates an FE connection fault or AC connection fault.
C Red-yellow LED Indicates a DC connection fault.
D Red-yellow LED Indicates an insulation fault.
E Red-yellow LED Indicates a device fault.