Installation Guide

11 Troubleshooting SMA America, LLC
74 SB3-5TLUS22-IA-en-16 Installation Manual
Cleaning the Fan
4. Remove the fan and clean it with a soft brush, a paint brush or a cloth and water. Clean the fan
guard as well.
Inserting the Fan
6. Slide the fan into the fan guard from the right-hand
side.
☑ The fan snaps audibly into place.
7. Recommission the inverter (see Section7 "Commissioning", page47).
11.5 Checking the PV System for Ground Faults
If the inverter displays the event numbers 3501, 3601 or 3701, there could be a ground fault.
The electrical insulation between the PV system to ground is defective or insufficient.
Damage to the fan through use of compressed air
• Do not use compressed air to clean it. This could damage the fan.
Correct airflow direction
5. The arrow and type label on the fan must point upwards before installation.