For the operator
Operating Instructions
For authorized electricians
Installation Instructions
Instructions begin on page 18
blueplanet 1502x / 2502x
1 About This Documentation ................................................................................4
1.1 Retention of documents ..............................................................................................................4
1.2 Symbols used in this document ....................................................................................................4
1.3 Name plate ................................................................................................................................4
2 Safety Instructions and Regulations ................................................................. 5
3 Notes on Installation and Operation .................................................................5
3.1 Intended use ..............................................................................................................................5
3.2 Factory warranty and liability ......................................................................................................6
3.3 Service .......................................................................................................................................6
4 Operation ............................................................................................................6
4.1 Overview of controls and displays ................................................................................................6
4.2 LED displays ...............................................................................................................................7
4.3 Keys “1” and “2” .......................................................................................................................7
4.4 Level 1 menu – Display mode ......................................................................................................8
4.5 Level 2 menu – Confi guration mode ............................................................................................8
4.6 Night time start switch .............................................................................................................10
4.7 The RS485 interface .................................................................................................................10
4.8 Display .....................................................................................................................................10
5 Accessories ........................................................................................................ 13
6 Troubleshooting ................................................................................................ 14
7 Recycling and Disposal ..................................................................................... 16
blueplanet Operating and Installation Instructions 1502x - 2502x Page 3
About This Documentation
General Notes
By purchasing an inverter from KACO new energy GmbH, you
have opted for a reliable, high-performance technology and
will profi t from KACO new energy’s many years of experience in
the fi eld of current inverter technology and power electronics.
The blueplanet 1502x and 2502x inverters are galvanically
isolated, fanless, robust, high-effi ciency inverters.
1 About This Documenta-
!
CAUTION
CAUTION indicates a hazardous situation which,
if not avoided, could result in minor or moderate
injury.
tion
The following notes guide you through all of the documentation. Additional documents are applicable in conjunction with
these operating and installation instructions.
We assume no liability for any damage caused by failure to
observe these instructions.
NOTICE
Read the manual!
We assume no liability for any damage caused by failure to
observe these instructions.
Other applicable documents
Operators, please read any additional operation instructions
which may have been included with the inverter. Installers,
please refer to the installation manual and any instruction
which may have been included with the inverter for information
regarding installation of the inverter.
1.1 Retention of documents
Please pass these operating and installation instructions on to
the installation operator. These documents must be stored near
the installation and must be available at all times.
NOTICE
Failure to observe a warning indicated in this manner may
lead to damage to property.
NOTE
Useful information and notes.
ACTION
This symbol indicates that a certain action is required.
IMPORTANT
Failure to observe this information may result in reduced
convenience or impaired functionality.
1.2 Symbols used in this
document
When operating the inverter, observe the safety instructions
provided in these operating instructions.
!
DANGER indicates a hazardous situation which, if
not avoided, will result in death or serious injury.
!
WARNING indicates a hazardous situation which,
if not avoided, could result in death or serious
injury.
DANGER
WARNING
Electrical voltage!
Risk of burns!
Read the manual!
1.3 Name plate
The name plate showing the exact designation of the unit is
located on the left side of the housing.
Page 4 blueplanet Operating and Installation Instructions 1502x - 2502x
Safety Instructions and Regulations
2 Safety Instructions and
Regulations
!
DANGER
– Danger due to lethal voltages.
– Lethal voltages are present within the unit and on
the power supply lines. Therefore, only authorized
electricians may install and open the unit.
– Even when the unit is disconnected, high contact
voltages may still be present within the unit.
Accident prevention regulations
Th e inverter must be installed by an authorized elec trician wh o
is responsible for observing existing standards and regulations.
The proper and safe operation of this unit requires proper
transportation, storage, assembly and installation, as well as
careful operation and maintenance.
The inverter may only be operated by persons who have read
and understood the operating instructions.
NOTE
FCC Compliance
NOTE: This equipment has been tested and found to comply
with the limits for a Class B digital device, pursuant to part
15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and
can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause
harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be
determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or
more of the following measures:
– Reorient or relocate the receiving antenna.
