SMA SC 500HE-20 Maintenance Manua - Manual (Page 14)

5 Maintenance when Voltage is Present SMA Solar Technology AG
14 SC500-800HE20-WH-en-10 Maintenance Manual
5 Maintenance when Voltage is Present
5.1 Reading off Error Messages and Warnings
You can connect a PC via the service interface on the outside of the interface cabinet
(see the Sunny Central installation manual).
• If an error occurs, view the error message on the display or SC-COM interface and respond
accordingly (see the Sunny Central user manual).
5.2 Checking the DC Switch-Disconnector
Figure 2: Design of the DC switch-disconnector
Requirements:
☐ Control voltage is present.
☐ DC voltage is connected.
Item Description
A Spring status indicator
B Position indicator
C ON button
D OFF button