SMA SMC 4600A - Manual (Page 17)

SMA Solar Technology AG Troubleshooting
User Manual SMC46-60A-BA-BEN114230 17
7 Troubleshooting
7.1 Status Messages
Your inverter can be in various operating states. These are displayed as status messages, which can
vary according to the type of communication.
Message Description
Balanced The inverter has disconnected from the power distribution grid or
is limiting its power over a 10 minute average to 4.6 kVA
(in Italy: 6 kVA). The inverter is a part of a 3 phase system with
2 further inverters and equipped with the SMA Power Balancer for
the avoidance of unbalanced loads.
Derating Overtemperature in the inverter. The inverter reduces its output to
prevent overheating. To avoid unnecessary yield penalties, the
design of the PV plant should be checked. Inform your installer.
Error An error has been detected. Inform your installer.
MPP The inverter is operating in MPP mode. MPP is the standard display
message when operating under normal radiation conditions.
MPP Peak The inverter is operating in MPP mode above its nominal power.
Mpp‑Search The inverter is calculating the MPP.
grid mon. Grid monitoring
This display appears during the start phase, before the inverter is
connected to the power distribution grid, predominantly in the
morning and evening when radiation is too low and after an error.
Off Grid The inverter is in "Island" mode. This mode is specially designed for
operation in an off‑grid system.
OFFSET Offset adjustment of the measurement electronics.
Riso Measurement of the insulation resistance of the PV plant.
Disturbance, disturbance Disturbance.
This message appears for safety reasons and ensures that the
inverter does not connect to the power distribution grid.
Inform your installer.
Stop Operation interrupted.
V‑Const Constant voltage operation.
Waiting The conditions for connecting are not (yet) fulfilled.