The information contained in these documents is property of SMA Solar Technology AG. Any
publication, whether in whole or in part, requires prior written approval by SMA Solar Technology
AG. Internal reproduction used solely for the purpose of product evaluation or other proper use is
allowed and does not require prior approval.
SMA Warranty
You can download the current warranty conditions from the Internet at www.SMA-Solar.com.
Trademarks
All trademarks are recognized, even if not explicitly identified as such. A lack of identification does
not mean that a product or symbol is not trademarked.
The BLUETOOTH® word mark and logos are registered trademarks of BluetoothSIG,Inc. and any
use of these marks by SMASolarTechnologyAG is under license.
Modbus® is a registered trademark of Schneider Electric and is licensed by the Modbus
Organization, Inc.
QR Code is a registered trademark of DENSO WAVE INCORPORATED.
Phillips® and Pozidriv® are registered trademarks of Phillips Screw Company.
Torx® is a registered trademark of Acument Global Technologies, Inc.
This document describes how to rectify certain errors and how to replace defective components.
This document supplements the documents that are enclosed with each product and does not
replace any locally applicable standards or directives. Read and observe all documents supplied
with the product.
This document is valid for the following device types:
• STP 15000TL-10 (Sunny Tripower 15000TL)
• STP 17000TL-10 (Sunny Tripower 17000TL)
1.2Target Group
The tasks described in this document must only be performed by qualified persons. Qualified
persons must have the following skills:
• Knowledge of how an inverter works and is operated
• Training in how to deal with the dangers and risks associated with installing and using
electrical devices and installations
• Training in the installation and commissioning of electrical devices and installations
• Knowledge of the applicable standards and directives
• Knowledge of and compliance with this document and all safety information
1.3Symbols
SymbolExplanation
Indicates a hazardous situation which, if not
avoided, will result in death or serious injury
Indicates a hazardous situation which, if not
avoided, can result in death or serious injury
Indicates a hazardous situation which, if not
avoided, can result in minor or moderate injury
Indicates a situation which, if not avoided, can
result in property damage
Information that is important for a specific topic
or goal, but is not safety-relevant
Indicates a requirement for meeting a specific
goal
Desired result
A problem that might occur
Service ManualSTP15-17TL-10-SG-en-104
Page 5
SMA Solar Technology AG
1 Information on this Document
1.4Nomenclature
Complete designationDesignation in this document
SunnyTripowerInverter, product
ElectronicSolarSwitchESS
SMA BLUETOOTH Wireless TechnologyBLUETOOTH
Service Manual5STP15-17TL-10-SG-en-10
Page 6
2 Safety
SMA Solar Technology AG
2Safety
2.1Safety Information
This section contains safety information that must be observed at all times when working on or with
the product.
To prevent personal injury and property damage and to ensure long-term operation of the product,
read this section carefully and observe all safety information at all times.
Danger to life due to high voltages of the PV array
When exposed to sunlight, the PV array generates dangerous DC voltage which is present in the
DC conductors and the live components of the inverter. Touching the DC conductors or the live
components can lead to lethal electric shocks. If you disconnect the DC connectors from the
inverter under load, an electric arc may occur leading to electric shock and burns.
• Do not touch uninsulated cable ends.
• Do not touch the DC conductors.
• Do not touch any live components of the inverter.
• Have the inverter mounted, installed and commissioned only by qualified persons with the
appropriate skills.
• If an error occurs, have it rectified by qualified persons only.
• Prior to performing any work on the inverter, disconnect it from all voltage sources as
described in this document (see Section2.2 "Disconnecting the Inverter from Voltage
Sources", page7).
Danger to life due to electric shock
Touching an ungrounded PV module or array frame can cause a fatal electric shock.
• Connect and ground the PV modules, array frame and electrically conductive surfaces so
that there is continuous conduction. Observe the applicable local regulations.
Risk of burns due to hot enclosure parts
Some parts of the enclosure can get hot during operation.
• Do not touch any parts other than the lower enclosure lid of the inverter during operation.
Service ManualSTP15-17TL-10-SG-en-106
Page 7
SMA Solar Technology AG
Damage to the seal of the enclosure lids in subfreezing conditions
If you open the upper and lower enclosure lids in subfreezing conditions, the seals on the
enclosure lids can be damaged. This can lead to moisture entering the inverter.
• Do not open the inverter at ambient temperatures lower than -5°C.
• If a layer of ice has formed on the seal of the lid in subfreezing conditions, remove it prior to
opening the enclosure lids of the inverter (e.g. by melting the ice with warm air). Observe the
applicable safety regulations.
Damage to the display or the type label due to the use of cleaning agents
• If the inverter is dirty, clean the enclosure, the enclosure lid, the type label, the display and
the LEDs with a damp cloth only.