– Increase the separation between the equipment and
receiver.
– Connect the equipment into an outlet on a circuit different
from that to which the receiver is connected.
– Consult the dealer or an experienced radio/TV technician
for help.
Modifi cations
It is generally not permitted to make changes to the inverter.
Always consult an authorized electrician for modifi cations to
the installation of the inverter, as they are qualifi ed to undertake such work.
!
CAUTION
Risk of damage due to improper modifi cations.
Never modify or manipulate the inverter or other
components of the installation.
Transportation
The inverter is subjected to extensive testing and inspections
in our test fi eld. This is how we ensure the high quality of our
products. Our inverters leave our factory in proper electrical
and mechanical condition. Special packaging ensures safe and
careful transportation. However, transport damage may still
occur. The shipping company is responsible in such cases.
Thoroughly inspect the inverter upon delivery. Immediately
notify the responsible shipping company if you discover any
damage to the packaging which indicates that the inverter
may have been damaged or if you discover any visible damage
to the inverter.
If necessary, your solar installer or KACO new energy GmbH will
assist you. Damage reports must be received by the shipping
company in writing within six days of receipt of the goods.
3 Notes on Installation
and Operation
3.1 Intended use
The unit converts the DC voltage generated by the photovoltaic
(PV) modules into AC voltage and feeds this into the utility grid.
blueplanet inverters are built according to all required safety
rules. Nevertheless, improper use may cause lethal hazards for
the operator or third parties, or may result in damage to the
units and other property.
The inverter may only be operated with a permanent connection
to the public power grid.
The inverter is not intended for mobile use.
Any other or additional use is not considered the intended use.
The manufacturer/supplier is not liable for damage caused by
such unintended use. Damage caused by such unintended use
is at the sole risk of the operator.
Intended use also includes adherence to the operating and
installation instructions. Your authorized electrician undertakes
the registration with your power supply company and obtains
approval for your photovoltaic installation from the supply
grid operator on your behalf. Some of the documents that you
require in order to register your photovoltaic installation and
have it approved are included in the installation instructions.
When transporting the inverter, the original or equivalent
packaging is to be used, as this ensures safe transport.
blueplanet Operating and Installation Instructions 1502x - 2502x Page 5
Operation
3.2 Factory warranty and
liability
KACO new energy GmbH issues a warranty of ten years or 120
months on the blueplanet inverter starting from the date of
installation, but at most 130 months after shipment by KACO
new energy GmbH.
During this time, KACO new energy GmbH guarantees the
proper function of the units and to undertake repairs at the
factory free of charge in the event of a defect for which we
are responsible.
Contact your specialty dealer or installer if your unit exhibits a
defect or fault during the warranty period.
Warranty claims are excluded in the following cases:
– Use of the units in ways not intended
– Improper installation and installation that does not comply
with standards
–Improper operation
– Operation of units with defective protective equipment
– Unauthorized modifi cations to the units or repair attempts
– Infl uence of foreign objects and force majeure (lightning,
overvoltage, severe weather, fi re)
– Insuffi cient ventilation of the unit
– Failure to observe the relevant safety regulations
– Transport damage
All warranty claims must be handled at the premises of KACO
new energy GmbH. The unit must, where possible, be returned
in its original or equivalent packaging. The costs for these services cannot be borne by KACO new energy GmbH.
!
CAUTION
Incorrect use is prohibited.
4 Operation
The grid-feed process begins in the morning if suffi cient
insolation is available, and, therefore, if a certain minimum
voltage is present in the inverter.
If, as nightfall approaches, the voltage drops below the minimum voltage value, grid-feed mode ends and the inverter
switches off.
4.1 Overview of controls and
displays
1
2
3
4
KACO new energy GmbH will perform warranty services only
if the defective unit is returned to KACO new energy GmbH
together with a copy of the invoice which was issued to the
user by the dealer and the completed warranty card. The name
plate on the unit must be fully legible. If these requirements
are not fulfi lled, KACO new energy GmbH reserves the right to
deny warranty services.
The warranty period for repairs or replacement deliveries is six
months after delivery. However, it continues at least until the
end of the original warranty period for the delivery item.
