9 Maintenance SMA America, LLC
64 SB6-11TL-US-IA-en-13 Installation Manual
Fitting the Jumpers
1. Disconnect the Sunny Boy on the AC and DC sides.
Wait 5 minutes until the residual voltage has been drained.
2. Open the Sunny Boy as described in Section 8.1"Opening the Sunny Boy",page55.
3. Insert the jumpers supplied into the slot on the system control board shown below.
4. Close the Sunny Boy as described in Section 8.2"Closing the Sunny Boy",page56.
5. Check the air flow of the fans.
– The Sunny Boy draws in cold air from below through the fans and blows it out again through
the handle covers.
– Pay attention to unusual sounds.
6. After testing the fans, remove the jumper.
The Sunny Boy recognizes the jumpers after the restart.
All LEDs must be off prior to a restart.
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