SMA SC 500CP-US Maintenance Manual - Manual (Page 49)

SMA America, LLC 9 Maintenance when Control Voltage is Present
Maintenance Manual SCCP-US-WH-US_en-30 49
Procedure:
2. Open the doors of the inverter cabinet.
3. Connect the control voltage (see Section 8).
☑ The internal fan and the fan of the inverter bridge start up for a short time.
✖ The internal fan and fan of the inverter bridge do not start?
• Contact the SMA Service Line.
4. Set the hygrostat to the minimum value. To do so, pull out the selector switch gently. Tip: the hygrostat is adjusted
correctly if the relay of the hygrostat emits an audible click.
5. Check whether the heating element is beginning to radiate heat after approx. five minutes. If the heating element
does not radiate heat, contact the SMA Service Line.
6. Reset the hygrostat to the initial value. Press the selector switch against the hygrostat again. The initial value of the
hygrostat is included in the circuit diagram. In addition, there is a white marking on the selector switch.
7. Close the inverter doors.
1. '$1*(5
Danger to life due to electric shock or electric arc by touching live components
• Disconnect the inverter and wait 15 minutes until the capacitors have discharged completely (see Section 6).