SMA Solar Technology AG Maintenance and Cleaning
Installation Guide SB33_38-IEN111851 49
Plugging the Jumper
The inverter recognizes the jumper only after the system has been restarted (i.e. all LEDs must have
gone out before a restart).
1. Open the inverter as described in section 7.2”Opening the Inverter” (page43).
2. Plug the provided jumper in the socket on the sequential control system board as shown below.
3. Close the inverter as described in section 7.3”Closing the Inverter” (page45).
4. Restart the inverter.
5. Check the air-flow of the fan.
The inverter sucks air in from underneath and then blows it back out on the upper left side. Listen
for any unusual noise that could indicate incorrect installation or that the fan is faulty.
6. Remove the jumper. Open and close the inverter as described in section 7”Opening and
Closing” (page43).
☑ You have finished checking the fan.
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