SMA 3000TL-US, Installation Manual

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SMA America, LLC 11 Troubleshooting
Installation Manual SB3-5TLUS22-IA-en-12 71
11.3 Cleaning the Inverter
• If the cooling fins on the rear of the enclosure are dirty, clean them with a soft brush.
• If the air ducts on the top of the inverter are dirty, clean them with a soft brush.
11.4 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.
9005 Changing grid param.
not possible
Ensure DC supply This error can have the following causes:
• The selected rotary switch setting for the
country configuration is not programmed.
• The parameters to be changed are
protected.
• The DC voltage at the DC input is not
sufficient to run the main CPU.
Corrective measures:
• Check the settings of the rotary switches (see
Section 7.1.2 "Changing the Country Data
Set and the Display Language", page 49).
• Enter the SMA Grid Guard code.
• Ensure sufficient DC voltage (green LED
lights up or flashes).
Damage to the display due to the use of cleaning agents
• If the inverter is dirty, clean the enclosure lid, the display, and the LEDs using only clean water
and a cloth.
Danger to life due to electric shock
In the event of a ground fault, high voltages can be present in the PV module construction.
• Only touch the cables of the PV modules on their insulation.
• Do not connect DC cables with ground faults to the inverter.
Event number Display message Cause and corrective measures