Kaco Powador 2500xi Operating Instructions Manual - page 15
Page 16
Operating Instructions Powador 2500xi / 3600xi / 4000xi / 4500xi / 5000xi_EN
S e c t i o n 5 ·
T r o u b l e s h o o t i n g
The inverter is active
but does not feed to
the grid. Display shows:
Start at 410 V meas.:
xxx V
Not enough generator vol-
tage available. The measu-
red voltage is lower than
410 V
After sunrise, at sunset and when there is not enough solar inso-
lation due to bad weather conditions, the generator voltage or
the generator power that comes from the roof may be too low
to be able to feed in. If the inverter has switched off because
the power is too low, it waits a country-specifi c length of time
(see Installation Instructions, section 4, Technical Data) before
attempting to feed in once again.
The inverter is active
but does not feed in –
the display shows: Start
at 410 V meas.: xxx V
(measured voltage is
greater than 410 V
The inverter has interrupted
the grid feed due to a fault.
After an interruption to the grid feed due to a fault (line fault,
overtemperature, overload, etc.), the inverter waits a country-
specifi c length of time (see Installation Instructions, section 4,
Technical Data) before switching over to grid feed mode. With
faulty grids, the inverters may even shut down during the day.
Notify your solar installer if the inverter shuts down regularly
over a period of several weeks (more than 10 times per day
with error messages).
The inverter stops the
grid feed mode shortly
after being switched on,
although there is suf-
fi 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 a fed power of
between 0 and 5 W. If the inverter is defi nitely receiving suf-
fi cient generator power, the grid separation relay is presumably
faulty, thus preventing the inverter from connecting.
Noise emission from the
inverter.
Unusual ambient condi-
tions
When there are unusual ambient conditions, the units may emit
audible noises. The following reasons may be determining fac-
tors:
–
Line interference or a line failure caused by particular loads
(motors, machines, etc.) that are either connected to the
same point on the grid or may be spatially situated nearby.
–
In cases of dynamic weather conditions (frequent switching
between sunny and cloudy conditions) or strong insolation, a
light hum may be audible due to the increased power.
–
With particular grid conditions, resonances may form between
the unit’s input fi lter and the grid which may even be audible
when the inverter is switched off.
–
For people with very sensitive hearing (particularly children), it
is possible that the high-frequency hum caused by the invert-
er’s operating frequency of approx. 18 kHz is audible. Such
noise emissions do not affect the operation of the inverter.
They also cannot lead to reduced effi ciency, failure, deterio-
ration or a shortening of the unit’s service life.
Table 5.1: Troubleshooting
If the measures described in this guide do not assist in clearing
the fault, please notify your installer.
In order to enable our factory customer support team 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 fault
–
Is the error or fault reproducible? If yes, how?
–
Does the error or fault occur sporadically?
–
What type of insolation conditions existed?
–
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