2.2Disconnecting the Inverter from Voltage Sources
Prior to performing any work on the inverter, always disconnect it from all voltage sources as
described in this section. Always adhere to the prescribed sequence.
Destruction of the measuring device due to overvoltage
• Only use measuring devices with a DC input voltage range of 1,000 V or higher.
2 Safety
Procedure:
1. Disconnect the circuit breaker from all three line conductors and secure against reconnection.
2. If the multifunction relay is used, switch off any supply voltage to the load.
3. Test whether there is an acoustic signal.
If an acoustic signals sounds and the display shows an error message that prohibits
disconnecting the ESS, wait until dark. The ESS can only be disconnected once it is dark.
If no acoustic signal sounds and the display does not show an error message, remove the ESS.
4. Wait until the LEDs and the display have gone out.
5. Remove all six screws from the lower enclosure
lid using an Allen key (AF3).
Service Manual7STP15-17TL-10-SG-en-10
Page 8
2 Safety
SMA Solar Technology AG
6. Flip the lower enclosure lid up and remove it.
7.
Risk of burns when touching the DC protective cover
The DC protective cover can get hot during operation.
• Do not touch the DC protective cover.
8. Use an appropriate measuring device to ensure that no voltage is present at the AC
connecting terminal plate between L1 and N, L2 and N, and L3 and N. Insert the test probe
into each round opening of the terminal.
9. Use an appropriate measuring device to ensure that no voltage is present at the AC
connecting terminal plate between L1 and PE, L2 and PE, and L3 and PE. Insert the test
probe into each round opening of the terminal.
10. If you are using the multifunction relay, ensure that no voltage is present between any of the
terminals on the multifunction relay and PE on the AC connecting terminal plate.
11. Use a current clamp to ensure that no current is present in the DC cables.
12. Release and remove all DC connectors. To do this, insert a flat-blade screwdriver or an angled
screwdriver (blade width: 3.5mm) into one of the side slots and pull the DC connectors
straight out. Do not pull on the cable.
13.
Danger to life due to high voltages in the inverter
The capacitors in the inverter take 20minutes to discharge.
• Wait 20minutes before opening the upper enclosure lid.
• Do not open the DC protective cover.
14.
Damage to the inverter due to electrostatic discharge
Touching electronic components can cause damage to or destroy the inverter through
electrostatic discharge.
• Ground yourself before touching any component.
Service ManualSTP15-17TL-10-SG-en-108
Page 9
SMA Solar Technology AG
3 Cleaning the Inverter
3Cleaning the Inverter
Damage to the display or the type label due to the use of cleaning agents
• If the inverter is dirty, clean the enclosure, the enclosure lid, the type label, the display and
the LEDs with a damp cloth only.
Service Manual9STP15-17TL-10-SG-en-10
Page 10
4 Troubleshooting
SMA Solar Technology AG
4Troubleshooting
4.1LED Signals
The LEDs indicate the operating state of the inverter.
LEDStatusExplanation
Green LEDglowingFeed-in operation
If an event occurs during feed-in operation, an event message will be shown on the display (for event messages see
the service manual at www.SMA-Solar.com).
flashingThe conditions for feed-in operation are not yet met. As
soon as the conditions are met, the inverter will start feedin operation.
Red LEDglowingError
If an error occurs, the error message and the corresponding event number will be shown in the display. The error
must be rectified by a qualified person (for troubleshooting, see the service manual at www.SMA-Solar.com).
Blue LEDglowingBLUETOOTH communication is activated.
4.2Event Messages
Display messageCause
Self-testThe self-test is in progress.
Set parameterThe parameter changes are being adopted.
Parameters set successfullyThe parameter changes were successfully adopted.
Update file OKThe update file found is valid.
SD card is readThe SD memory card is searched for update files and the update file
is checked.
No new update SD cardThe SD memory card contains an update file that has already been
used.
Update communicationThe inverter is performing an update of the communication compo-
nent.
Update main CPUThe inverter is updating the inverter component.
Update RS485I moduleThe inverter is updating the corresponding component.
Update SpeedwireThe inverter is updating the corresponding component.
Webconnect updateThe inverter is updating the corresponding component.
Update BluetoothThe inverter is updating the corresponding component.
Service ManualSTP15-17TL-10-SG-en-1010
Page 11
SMA Solar Technology AG
Display messageCause
Upd. language tableThe inverter is updating the corresponding component.
Update displayThe inverter is updating the corresponding component.
Update String prot.The inverter is updating the corresponding component.
Update completedThe inverter has successfully completed the update.
Grid param. unchangedThe parameters are locked and you cannot change them.
Inst. code validThe entered GridGuard code is valid. Protected parameters have
now been unlocked and you can adjust the parameters. The param-
eters will be automatically locked again after tenfeed-in hours.
4 Troubleshooting
4.3Error Messages
Event numberDisplay message, cause and corrective measures
101 to 103
Grid fault
The grid voltage or grid impedance at the connection point of the inverter is
too high. The inverter has disconnected from the utility grid.
