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4.6 Status messages
The following table shows the possible status messages, subdivided into four ca-
tegories:
Status message Cause
Startup
LED: Flashing
(green)
Irradiance too low The solar irradiation is too low; feed
mode is not possible
Startup... In this state the inverter checks all
requirements that must be satisfied in
order to enable secure feed mode
Restart in...s After a shutdown this value indicates
the number of seconds after which
feed mode will resume
Mains operation
LED: Green
MPP operation The inverter has found the operating
point of the solar generator with the
maximum inverter output
Maximum power The inverter limits the output to the
maximum power of the device (this
may happen if the solar generator is
oversized)
Mains operation The inverter is connected to the mains
and is operating in feed mode
Idc limitation The inverter limits the solar generator
current to the maximum permissible
value (this may occur if the solar
generator is designed such that the
current at MPP exceeds the maxi-
mum permissible input current of the
inverter)
Iac limitation The inverter limits the mains current
to the maximum permissible value
(this may occur in the event of strong
irradiance fluctuations or if the solar
generator is oversized)
Status message Cause
Malfunction
LED: Orange
Vdc too high The solar generator voltage is too
high
Iac asymmetric The DC component of the mains cur-
rent is too high
Ierr too high A fault current in excess of the
permissible limit value has occurred
on the solar generator side
No mains No mains voltage
Frequency too high The mains frequency is too high
Frequency too low The mains frequency is too low
Mains error A mains fault was detected
Bad mains quality The 10-minutes mean value of
the mains voltage exceeds the
permissible limit value (according to
VDE0126-1-1)
Vac too high The mains voltage is too high
Vac too low The mains voltage is too low
Temp. too high The inverter has interrupted the feed
mode because the heat sink tempera-
ture exceeds 80 °C
(see also section 2.7)
Insulation fault An insulation fault was detected in
the solar generator or in the wiring of
the solar generator
Fault
LED: Flashing (red)
Device error An internal inverter fault has
occurred
Overvoltage The DC link voltage of the inverter is
too high
Overcurrent An overcurrent has occurred in the
inverter
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