84
Malfunction Description Remedies
303:Overtmp. Your solar inverter is designed
for an ambient temperature of
up to +40°C. When a specified
temperature threshold of the
heat sink is reached, the output
power is reduced linearly.
Should the heat sink tempera
-
ture nevertheless continue to
increase, feeding is stopped.
After the heat sink tempera
-
ture drops, the solar inverter
starts up again automatically.
The maximum permissible
ambient temperature has been
exceeded.
➡ The installation location
is not suitable. Please find
another installation location.
The necessary air circulation
was not taken into account
during installation.
➡ Clean the solar inverter, if
dirt prevents cooling.
➡ Observe the installation
distances specified in the
manual.
Objects were laid on the heat
sink and unimpaired convec
-
tion was prevented.
➡ Remove the objects.
84
Malfunction Description Remedies
304:Mains rel. The AT solar inverter checks the
operation of the mains relay
prior to every switch-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.
305:AFI Test The AT solar inverter checks the
operation of its residual-cur
-
rent monitoring unit prior to
every switch-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.
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