Corrective measures:
• Check whether the grid voltage at the connection point of the inverter is
permanently in the permissible range.
If the grid voltage is outside the permissible range due to local grid
conditions, contact the grid operator. The grid operator must agree with
an adjustment of the voltage at the feed-in point or with a change of the
monitored operating limits.
If the grid voltage is permanently within the permissible range and this
message is still displayed, contact Service.
Service Manual11STP15-17TL-10-SG-en-10
Page 12
4 Troubleshooting
Event numberDisplay message, cause and corrective measures
202 to 203
Grid fault
The utility grid has been disconnected, the AC cable is damaged or the grid
voltage at the connection point of the inverter is too low. The inverter has disconnected from the utility grid.
Corrective measures:
• Make sure that the circuit breaker is switched on.
• Make sure that the AC cable is not damaged.
• Make sure that the AC cable is correctly connected.
• Check whether the grid voltage at the connection point of the inverter is
permanently in the permissible range.
If the grid voltage is outside the permissible range due to local grid
conditions, contact the grid operator. The grid operator must agree with
an adjustment of the voltage at the feed-in point or with a change of the
monitored operating limits.
If the grid voltage is permanently within the permissible range and this
message is still displayed, contact Service (see Section15, page43).
301
Grid fault
The ten-minute average value of the grid voltage is no longer within the permissible range. The grid voltage or grid impedance at the connection point is
too high. The inverter disconnects from the utility grid to maintain power quality.
Corrective measures:
• Check whether the grid voltage at the connection point of the inverter is
permanently in the permissible range.
If the grid voltage is outside the permissible range due to local grid
conditions, contact the grid operator. The grid operator must agree with
an adjustment of the voltage at the feed-in point or with a change of the
monitored operating limits.
If the grid voltage is permanently within the permissible range and this
message is still displayed, contact Service (see Section15, page43).
401 to 404
Grid fault
The inverter is no longer in grid-parallel operation. The inverter has stopped
feeding into the utility grid.
Corrective measures:
• Check the grid connection for significant short-term frequency fluctuations.
SMA Solar Technology AG
Service ManualSTP15-17TL-10-SG-en-1012
Page 13
SMA Solar Technology AG
Event numberDisplay message, cause and corrective measures
501
Grid fault
The power frequency is not within the permissible range. The inverter has disconnected from the utility grid.
Corrective measures:
• If possible, check the power frequency and observe how often
fluctuations occur.
If fluctuations occur frequently and this message is displayed often,
contact the grid operator and request approval to change the operating
parameters of the inverter.
If the grid operator gives his approval, discuss any changes to the
operating parameters with Service (see Section15, page43).
601
Grid fault
The inverter has detected an excessively high proportion of direct current in
the grid current.
Corrective measures:
• Check the grid connection for direct current.
• If this message is displayed frequently, contact the grid operator and
check whether the monitoring threshold on the inverter can be raised.
701
Frq. not permitted > Check parameter
The power frequency is not within the permissible range. The inverter has disconnected from the utility grid.
Corrective measures:
• If possible, check the power frequency and observe how often
fluctuations occur.
If fluctuations occur frequently and this message is displayed often,
contact the grid operator and request approval to change the operating
parameters of the inverter.
If the grid operator gives his approval, discuss any changes to the
operating parameters with Service (see Section15, page43).
1302
Waiting for grid voltage > Grid failure > Check AC circuit breaker
The AC cable is not correctly connected or the country data set is not correctly
configured.
Corrective measures:
• Ensure that the AC cable is correctly connected (see the operating
manual of the inverter).
• Ensure that the country data set has been configured correctly.
• Check the fuse.
4 Troubleshooting
Service Manual13STP15-17TL-10-SG-en-10
Page 14
4 Troubleshooting
Event numberDisplay message, cause and corrective measures
1501
Reconnection fault grid
The changed country data set or the value of a parameter you have set does
not correspond to the local requirements. The inverter cannot connect to the
utility grid.
Corrective measures:
• Ensure that the country data set has been configured correctly. Check the
setting of the rotary switches A and B or select the operating parameter
Set country standard and check the value.
3301 to 3303
Unstable operation
The ten-minute average value of the grid voltage is no longer within the permissible range. The grid voltage or grid impedance at the connection point is
too high. The inverter disconnects from the utility grid to maintain power quality.
Corrective measures:
• Check whether the grid voltage at the connection point of the inverter is
permanently in the permissible range.
If the grid voltage is outside the permissible range due to local grid
conditions, contact the grid operator. The grid operator must agree with
an adjustment of the voltage at the feed-in point or with a change of the
monitored operating limits.
If the grid voltage is permanently within the permissible range and this
message is still displayed, contact Service (see Section15, page43).
