Operation
NT 10000...NT 12000 51
225:UV excon
226:OV excon
Your Solar Inverter is equipped with a
high-quality redundant grid monitoring
function according to DIN V VDE 0126-1-1
and constantly monitors the grid. If one
of the phases fails, or if the phase positi-
on between the individual conductors
changes, the Solar Inverter stops feeding
and does not start up again until the er-
ror is eliminated.
Check phases L2 and L3.
Ask your power supply company
(PSC) about grid stability and design.
227:L1 Your Solar Inverter continuously moni-
tors the output current. Excessive current
rise was detected.
Ask your power supply company
(PSC) about grid stability and design.
Inverter fault
301:AFI over The integrated sensor for measuring the
residual current has been operated out-
side its measuring range.
A residual current was detected during
start-up.
Restart the Solar Inverter.
If the error still occurs, please contact the
Technical Hotline. The phone number is
provided on the back of the manual.
303:Overtmp. Your Solar Inverter is designed for an am-
bient temperature of up to +40?. When a
specified temperature threshold of the
heat sink is reached, the feed line is line-
arly reduced in size. Should the heat sink
temperature nevertheless continue to in-
crease, feeding is stopped. After the heat
sink temperature drops, the Solar Inverter
starts up again automatically.
The maximum permissible ambient tem-
perature has been exceeded.
The installation location is not suitab-
le. Please find another installation lo-
cation.
The air circulation requirement was not
taken into account during installation.
Clean the Solar Inverter, if dirt pre-
vents cooling.
Observe the installation distances
specified in the manual.
Objects were laid on the heat sink and
unimpaired convection was prevented.
Remove the objects.
304:Grid re. The NT Solar Inverter always checks the
function of the mains relay before it is
switched on. An error was detected du-
ring this check.
Restart the Solar Inverter.
If the error still occurs, please contact the
Technical Hotline. The phone number is
provided on the back of the manual.
305:AFI test The NT Solar Inverter always checks the
function of its residual-current monito-
ring unit before it is switched on. An error
was detected during this check.
Restart the Solar Inverter.
If the error still occurs, please contact the
Technical Hotline. The phone number is
provided on the back of the manual.
Display message Description Cause and possible remedies
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