KACO blueplanet 6400xi - Manual (Page 14)

blueplanet Operating and Installation Instructions 6400xi - 7600xi Page 15
S e c t i o n 6 · T r o u b l e s h o o t i n g
Error Cause of error Troubleshooting/Explanation
The inverter stops
supplying power to
the grid shortly after
being switched on, even
though there is suffi cient
sunlight. Faulty grid separation relay
in the inverter. Although there is suffi cient sunlight, the inverter feeds into the
grid only for a few seconds before switching off again. During the
short grid-feed period, the inverter shows that the power being
fed into the grid is between 0 and 5 W. If the inverter is defi nitely
receiving suffi cient generator power, the grid separation relay is
presumably faulty, thus preventing the inverter from connecting.
Please contact your solar installer.
The line fuse trips. The line fuse capacity is too
low.
Damage to the inverter’s
hardware. In cases of high insolation, the inverter can – depending on the
solar generator – exceed its rated current for a short period. For
this reason, the capacity of the inverter’s pre-fuse should be
somewhat higher than the maximum grid-feed current.
If the line fuse immediately trips when the inverter switches to grid-
feed mode (after the start-up period is complete), the inverter’s
hardware is probably damaged. Contact your solar installer.
Noise emission from the
inverter. Particular ambient
conditions.
Power boost mode is
active. When there are certain ambient conditions, the units may
emit audible noises. The following causes may be determining
factors in this regard:
– Line interference or line failure caused by particular loads
(motors, machines, etc.) which are either connected to the same
point on the grid or located in the vicinity of the inverter.
– In cases of dynamic weather conditions (frequent switching
between sunny and cloudy conditions) or strong solar
insolation, a light hum may be audible due to the high
output.
– With particular grid conditions, resonances may form between the
unit’s input fi lter and the grid, which may be audible even when
the inverter is switched off.
– People with very sensitive hearing (particularly children) may be
able to hear the high-frequency hum caused by the inverter’s
operating frequency of approx. 17 kHz.
Such noise emissions do not affect the operation of the inverter.
Nor can they lead to loss of effi ciency, failure, damage or to a
shortening of the unit’s service life.
When the power boost mode is activated, the operating fre-
quency of the inverter changes to 9 kHz. The operating fre-
quency of 9 kHz causes a noise emission from the inverter.
In spite of high
insolation, the inverter
does not feed in the
maximum power into
low-voltage grid. Unit is too hot and
the power is reduced. The temperature inside the unit became too high. The inverter
reduced the power to prevent damage to the unit. Above an
internal temperature of 158 °F, the inverter limits the power
and levels off at a temperature between 158 °F and 176 °F.
An internal temperature of 185 °C is only reached if convection
cooling is impeded by external factors, e. g. by covering the
cooling fi ns. Provide for suffi cient cooling of the unit.
Table 6.1: Troubleshooting
If the measures described in this guide do not assist in clearing the fault, please notify your installer.
In order for our factory customer service department to respond in an appropriate and expeditious manner, some details are imperative:
Details pertaining to the inverter
– The unit’s serial number
– Model
– A short description of the error
– Is the error reproducible? If yes, how?
– Does the error occur sporadically?
– Describe the prevailing insolation conditions
when the error occurred?
– Time of day
Details pertaining to the photovoltaic module
– Module type, manufacturer (if available, also send the
data sheet)
– The number of modules in series
– The number of strings
– Generator power