3.3 Service
We place special emphasis on the quality and longevity of our
inverters, starting with the product development phase. More
than 60 years of experience in the fi eld of power conversion
device manufacturing support our philosophy.
However, despite all quality assurance measures, faults may
occur in exceptional cases. In such cases, KACO new energy
GmbH will provide you with the maximum possible support.
KACO new energy GmbH will make every effort to remedy
such faults in an expeditious manner and without a great deal
of bureaucracy. Contact our service department directly by
telephone at
5
Figure 1: Overview blueplanet
Legend
1 Display
See measured values and confi guration parameters
2 LED displays
Display of the operating state
3 Control keys
Switch between displays and confi guration of
parameters
4 Night time start switch
For activating the display after nightfall
5 GFDI fuse
Ground Fault Detector Interruptor Fuse
+ 1 866 522 6765
Page 6 blueplanet Operating and Installation Instructions 1502x - 2502x
Operation
4.2 LED displays
The inverter is equipped with three LEDs that give information
about the various operating statuses as follows:
ok
1
2
!
3
Figure 2: LED displays
LED (1) (green):
The LED begins to light up when the minimum voltage from a
photovoltaic array is present and goes out again if the array
voltage is lower than the minimum operating voltage. The LED
signals that the inverter is in stand-by mode. If it is illuminated
the inverter is ready for operation or is currently operating.
LED (2) (green):
The LED is lit when the inverter is feeding into the grid.
LED (3) (red):
The LED indicates that the grid-feed was stopped due to a fault.
Wait approx. 10 mins. to see if the fault is temporary. If this is
not the case, notify your authorized electrician.
4.3 Keys “1” and “2”
Figure 3: blueplanet control keys
Key “1” is used to switch between the various displays for
measured values and data. You use key “2” to confi gure
settings. Here, menu navigation is divided into two levels.
In level 1 (display mode), measured values such as the solar
generator voltage can be read. Here, only key “1” is activated.
In level 2 (confi guration mode), key “1” is used to navigate
through the individual displays and settings.
ACTION
By pressing key “1” you can choose which measured value
is to be displayed.
The menus are continuous, which means that when you arrive
at the last entry in a menu, the fi rst entry is displayed again
the next time key “1” is pressed (see Figure 4).
IMPORTANT
If there is a power failure on the public grid, LED (3) does
not light up. If this happens, all LEDs and the display go out.
The inverter is shut down completely.
The inverter can only resume its normal operation when the
public utility grid is available again.
Check whether the fault in question relates to a general power
failure or whether the circuit breaker between the utility service
and the inverter has tripped. If the circuit breaker has tripped,
notify your authorized technician. If there was a power failure,
simply wait until the fault has been cleared. The system
automatically re-starts.
blueplanet Operating and Installation Instructions 1502x - 2502x Page 7
Operation
4.4 Level 1 menu – Display
mode
The display menu is shown once the blueplanet inverter starts
up. Measured values and all of the counters are displayed here.
Key “1” is used to navigate through the individual menu items.
Display of inverter type
Generator voltage and current
Grid voltage, current and power
Daily peak capacity
Temperature inside unit
Counter yield
Yield today
Total yield
(Total) economy of CO
Counter oper. hours
Operating hours today
2
Temperature inside unit
Displays the current heat sink temperature. If the unit becomes
too hot, the unit will reduct power output or switch off.
Counter yield
This counter totals all yields until it is reset. The customer can
confi gure the time periods for this counter, e.g. as a monthly
counter. The counter can be cleared in confi guration mode
“Clear y ield”.
Yield today
The power that has been fed into the grid during the current
day. This value resets to zero each morning.
Total yield
The power that has been fed into the grid since installation
of the inverter. The initial value can be set in confi guration
mode.
(Total) economy of CO
Shows the CO2 savings of this PV installation compared to the
German electricity mix. The CO
total yield counter and can also be cleared with this counter.
Counter oper. hours
This counter totals all yields until it is reset again. The customer can confi gure the time periods for this counter, e.g. as
a monthly counter. It can be cleared in confi guration mode
“Clear y ield”.
