SMA SUNNY TRIPOWER CORE1-US User Manual page 47

SMA Solar Technology America LLC
Event number
8003
8101 to 8104
9002
9003
9005
User Manual
Message, cause and corrective measures
Active power limited derating
The inverter has reduced its power output for more than ten minutes due to ex-
cessive temperature.
Corrective measures:
• Clean the cooling fins on the rear of the enclosure and the air ducts on
the top using a soft brush.
• Ensure that the inverter has sufficient ventilation.
• Ensure that the ambient temperature +35°C (95°F) has not been
exceeded.
• Ensure that the inverter is not exposed to direct solar irradiation.
Communication disturbed
The cause must be determined by the Service.
Corrective measures:
• Contact the Service (see Section 10 "Contact", page 60).
SMA Grid Guard code invalid
The SMA Grid Guard code entered is incorrect. The operating parameters are
still protected and cannot be changed.
Corrective measures:
• Enter the correct SMA Grid Guard code.
Grid parameter locked
Changes to the grid parameters are now blocked. In order to be able to make
changes to the grid parameters, from now on you must log in using the SMA
Grid Guard code.
Changing of grid parameters not possible > Ensure DC supply
This error can have the following causes:
• The parameters to be changed are protected.
• The DC voltage at the DC input is not sufficient to run the main CPU.
Corrective measures:
• Enter the SMA Grid Guard code.
• Ensure that at least the DC start voltage is available (green LED is
flashing, pulsing or glowing).
7 Troubleshooting
STP50-US-40-BA-en-10 47