SMA SC 500HE-20 Maintenance Manua - Manual (Page 33)

SMA Solar Technology AG 6 Maintenance Under Voltage-Free Conditions
Maintenance Manual SC500-800HE20-WH-en-10 33
Requirements:
☐ The miniature circuit-breaker of the external voltage supply must be switched on.
Figure 10: Position of the heating element and hygrostat
1. Open the doors.
2. Set the hygrostat to the minimum value.
☑ If the humidity exceeds the set value, the heating will start.
✖ Has the heating failed to start?
• Wait at least 5 minutes. If the heating element does not start, contact the
SMA Service Line.
3. Reset the hygrostat to the initial value. The initial value is included in the circuit diagram.
4. Close the doors.
Position Description
A Heating element
B Hygrostat