Operating hours today
Today’s hours of operation. As soon as the inver ter is in standby mode (i.e. when LED (1) lights up), the running time is added
up.
Total operating hours
The hours of operation since installation of the inverter. As
soon as the inverter is in stand-by mode (i.e. when LED (1)
lights up), the running time is added up.
2
savings are calculated from the
2
Total operating hours
4.5 Level 2 menu –
Confi guration mode
Figure 4: Display mode menu
Explanation of the individual menu items:
Display of inverter type
Inverter type - blueplanet 1502x/2502x display
Generator voltage and current
The current voltage and current of the PV solar generator that
is connected to the inverter.
Grid voltage, current and power
The current line voltage, line current, and the power that is
currently being fed into the power grid.
Daily peak capacity
The respective day’s peak power that was fed into the grid for
a short time.
Page 8 blueplanet Operating and Installation Instructions 1502x - 2502x
To access confi guration mode, press both keys at the same
time. The software version display appears. Pressing key
“1” now switches to the next menu item and changes can
be made in the respective menu item by pressing key “2”.
The setting value increases each time key “2” is pressed.
If the maximum value has been reached, the value returns
to the minimum setting choice.
ACTION
Operation
Software version
Serial number
Current country
Language selection
Clear the grid-feed counter
Defi ne the initial value of the total yield
Select the RS485 address
S0 interface
Quick start
Defi ne the initial value of the total yield
Use this menu setting to defi ne or reset the intial value of the
total yield of the inverter.
Select the RS485 address
If the RS485 interface is activated, you can reach the address
setting by pressing key “1”. By pressing key “2”, the address
can be set in a consecutive manner from 1 to 32.
The address then jumps back to 1. The RS485 interface is used
to communicate with the KACO proLOG, watchDOG or
other monitor. If several inverters are connected to a KACO
proLOG, watchDOG or other monitor each address may
on ly be use d onc e. I t is pos sibl e to mon ito r 32 blu eplanet i nve rters with one KACO proLOG. To connect the RS485 interface,
please contact your installer.
S0 interface pulse rate
The S0 interface is designed as a galvanically isolated transistor
output. This interface is designed according to “DIN 43864 –
Current interface for transmitting pulses from a pulsing meter
to a tariff metering device”.
The S0 interface pulse rate can be chosen in three unit intervals: 500, 1,000 and 2,000 pulses/kWh.
To connect the S0 interface, please contact your installer.
Figure 5: Confi guration mode menu
Explanation of the individual menu
items:
Software version
The current software version is displayed here.
Serial number
Display of the serial number specifi c to the unit.
Current country
Display of the current country settings.
Language selection
The language of the display interface can be selected here.
Clear the grid-feed counter
When you clear the grid-feed counter, all counters (Counter
yield and Counter oper. hours) are reset to zero.
To clear the counters, select “Yes” with key “2”, and confi rm
your selection by pressing the “1” key. The required code is
“2” and is entered using key “2”. By means of an additional
confi rmation with key “1”, all counter are cleared. The display
“Grid-feed counter cleared!” confi rms that the counters have
been cleared.
“Counter yield” and “Counter oper. hours” can be cleared separately from the other counters. These counters are cleared in the
confi guration menu using key 2 and the code 2. ”Counter yield”
and “Counter oper. hours” are always cleared together.
ACTION
Settings are saved only upon exiting confi guration mode.
If 2 minutes elapse without a key being pressed, the
confi guration mode is automatically exited. The confi guration
mod e c an a lso be i mmedi ately exited b y pres sing bo th ke ys .
As a confi rmation, “Settings saved” appears on the display.
The settings are now permanently saved in the blueplanet
inverter.
Quick start
The inverter can also be started up without any waiting period
for the purpose of testing or for the purpose of acceptance by
your power supply company.
If the inverter is already feeding into the grid, this menu item
is not available.
If there is insuffi cient solar generator power, the inverter stops
feeding into the grid after a short period of time.
blueplanet Operating and Installation Instructions 1502x - 2502x Page 9
Operation
4.6 Night time start switch
The unit switches off in the evening as nightfall approaches.
