SMA SC 500HE-US Maintenance Manual - Manual (Page 41)

SMA America, LLC 4 Maintenance
Maintenance Manual SC500HEUS-eng-WH-IUS120411 41
Figure 13: Position of the low-temperature option controls
1. Switch the Sunny Central to "Stop."
2. Open the doors of the connection cabinet.
3. Open the doors of the inverter cabinet.
4. Disassemble the protective covers.
Position Designation
A Heating elements of the low-temperature option
B Terminal plug for heating control
C Heating elements of the low-temperature option