Kaco 2901xi Operator Instructions Manual - page 14
KACO
Solar
Inc.
13
Operator’s
Instructions
blue
planet
6 Troubleshooting
Within the scope of our continuously expanding Quality
Assurance System, our goal is to rule out and eliminate any
faults and defects. You have purchased a product that has
left our factory in proper condition. Each individual inverter
has successfully passed extensive inspection tests for
proper operation and functioning of protective devices, as
well as a lengthy endurance test at our factory.
Should your PV installation not work properly despite all
these measures, we recommend the following procedure for
remediation:
Check the solar generator and grid connections leading to
the inverter, observing all the safety instructions given in this
manual. Please observe the inverter carefully and take note
of the display messages and LED displays.
Below is a summary of possible errors and recommended
remedies:
Table 6-1: Troubleshooting Guide
Error Possible
causes
Remedy/Explanation
Inverter shows an
unrealistic daily peak
value
- Grid voltage failure
Even if an incorrect daily peak value is displayed the inverter
continues to work properly and without any yield losses. Values
are reset overnight. If you wish to reset the display immediately,
disconnect the inverter from the DC grid voltage supply and
switch on the inverter again.
Daily yield values do not
correspond to the values
shown on the power
meter of the Utility
company.
- Tolerances of the
inverter’s internal
measuring elements
Measuring errors are caused by tolerances of the measuring
elements. The tolerances of the individual measuring values are
shown in Table 4-3, Display Operation and Settings. The daily
yield value may deviate from the value shown on the power
meter by up to 15%.
No display shown
- Device is in the night
shut-down mode
- No grid voltage is
present
- Solar generator voltage
is less than 110V
The inverter shuts down over night.
If the display should not be illuminated during a normal time of
the day you should check on the power meter whether or not the
device delivers power. If power is delivered the display module is
defective, and the inverter has to be returned to KACO for repair.
If no power is delivered you should check that grid voltage is
present and that the solar generator voltage is higher than 125V.
If this is the case but the inverter still fails to deliver power the
device has to be returned to KACO for repair.
Inverter does not start
- Device is in its night
shut-down mode
- No grid voltage is
present
- The solar generator
voltage is less than
125V
The inverter shuts down over night.
If the display should not be illuminated during a normal time of
the day you should check on the power meter whether or not the
device delivers power. If power is delivered the display module is
defective and the inverter has to be returned to KACO for repair.
If no power is delivered you should check that grid voltage is
present and that the solar generator voltage is higher than
125 V.
If this is the case but the inverter still fails to deliver power the
device has to be returned to KACO for repair.
Inverter is active but
does not deliver power –
the display reads: Start
from 125V
Measurement:
xxx V
- Insufficient generator
voltage. Voltage
measured < 125V
After sunrise, at sunset, and during times of low solar irradiation
due to bad weather conditions the generator voltage or,
respectively, generator power fed from the roof may be
insufficient for grid feeding
Inverter is active but
does not deliver power –
the display reads:
Start from 125V
Measurement:
xxx V (measured voltage
is higher than 125V)
- The inverter has
interrupted grid feeding
due to a
malfunction/Error.
After an interruption of grid feeding due to a malfunction (grid
power failure, overtemperature, overload, etc.) the inverter
always waits for approx. 5 minutes before resuming its grid
feeding operation. Grid failures may cause interruptions during
the day. If more than 10 interruptions should occur over several
weeks you should contact your solar installation provider.
Warning!
These servicing instructions are for use
by qualified personnel only. To reduce
the risk of electric shock, do not
perform any servicing other than that
specified in the operation instructions.
Warning