3401 to 3402
DC overvoltage > Disconnect generator
Overvoltage at the DC input. This can destroy the inverter.
This message is additionally highlighted by rapid flashing of the backlight.
Corrective measures:
• Immediately disconnect the inverter from all voltage sources (see
Section2.2, page7).
• Check whether the DC voltage is below the maximum input voltage of
the inverter. If the DC voltage is below the maximum input voltage of the
inverter, reconnect the DC connectors to the inverter.
• If the DC voltage exceeds the maximum input voltage of the inverter,
ensure that the PV array has been correctly rated or contact the installer
of the PV array.
• If this message is repeated frequently, contact Service (see Section15,
page43).
SMA Solar Technology AG
Service ManualSTP15-17TL-10-SG-en-1014
Page 15
SMA Solar Technology AG
Event numberDisplay message, cause and corrective measures
3501
Insulation failure > Check generator
The inverter has detected a ground fault in the PV array.
Corrective measures:
• Check the PV system for ground faults (see Section7, page28).
3601
High discharge curr. > Check generator
The leakage current of the inverter and the PV array is too high. There is a
ground fault, a residual current or a malfunction.
The inverter interrupts feed-in operation immediately after exceeding a limiting
value. When the fault is eliminated, the inverter automatically reconnects to the
utility grid.
Corrective measures:
• Check the PV system for ground faults (see Section7, page28).
3701
Resid.curr.too.high > Check generator
The inverter has detected a residual current due to temporary grounding of the
PV array.
Corrective measures:
• Check the PV system for ground faults (see Section7, page28).
3801 to 3802
DC overcurrent > Check generator
Overcurrent at the DC input. The inverter briefly interrupts feed-in operation.
Corrective measures:
• If this message is displayed frequently, ensure that the PV array has been
correctly rated and wired.
3901 to 3902
Waiting for DC start cond. > Start cond. not met
The feed-in conditions for the utility grid are not yet fulfilled.
Corrective measures:
• Wait for higher irradiation.
• If this message is displayed frequently in the morning, increase the
voltage limit for starting grid feed-in. Change the parameter Criticalvoltage to start feed-in.
• If this message is displayed frequently with medium irradiation, ensure
that the PV array is correctly rated.
4 Troubleshooting
Service Manual15STP15-17TL-10-SG-en-10
Page 16
4 Troubleshooting
Event numberDisplay message, cause and corrective measures
4001
String X defect. > Do not disconn. ESS
There is reverse current in the string displayed or the polarity of this string is reversed. Further strings could also be affected. The PV array is short-circuited. In
exceptional circumstances, this error message may be triggered by soiling or
shading of the modules (e.g. by leaves or snow).
Corrective measures:
• Disconnect the inverter from voltage sources when it is dark (see
Section2.2, page7)
• Check the design and the circuitry of the PV array.
• If irradiation is sufficient, check whether the same voltage is present at the
DC inputs A1 to A5.
If the same voltage is not present, one of the PV modules is possibly
defective.
4002
String X low power > Check generator
String-failure detection has detected a failed or weak string.
Corrective measures:
• Test the string that is shown in the message.
4003
String X defect. > Do not disconn. ESS
String-failure detection has detected a failed or weak substring.
Corrective measures:
• Disconnect the inverter from all voltage sources (see Section2.2, page7)
.
• Check the design and the circuitry of the PV array.
• If irradiation is sufficient, check whether the same voltage is present at the
DC inputs A1 to A5.
If the same voltage is not present, one of the PV modules is possibly
defective.
4005
Part.str. X low p. > Check generator
String-failure detection has detected a failed or weak substring.
Corrective measures:
• Test the substring indicated in the message.
6001 to 6445
Self diagnosis > Interference device
The cause must be determined by the Service.
Corrective measures:
• Contact Service (see Section15, page43).
SMA Solar Technology AG
Service ManualSTP15-17TL-10-SG-en-1016
Page 17
SMA Solar Technology AG
Event numberDisplay message, cause and corrective measures
6313
Interference device
The cause must be determined by the Service.
Corrective measures:
• Contact Service (see Section15, page43).
6429 to 6439
Interference device
The cause must be determined by the Service.
Corrective measures:
• Contact Service (see Section15, page43).
6501 to 6502
Self diagnosis > Overtemperature
The inverter has switched off due to excessive temperature.
Corrective measures:
• Clean the cooling fins on the rear of the enclosure and the air ducts on
the top using a soft brush.
• Ensure that the inverter has sufficient ventilation.
6603 to 6604
Self-diagnosis > Overload
The cause must be determined by the Service.
Corrective measures:
• Contact Service (see Section15, page43).
6701 to 6702
Comm. disturbed
The cause must be determined by the Service.
Corrective measures:
• Contact Service (see Section15, page43).
6801 to 6802
Self-diagnosis > Input A defective
The cause must be determined by the Service.