The display is no longer shown. In order to retrieve the values
from the current day (daily yield, daily hours of operation and
max. grid-feed power) after the display switches off, the unit
can be activated during the night by pressing the start switch
at the bottom of the inverter.
ACTION
To do this, press the “4” switch (see Figure Figure 1 – (4))
on the bottom of the inverter for approx. 5 seconds until a
display appears.
You can now scroll through the menu and retrieve the saved
values. If over one minute elapses without a key being pressed,
the unit switches off automatically once again.
The “Counter oper. hours “, “Total operating hours”, “Counter
yield”, and “Total yield” data are permanently saved and
totaled. This data remains in memory even if the inverter is
switched off for a long time. The daily yield, daily hours of
operation and the max. daily grid-feed power are available
until the following morning and are cleared when PV generator
voltage is present again.
4.7 The RS485 interface
Blueplanet inverters are also equipped with an RS485 interface
in order to enable remote monitoring of your photovoltaic installation. Several inverters can be monitored over this interface
at the same time. Using the KACO proLOG, watchDOG
or other monitoring device you can receive yield and operating
da ta as wel l as erro r me ssage s by S MS (tex t messa ge) or e -mai l.
These monitoring options are especially recommended for situations where you are unable to check the functionality of the
installation on-site at regular intervals, e.g. if you live far away
from the installation site. Contact your installer if you wish to
integrate remote monitoring into your system.
4.8 Display
Inverters in the blueplanet series are equipped with a back-lit
LCD (see fi gure Figure 1 – (1) which displays measured values
and data.
In normal mode, the backlighting is switched off. As soon
as you press one of the keys, the backlighting is activated.
If approx. 1 minute elapses without a key being pressed,
it switches off once again.
NOTE
Calculating effi ciency by measuring the current and voltage
values leads to unusable results due to the tolerances of the
measuring devices. The sole purpose of these values is to
monitor the basic operation of the system.
IMPORTANT
Due to measuring tolerances, the measured values may
not always correspond to the actual values. The inverter’s
measuring elements have been selected to ensure maximum solar yields. Due to these tolerances, the daily yields
displayed on the inverter may deviate from the values on
you r suppl y grid o pe rato r’s g rid-fe ed coun ter by up to 15 %.
At low power operation the sensors within the unit are not
as accurate as when at higher power therefore long term
operation may cause this high deviation. Under normal
operating conditions this deviation is minimal.
Page 10 blueplanet Operating and Installation Instructions 1502x - 2502x
Operation
Operating States
Status Explanation Comment
0 Inverter has just switched on Only for a brief period after being fi rst switched on in the morning.
1 Waiting to start Grid parameters and generator voltage are checked.
2 Waiting to switch off tus before it switches over to night shutdown mode.
3 Constant voltage regulator The inverter continues to operate with minimum MPP voltage when the grid-
feed power is low.
5 Grid-feed mode The inverter is feeding into the grid.
8 Self test The line relay and the shutdown of the power electronics are tested prior to the
commencement of grid-feed mode.
9 Test mode For internal operation only.
11 Power limitation If the generator is producing too much power, the inverter limits to the max.
power. This can occur in the midday hours if the generator has been too largely
dimensioned. This is not a malfunction.
60 PV voltage is too high for feeding into
the grid
64 Output current limit The AC current is limited once the specifi ed maximum value has been reached.
Protective function of the inverter. The inverter can only begin feeding into the
grid once the PV voltage falls below a specifi ed value. The PV voltage is below
the maximum permissible no-load voltage, this status is not an error.
Table 1: Explanation of the operating states
Fault signals
When these error messages are displayed, the grid-feed is interrupted, the red LED (3) lights up, and the fault signal relay has
switched. This error correction takes a country-specifi c length
of time (see Installation Instructions, section 3, Technical Data).
Afterwards the red fault LED (3) goes out, the fault signal relay
drops out again, and the display signals that it is ready to feed
into the grid once again. Once the fault is gone, the blueplanet
inverter feeds in again.
