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Installation Instructions Powador 1501xi/2501xi*/3501xi/4501xi/5001xi**_EN
S e c t i o n 8 ·
T r o u b l e s h o o t i n g
8 Troubleshooting
In line with our continuously expanding quality assurance system, we endeavour to eliminate all errors and faults. You have purchased
a product which left our factory in proper condition. Each individual unit has successfully passed an endurance test as well as extensive
tests for the purpose of assessing the operating behaviour and the protective equipment.
If your photovoltaic installation does not function properly despite these measures, we suggest the following troubleshooting
procedures:
The fi rst step is to check that the solar generator and grid connections are properly connected to the Powador. In doing so, observe all the
safety instructions specifi ed in this manual. Monitor the inverter closely and, where applicable, make a note of the displays and LEDs.
The following faults may occur and should be remedied as described (see table 8.1, Fault causes).
Fault
Cause of fault
Troubleshooting/Explanation
Inverter displays an
impossible daily peak
value.
Faults in the line voltage.
Inverter continues to operate normally, without losses to the
yield, even when an erroneous daily peak value is displayed.
The value is reset overnight. To immediately reset the value,
the inverter must be switched off and switched on again by
disconnecting it from the grid.
Daily energy yields do
not correspond with the
yields on the grid opera-
tor’s grid feed meter.
Tolerances of the meas-
uring elements in the
inverter.
A measurement error occurs due to the measuring elements
tolerances. The daily energy yield may deviate from the yield on
the grid feed meter by up to 15 %, and even more in cases of
low insolation.
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.
The line fuse immediately trips when the inverter switches to
grid feed mode (after the start-up period is complete). In such a
case, there is damage to the inverter’s hardware. The unit must
be repaired by KACO new energy GmbH.
The display is blank.
The unit is in night
–
shutdown mode
There is no line voltage
–
The solar generator volt-
–
age is lower than 100 V.
The inverter switches off overnight.
If the display does not light up during the daytime, check the
grid feed meter to see if the grid is nevertheless being fed into. If
power is being supplied to the grid, the display module is faulty.
The inverter must be repaired by KACO new energy GmbH. If
power is not being supplied to the grid, check to see if there
is any line voltage and if the solar generator voltage is greater
than 125 V. If both are the case and the inverter still does not
feed into the grid, the unit must be repaired by KACO new
energy GmbH.
The inverter will not
start.
The unit is in night
–
shutdown mode
There is no line voltage
–
The solar generator volt-
–
age is lower than 100 V.
The inverter switches off overnight.
If the display does not light up during the daytime, check the
grid feed meter to see if the grid is nevertheless being fed into. If
power is being supplied to the grid, the display module is faulty.
The inverter must be repaired by KACO new energy GmbH. If
power is not being supplied to the grid, check to see if there
is any line voltage and if the solar generator voltage is greater
than 100 V. If both are the case and the inverter still does not
feed into the grid, the unit must be repaired by KACO new
energy GmbH.
The inverter is active but
does not feed into the
grid. The display shows:
Start at 125 V meas.
xxx V
Insuffi cient generator
voltage available. The
measured voltage is lower
than 125 V.
After sunrise, at sunset and when there is insuffi cient 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.