Corrective measures:
• Contact Service (see Section15, page43).
6901 to 6902
Self-diagnosis > Input B defective
The cause must be determined by the Service.
Corrective measures:
• Contact Service (see Section15, page43).
7001 to 7002
Sensor fault fan permanently on
The cause must be determined by the Service.
Corrective measures:
• Contact Service (see Section15, page43).
4 Troubleshooting
Service Manual17STP15-17TL-10-SG-en-10
Page 18
4 Troubleshooting
Event numberDisplay message, cause and corrective measures
7101
SD card defective
The SD memory card is not formatted.
Corrective measures:
• Re-format the SD memory card.
• Re-save the files to the SD memory card.
7102
Parameter file not found or defective
The parameter file was not found or is defective. The update failed. The inverter continues feeding power into the grid.
Corrective measures:
• Copy the parameter file into the card drive: \PARASET directory.
7105
Param. setting failed
It was not possible to set the parameter via the SD memory card. The inverter
continues feeding power into the grid.
Corrective measures:
• Check the parameters for valid values.
• Ensure change rights via SMAGridGuardcode.
7106
Update file defect.
Update file on the SD memory card is faulty.
Corrective measures:
• Re-format the SD memory card.
• Re-save the files to the SD memory card.
7110
No update file found
No update file has been found.
Corrective measures:
• Copy the update file in the SD memory card folder. Select the folder
\UPDATE.
7201 to 7202
Data stor. not poss.
Internal error. The inverter continues to feed into the utility grid.
Corrective measures:
• Contact Service.
7303
Update main CPU failed
The cause must be determined by the Service.
Corrective measures:
• Contact Service (see Section15, page43).
SMA Solar Technology AG
Service ManualSTP15-17TL-10-SG-en-1018
Page 19
SMA Solar Technology AG
Event numberDisplay message, cause and corrective measures
7305
Update RS485I module failed
Internal error. The inverter continues to feed into the utility grid.
Corrective measures:
• Retry update.
• If this message is displayed again, contact Service (see Section15,
page43).
7307
Update BT failed
Internal error. The inverter continues to feed into the utility grid.
Corrective measures:
• Retry update.
• If this message is displayed again, contact Service (see Section15,
page43).
7309
Upd. display failed
Internal error. The inverter continues to feed into the utility grid.
Corrective measures:
• Retry update.
• If this message is displayed again, contact Service (see Section15,
page43).
7311
Update language table failed
Internal error. The inverter continues to feed into the utility grid.
Corrective measures:
• Retry update.
• If this message is displayed again, contact Service (see Section15,
page43).
7314
Update string protection failed
Internal error. The inverter continues to feed into the utility grid.
Corrective measures:
• Retry update.
• If this message is displayed again, contact Service (see Section15,
page43).
7316
Update Speedwire module failed
Internal error. The inverter continues to feed into the utility grid.
Corrective measures:
• Retry update.
• If this message is displayed again, contact Service (see Section15,
page43).
4 Troubleshooting
Service Manual19STP15-17TL-10-SG-en-10
Page 20
4 Troubleshooting
Event numberDisplay message, cause and corrective measures
7324
Wait for update conditions
• Ensure that there is DC supply to the inverter and that it feeds more than
1,000 W into the utility grid for over one minute.
7326
Webconnect update failed
Internal error. The inverter continues to feed into the utility grid.
Corrective measures:
• Retry update.
7401
Varistor defective
At least one of the thermally monitored varistors is defective.
Corrective measures:
• Check the function of the varistors (see Section8, page31).
7508
Fan fault > Clean fan
One of the fans is blocked.
Corrective measures:
• Clean the fans (see Section5, page23).
7701 to 7703
Self diagnosis > Interference device
The cause must be determined by the Service.
Corrective measures:
• Contact Service (see Section15, page43).
8001
Derating occurred
The power supplied by the inverter was reduced to below the maximum possible instantaneous power (derating) for more than ten minutes due to excessive
temperature.
Corrective measures:
• If this message is displayed frequently, clean the fans (see Section5,
page23).
• Ensure that the inverter has sufficient ventilation.
8104
Interference device
The cause must be determined by the Service.
Corrective measures:
• Contact Service (see Section15, page43).
8201
Interference device > Do not disconn. ESS
The cause must be determined by the Service.
Corrective measures:
• Disconnect the inverter from all voltage sources when it is dark (see
Section2.2, page7).
• Contact Service (see Section15, page43).
SMA Solar Technology AG
Service ManualSTP15-17TL-10-SG-en-1020
Page 21
SMA Solar Technology AG
Event numberDisplay message, cause and corrective measures
8202
Connect ESS, do not open cover
Device disturbance or reverse current in the PV array. Wait until dark before
disconnecting the PV array from the inverter in order to prevent the risk of an
electric arc occurring when the DC connectors are pulled out.