Many of these fault signals point to a fault in the grid, and
are, therefore, not an operational fault on the part of the blueplanet inverter. The minimum triggering levels are determined
by applicable standards (e.g. VDE0126-1-1 or UL 1741), and the
inverter must switch off if the permitted values are exceeded.
blueplanet Operating and Installation Instructions 1502x - 2502x Page 11
Operation
Status Display Explanation
10 Temperature too high inside The temperature in the unit has become too high (> 176 °F). When the internal
reaches 158 °F, the inverter limits the power. An internal temperature of 176 °F
is only reached if convection cooling is impeded by external factors, e.g. by
covering the cooling fi ns.
29 Error GFDI - Check Fuse! A ground fault was detected on the DC side. Notify your authorized electrician
so that the solar generator can be checked.
30 Error Measurement The current and voltage measurements in the inverter are not plausible. This
can be caused by very dynamic weather conditions if there are quick changes
between low grid-feed power (e.g. 200 W) and high grid-feed power (e.g. the
maximum grid-feed power).
32 Error Selftest The internal grid separation relay test has failed. If this internal error occurs
several times, notify your authorized electrician.
33 Error DC-gridfeeding The DC feed into the grid has exceeded the permitted limit value. This grid-feed
can be impressed from the grid on the blueplanet inverter so that no inverter
fault exists. If this error occurs several times, notify your authorized electrician.
34 Error Communication A communication error has occurred in the internal data transmission. If this
error occurs several times, notify the service department.
35 Protection
shutdown
36 Protection
shutdown HW
38 Failure
PV-Overvoltage
41 Line failure
Undervoltage
42 Line failure
Overvoltage
48 Line failure
Underfrequency
49 Line failure
Overfrequency
50 Line failure average value voltage The average value of the EN50160 voltage measurement is above the set shut
51 Line failure overvoltage L1 Phase voltage L1 is above the set maximum phase voltage.
52 Line failure undervoltage L1 Phase voltage L1 is below the set maximum phase voltage.
53 Line failure overvoltage L2 Phase voltage L2 is above the set maximum phase voltage.
54 Line failure undervoltage L2 Phase voltage L2 is below the set maximum phase voltage.
55 Error DC link The voltage at the DC link is too high, or the DC link cannot be charged (IGBT
57 Waiting for reactivation Waiting for reactivation after an error.
58 Overtemperature
controlling unit
59 Error self test An error occurred during the buffer inspection.
66 Fault in voltage
transformer
Internal error EPROM An error occurred in the EPROM.
No parameters Error, no parameters.
Protection shutdown of the software (AC overvoltage, AC overcurrent, DC link
overvoltage). This is not an error, but instead a grid-related shutdown.
Protection shutdown of the hardware (AC overvoltage, AC overcurrent, DC link
overvoltage). This is not an error, but instead a grid-related shutdown.
The voltage of the PV generator is too high. The solar generator is wrongly
dimensioned. Notify your authorized electrician.
The voltage of the grid-feed phase is too low. The grid cannot be fed into. This
error can be grid-related.
The voltage of the grid-feed phase is too high. The grid cannot be fed into. This
error can be grid-related.
The line frequency is too low. This error can be grid-related.
The line frequency is too high. This error can be grid-related.
down value.
damage).
The temperature is too high. To avoid damage, the grid-feed was stopped.
Provide for suffi cient ventilation.
Error of plausibility
Plausibility check of the ADC-check between ARM and DSP failed.
Table 2: Fault signals
Page 12 blueplanet Operating and Installation Instructions 1502x - 2502x
Accessories
5 Accessories
KACO offers its customers a comprehensive range of helpful
accessories. The array of products includes monitoring, display,
visualisation and data transmission equipment of the highest
quality.
KACO-proLOG
Are you looking for professional monitoring and data logging
equipment? The KACO-proLOG is the high-end solution for
your PV installation. Error messages by SMS (text message), fax
or e-mail, remote access to the installation, the presentation
of the PV installation on the Internet and much more are
no problem whatsoever for the KACO-proLOG. Up to 32
inverters can be connected to the KACO-proLOG via the
RS485 interface.
