Installation Manual SMC9-11TLRP-IA-en-51 59
SMA Solar Technology AG 10 Troubleshooting
Status messages are shown in the second line of the display and always start with the word “Mode”.
Status messages indicate operating states which do not represent errors or faults. The inverter
continues feeding into the electricity grid.
10.2.2 Status Messages
Message Explanation
Balanced The inverter has disconnected from the electricity grid or is limiting its
power over a ten-minute average to 4.6 kVA. The inverter is part of a
three-phase system with two further inverters and is equipped with the
SMA Power Balancer to prevent the formation of unbalanced loads.
Derating This message can have several causes:
• Overtemperature in the inverter. The inverter reduces its power
to prevent overheating.
• External active power limitation via the Power Reducer Box and
Sunny WebBox. The inverter reduces its power output
automatically due to the network operator's specifications. The
Power Reducer Box transfers the signal from the network
operator to the inverter via the Sunny WebBox.
disturbance The inverter has detected a fault. The specific message is also
displayed (see section 10.2.3 "Errors, Faults, Warnings", page 60).
Earthfault Measurement of the insulation resistance of the PV plant
Error The inverter has detected an error. The specific error message is also
displayed (see section 10.2.3 "Errors, Faults, Warnings", page 60).
grid mon. Grid monitoring. This message appears before the inverter is
connected to the electricity grid if irradiation is low and following an
error.
MPP The inverter is operating in MPP mode. MPP is the standard display
message when operating under normal irradiation conditions.
MPP-Peak The inverter is operating in MPP mode above its nominal power.
MPP-Search The inverter is calculating the MPP.
offset Offset alignment of the measurement electronics
Stop Operation interrupted
V-Const Constant voltage mode
Waiting The conditions for grid connection are not (yet) fulfilled.
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