SMA PVO-N-20 - Manual (Page 46)

10 Troubleshooting SMA Solar Technology AG
46 PVO-BOX-IA-en-10 Installation Manual
x x x Yellow,
red x Insulation fault:
– Insulation resistance (including
inverter) against earth less than
200 kΩ
– Earth fault in the PV array
– Inverter and PV Offset Box in operation
simultaneously
• Check PV array for earth fault
(see inverter installation manual).
x x x x Yellow,
red Device fault
• Contact the SMA Service Line
(see Section 14 "Contact", page 52).
Off Flashing
red Flashing
red Flashing
red x Setting fault:
– The operating mode and output
voltage settings are not compatible
– Prohibited switch position selected
• Configure the SMA PV Offset Box
correctly (see Section 8 "Commissioning",
page 41).
Off Off Off Off Off No supply voltage
• Check AC-side installation.
Description and corrective measure