KACO-watchDOG
The KACO-watchDOG card is the integrated communication
option from KACO for monitoring your PV installation. Up to
three inverters can be monitored with one affordable card.
The KACO-watchDOG can be installed inside the blueplanet
inverter in a few easy steps. For more about the functions and
installation of the KACO-watchDOG and KACO-proLOG
please visit www.kacosolar.com where you may download the
installation manuals for all KACO products.
You can access your PV data at:
www.kaco-newenergy.com/blueplanetweblogin.php
Figure 6: KACO-proLOG
Figure 7: KACO-watchDOG
Information about additional accessories can be found in our
general catalogue, price list and website.
blueplanet Operating and Installation Instructions 1502x - 2502x Page 13
Troubleshooting
6 Troubleshooting
In line with our continuously expanding quality assurance system, we endeavor 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 behavior 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 monitor the inverter closely and, where applicable, make a note of the displays and LEDs. The next step is to contact
your installer and explain the problem encountered.
The following faults may occur and should be remedied as described.
Error Cause of error Troubleshooting/Explanation
Inverter displays an impossible daily peak value.
Daily energy yields do not
correspond with the yields
on the energy supply company’s grid-feed counter.
The display is blank and the
LEDs are not lighting up.
The inverter is active but
does not feed into the grid.
The inverter is active but
does not feed into the grid.
The insolation is suffi cient.
Faults in the line voltage. The inverter continues to operate as normal 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 the grid and switched on again.
Tolerances of the measuring
elements in the inverter.
– The unit is in night shut-
down mode.
– There is no AC line voltage.
– The solar generator voltage
is too low.
– External DC switch is OFF
(0).
– Insuffi cient generator volt-
age available.
– The line voltage or the solar
generator voltage is not
stable.
The inverter has interrupted
the grid-feed due to a fault.
The measuring sensors of the inverter have been selected to ensure
maximum solar yields.
Due to these tolerances,
the daily yields displayed on the inverter may deviate from the values
on your supply grid operator’s grid-feed counter by
up to 15 %, especially if operating at very low power for extended
periods of time. (see section 4.8)
The inverter switches to night shutdown mode as soon as the solar
generator voltage is below the minimum grid-feed voltage for a
longer period of time. In this case, the display will also switch off. In
order to still be able to view the currently measured values, you can
switch on the inverter via the night start-up key.
A grid failure will also cause the display to go blank and the grid-feed
to stop. Wait until the public utility grid is available again.
Also check if the external DC switch is OFF (0) and if so, switch it to
ON (1).
If the display does not light up during normal daytime hours, please
contact your solar installer.
After sunrise, at sunset and when there is not enough solar insolation
due to bad weather conditions or due to the solar modules being
covered with snow, the generator voltage or the generator power
that comes from the roof may be too low to be able to feed in.
Before the grid-feed process begins, the inverter has to check the line
parameters for a certain period of time. The length of the switch-on
time differs by country according to applicable standards and regulations and can take several minutes.
After an interruption of the grid-feed due to a fault (line failure, overtemperature, overload, etc.), the inverter checks the line parameters
for certain period of time. The length of time it takes to switch back
on again differs by country according to applicable standards and
regulations and can take several minutes.
With faulty grids, interruptions can occur 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).
For an explanation of the individual display error texts, please see the
fault signals.
Page 14 blueplanet Operating and Installation Instructions 1502x - 2502x
Troubleshooting
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.
Noise emission from the
Particular ambient conditions. When there are certain ambient conditions, the units may emit
inverter.
In spite of high insolation,
the inverter does not feed
Unit is too hot and
the power is reduced.
in the maximum power into
low-voltage grid.
Table 3: Troubleshooting
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.
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.
The temperature inside the unit became too high. The inverter
reduced the power to prevent damage to the unit. Above an internal
temperature of 167 °F, the inverter limits the power and levels off at
a temperature of 185 °F. An internal temperature of 185 °F 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.
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 photovoltaic module
– Module type, manufacturer (if available, also send the
data sheet)
– The number of modules in series
– The number of strings
– Generator power
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
blueplanet Operating and Installation Instructions 1502x - 2502x Page 15
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