Corrective measures:
• Securely plug in the ESS all the way.
• Disconnect the inverter from all voltage sources when it is dark (see
Section2.2, page7).
8203
Interference device > Do not disconn. ESS
The cause must be determined by the Service.
Corrective measures:
• Disconnect the inverter from all voltage sources when it is dark (see
Section2.2, page7).
• Contact Service (see Section15, page43).
8301
Lightn.prot.inactive > Chk lightn.prot.A/PE
At least one surge arrester is defective.
Corrective measures:
• Check the function of the surge arresters (see Section10, page34).
8302
Lightn.prot.inactive > Chk lightn.prot.B/PE
At least one surge arrester is defective.
Corrective measures:
• Check the function of the surge arresters (see Section10, page34).
8401
Overheating > Disconn. device from generator and grid
Device disturbance due to overheating in the inverter. The inverter disconnects
from the utility grid and from the PV array.
Corrective measures:
• Contact Service (see Section15, page43).
9002
Grid Guard-Code invalid
The SMAGridGuard code entered is incorrect. The operating parameters are
still protected and cannot be changed.
Corrective measures:
• Enter the correct SMAGridGuard code.
9003
Grid param. locked
The parameters are now locked but can be changed at any time via the rotary
switch. No corrective measures required.
4 Troubleshooting
Service Manual21STP15-17TL-10-SG-en-10
Page 22
4 Troubleshooting
Event numberDisplay message, cause and corrective measures
9005
Changing grid param. not possible > Ensure DC supply
This error can have the following causes:
• The selected rotary switch setting for the country configuration is not
programmed.
• The parameters to be changed are protected.
• The DC voltage at the DC input is not sufficient to run the main CPU.
Corrective measures:
• Ensure that the country data set has been configured correctly.
• Enter the SMA Grid Guard code.
• Ensure that sufficient DC voltage is available (green LED is glowing or
flashing).
9007
Abort self-test
Error in the AC cabling.
Corrective measures:
• Ensure that the AC connection is correct (see operating manual of the
inverter).
SMA Solar Technology AG
Service ManualSTP15-17TL-10-SG-en-1022
Page 23
SMA Solar Technology AG
5 Cleaning the Fans
5Cleaning the Fans
5.1Cleaning the Fan at the Bottom
First clean the fan at the bottom of the inverter and then clean the fan on the left-hand side of the
enclosure.
Procedure:
1.
Danger to life due to electric shock
• Disconnect the inverter from all voltage sources (see Section2.2 "Disconnecting the
Inverter from Voltage Sources", page7).
2. Wait for the fan to stop rotating.
3. Remove the fan guard and clean it:
• Use a screwdriver to push the two locking
tabs at the right-hand edge of the fan guard
to the right-hand side and remove them
from the retainer.
• Carefully remove the fan guard.
• Clean the fan guard with a soft brush, a paint brush, a cloth or compressed air.
4. Press the locking tabs on the fan toward the
center of the fan.
5. Carefully remove the fan from the inverter.
6. Release and remove the fan plug.
Service Manual23STP15-17TL-10-SG-en-10
Page 24
5 Cleaning the Fans
7.
Damage to the fan due to compressed air
• Clean the fan only with a soft brush, a paint brush, or a damp cloth.
8. After cleaning, insert the fan plug back into the
pin connector until it snaps into place.
9. Insert the fan into the inverter until it snaps into place.
10. Push the fan guard into the retainer until it snaps into place.
11. Clean the fan on the left-hand side of the enclosure (see Section5.2 "Cleaning the Fan on the
Left-Hand Side of the Enclosure", page24).
SMA Solar Technology AG
5.2Cleaning the Fan on the Left-Hand Side of the
Enclosure
1.
Danger to life due to electric shock
• Ensure that the inverter is disconnected from all voltage sources (see Section2.2
"Disconnecting the Inverter from Voltage Sources", page7).
2. Remove the ventilation grids on the left-hand and right-hand sides and clean them:
• Turn the rotary fastener of the ventilation
grid with a flat-blade screwdriver until the
notch is in a vertical position.
• Remove the ventilation grid. Use a
screwdriver to gently lever open the
ventilation grid.
• Clean the ventilation grid with a soft brush, a paint brush, or compressed air.
Service ManualSTP15-17TL-10-SG-en-1024
Page 25
SMA Solar Technology AG
3.
Damage to the inverter due to foreign bodies
• Do not remove the ventilation grids permanently, otherwise foreign bodies could
penetrate the enclosure.
4. Wait for the fan to stop rotating.
5. Press the locking tabs on the fan toward the
center of the fan.
6. Carefully remove the fan from the inverter.
7. Release and remove the fan plug.
8.
Damage to the fan due to compressed air
• Clean the fan only with a soft brush, a paint brush, or a damp cloth.
