Kaco 2901xi Operator Instructions Manual - page 15
KACO
Solar
Inc.
14
Operator’s
Instructions
blue
planet
Error Possible
causes
Remedy/Explanation
The inverter terminates
grid feeding shortly after
starting-up although
there is enough solar
irradiation
- Defective grid isolation
relay in the inverter.
Although there is enough solar irradiation, the inverter delivers
power for a few seconds only and switches off again. During
this short time a grid feeding value between 0 – 5 W is
displayed. If insufficient generator power can be ruled out in this
case the grid isolation relay is presumably defective and
prevents the inverter from being activated.
Grid fuse triggers
- Insufficient grid fuse
rating
- Inverter hardware is
damaged
At times of high solar irradiation the inverter may exceed its
rated current for a short time, depending on the type of solar
generator. Therefore, the grid fuse should have a higher rating
than the max. grid feeding current.
The grid fuse acts immediately if the inverter changes over to
grid feeding (i.e. on termination of the start-up period). In this
case, the inverter hardware is damaged and the device has to
be returned to KACO for repair.
Inverter emits noise
- Special environmental
conditions
Under special environmental conditions the devices may cause
audible noise. This may be due to the following causes:
6 Grid effects and/or grid Errors caused by special consumers
(motors, machines, etc.), which are connected to the same
grid point or which may be installed in the vicinity of the
inverter.
7 Dynamic weather conditions (frequent changes between sun
and clouds) may cause a slight um due to high energy
8 Certain grid conditions may result in grid resonance between
the input filter of the device and the grid, which may continue
to be audible even after the inverter is switched off.
9 People with very sensitive ears (children, in particular) may
perceive high-frequency hum of the inverter, caused by the
operating frequency of 18 kHz.
10 This noise does not affect the operation of the inverter or
inverter performance and will not result in failure, damage or
shorter useful life of the devices.
If any defect found should not be able to be remedied by
means of the measures described above please contact
your solar installation provider or our Service Department.
Please have the following information ready to enable our
Service Department to respond quickly and properly:
Inverter Data:
- Serial number of the device
- Inverter type
- Short description of error
- Is the fault or error reproducible? If so, please provide a
short description.
- Does the fault or error occur sporadically?
- Describe the solar irradiation conditions prevailing when
the error occurred.
- Hour of the day
Solar generator data:
- Module type, manufacturer (please send data sheet, if
available).
- Number of modules connected in series
- Number of strings
- Generator power
7
Recycling and disposal
Both the inverter and associated transport packaging mainly
consist of recyclable raw materials.
Device
Defective inverters and accessories do not belong in your
household garbage. Please ensure that the old device and
any accessories are disposed of according to the applicable
regulations.
Packaging
Please ensure that the transport packaging is disposed of
properly.