SMA SUNNY CENTRAL 900CP XT - Inverter with Low-Temperature Option: Cleaning the Heating Elements

6 Maintenance
SMA Solar Technology AG
Maintenance Manual 47SCCPXT-E7-WA-en-37
4. Check whether the heating elements are radiating heat after a delay time of fiveminutes.
If the heating elements are not radiating heat, contact us (see Section9 "Contact", page68).
5. Reset the hygrostat to the initial value. To do this, press the selector switch back towards the hygrostat. The initial
value of the hygrostat is indicated on the hygrostat.
6.4.1.3 Inverter with Low-Temperature Option: Cleaning the Heating Elements
Figure 12: Position of the heating elements and the temperature control
Position Designation
A Heating element with low-temperature range option
B Connection plug of the temperature control
DANGER
Danger to life due to electric shock or electric arc if live components are touched
• Switch off the inverter and wait at least 15minutes before opening it to allow the capacitors to discharge
completely.
• Disconnect the inverter (see Section4, page26).
Procedure:
1. Disassemble the protective covers (see Section7.1.2, page63).
2. Remove dirt and dust from the heating elements.
3. Remove moisture.
4. Mount the protective covers (see Section7.1.2, page63).