9. After cleaning, insert the fan plug into the pin
connector until it snaps into place.
5 Cleaning the Fans
10. Insert the fan into the inverter until it snaps into place.
11. Attach the ventilation grids on the right-hand and left-hand side of the inverter:
Service Manual25STP15-17TL-10-SG-en-10
Page 26
5 Cleaning the Fans
SMA Solar Technology AG
• Reinsert the ventilation grid until it snaps
into place.
• Turn the rotary lock of the ventilation grid
with a flat-blade screwdriver until the slot is
in a horizontal position and the arrows
point to the right.
• Ensure that the ventilation grid is securely in place.
12. Recommission the inverter (see Section12, page38).
13. Check the fans to ensure that they are working properly (see Section6, page27).
Service ManualSTP15-17TL-10-SG-en-1026
Page 27
SMA Solar Technology AG
6 Checking the Function of the Fans
6Checking the Function of the Fans
You can check the function of the fans by setting a parameter.
The basic procedure for changing operating parameters is described in the manual of the inverter
or the communication product (see the operating manual of the inverter or communication product).
Procedure:
1. Select the parameter Fan test or FanTst and set to On.
2. Save settings.
3. Check whether air is being drawn in through the bottom and is coming out of the upper
ventilation grids and whether the fans are making any unusual noises.
If no air is being drawn in through the bottom, no air is coming out of the ventilation grids, or
the fans are making unusual noises, then the fans were presumably installed improperly.
Check whether the fans have been installed correctly.
If the fans were installed correctly, contact Service (see Section15, page43).
4. Select the parameter Fan test or FanTst and set to Off.
5. Save settings.
Service Manual27STP15-17TL-10-SG-en-10
Page 28
7 Checking the PV System for Ground Faults
SMA Solar Technology AG
7Checking the PV System for Ground Faults
If the inverter displays the event numbers 3501, 3601 or 3701, there could be a ground fault. The
electrical insulation from the PV system to ground is defective or insufficient.
Danger to life due to electric shock
In the event of a ground fault, high voltages can be present.
• Touch the cables of the PV array on the insulation only.
• Do not touch any parts of the substructure or frame of the PV array.
• Do not connect PV strings with ground faults to the inverter.
Destruction of the measuring device due to overvoltage
• Only use measuring devices with a DC input voltage range of 1,000 V or higher.
Procedure:
In order to check the PV system for ground faults, perform the following actions in the prescribed
order. The exact procedure is described in the following sections.
• Check the PV system for ground faults by measuring the voltage.
• If the voltage measurement was not successful, check the PV system via insulation resistance
measurement for ground faults.
Test by Measuring the Voltage
Proceed as follows to check each string in the PV system for ground faults.
Procedure:
1.
Danger to life due to high voltages
• Disconnect the inverter from all voltage sources (see Section2.2, page7).
2. Measure the voltages:
• Measure the voltage between the positive terminal and the ground potential (PE).
• Measure the voltage between the negative terminal and the ground potential (PE).
• Measure the voltage between the positive and negative terminals.
If the following results are present at the same time, there is a ground fault in the PV
system:
☑ All measured voltages are stable.
☑ The sum of the two voltages to ground potential is approximately equal to the
voltage between the positive and negative terminals.
• If a ground fault is present, determine the location of the ground fault via the ratio of the
two measured voltages and eliminate the ground fault.
Service ManualSTP15-17TL-10-SG-en-1028
Page 29
SMA Solar Technology AG
7 Checking the PV System for Ground Faults
Example: Location of the ground fault
The example shows a ground fault between the second and third PV module.
3. If a definite ground fault cannot be measured and the message is still displayed, measure the
insulation resistance.
4. Reconnect the strings without ground faults to the inverter and recommission the inverter (see
Section12, page38).
Test by Measuring the Insulation Resistance
If the voltage measurement does not provide sufficient evidence of a ground fault, the insulation
resistance measurement can provide more exact results.
Figure 1: Schematic diagram of the measurement
Service Manual29STP15-17TL-10-SG-en-10
Page 30
total
7 Checking the PV System for Ground Faults
SMA Solar Technology AG
Calculating the insulation resistance
The expected total resistance of the PV system or of an individual string can be calculated
using the following formula:
The exact insulation resistance of a PV module can be obtained from the module manufacturer
or the datasheet.
For the resistance of a PV module an average value can be assumed: for thin-film PV modules
approximately 40MOhm and for polycrystalline and monocrystalline PV modules
approximately50MOhm per PV module (for further information on calculating the insulation
resistance see the Technical Information "Insulation Resistance (Riso) of Non-Galvanically
Isolated PV Systems" at www.SMA-Solar.com).
Required devices:
☐ Suitable device for safe disconnection and short-circuiting
☐ Measuring device for insulation resistance
Device required for safe disconnection and short-circuiting of the PV array
The insulation resistance can only be measured with a suitable device for safe disconnection
and short-circuiting of the PV array. If no suitable device is available, the insulation
measurement must not be carried out.
Procedure:
1. Calculate the expected insulation resistance per string.
2.
Danger to life due to high voltages
• Disconnect the inverter from all voltage sources (see Section2.2, page7).
3. Install the short circuit device.
4. Connect the measuring device for insulation resistance.
5. Short-circuit the first string.
6. Set the test voltage. The test voltage should be as close as possible to the maximum system
voltage of the PV modules but must not exceed it (see datasheet of the PV modules).
7. Measure the insulation resistance.
8. Eliminate the short circuit.
9. Measure the remaining strings in the same manner.
☑ If the insulation resistance of a string deviates considerably from the theoretically
calculated value, there is a ground fault present in that string.
10. Reconnect to the inverter only those strings from which the ground fault has been eliminated.
11. Reconnect all other strings to the inverter.
12. Recommission the inverter (see Section12, page38).
13. If the inverter still displays an insulation error, contact Service (see Section15, page43). The
PV modules might not be suitable for the inverter in the present quantity.
Service ManualSTP15-17TL-10-SG-en-1030
Page 31
SMA Solar Technology AG
8 Checking the Function of the Varistors
8Checking the Function of the Varistors
Figure 2: Varistors inside the inverter
Destruction of the inverter due to overvoltage
If varistors are missing, the inverter is no longer protected against overvoltage.
• Do not operate the inverter without varistors in PV systems with a high risk of overvoltages.
• Do not recommission the inverter until the defective varistors have been replaced.
Destruction of the measuring device due to overvoltage
• Only use measuring devices with a DC input voltage range of 1,000 V or higher.
Check the function of each varistor as described in the following:
Procedure:
1.
Danger to life due to high voltages
• Disconnect the inverter from all voltage sources and open the lower enclosure lid (see
Section2.2, page7).
Service Manual31STP15-17TL-10-SG-en-10
Page 32
8 Checking the Function of the Varistors
2. Release all four screws of the DC protective
cover using an Allen key (AF3) and remove the
DC protective cover.
3. Insert the insertion tool into the clamping
contacts of the connecting terminal plate.
4. Remove the varistor from the connecting terminal plate.
5. Use a measuring device to measure whether
there is a conductive connection between the
middle and the left-hand varistor lead. Hold the
varistor with the labeling pointing forward.
SMA Solar Technology AG
If there is no conductive connection, the varistor is defective. SMASolarTechnologyAG
recommends replacing all varistors immediately.
• Order new varistors and insertion tools (see Section14 "Spare Parts", page42).
• Reinsert old varistors and leave them in place until new varistors and insertion tools are
available.
• If new varistors are available, replace all varistors (see Section9, page33).
If a conductive connection is present, contact Service (see Section15, page43).
Service ManualSTP15-17TL-10-SG-en-1032
Page 33
SMA Solar Technology AG
9 Replacing the Varistors
9Replacing the Varistors
Proceed as follows to replace each varistor.
Procedure:
1.
Danger to life due to high voltages
• Disconnect the inverter from all voltage sources and open the lower enclosure lid (see
Section2.2, page7).
2. Release all four screws of the DC protective
cover using an Allen key (AF3) and remove the
DC protective cover.
3. Insert the insertion tool into the clamping
contacts of the connecting terminal plate.
4. Remove the varistor from the connecting terminal plate.
5. Insert the new varistor into the connecting
terminal plate. The labeling on the varistor must
face down towards the insertion tool.
6. Remove the insertion tool from the clamping contacts of the connecting terminal plate.
7. Recommission the inverter (see Section12, page38).
Service Manual33STP15-17TL-10-SG-en-10
Page 34
10 Checking the Function of the Surge Arresters
SMA Solar Technology AG
10 Checking the Function of the Surge Arresters
If the inverter displays the event numbers 8301 or 8302, at least one surge arrester is defective.
Check the function of each surge arrester as described in the following:
Procedure:
1.
Danger to life due to electric shock
• Disconnect the inverter from all voltage sources (see Section2.2, page7).
• Wait 20 minutes before removing the DC protective cover.
2. Release the screws on the DC protective cover
using an Allen key (AF3), lift the DC protective
cover upwards from below and remove it.
3. Check whether a surge arrester is defective.
If a green stripe is visible next to the type designation in the inspection window of the surge
arrester, then the surge arrester is in good condition.
If a red stripe is visible next to the type designation in the inspection window of the surge
arrester, then the surge arrester is defective. SMASolarTechnologyAG recommends
replacing all surge arresters since the cause of the failure usually affects all surge arresters to
the same extent.
• Order new surge arresters (see Section14 "Spare Parts", page42).
• If new surge arresters are available, replace all surge arresters (see Section11, page36
).
Service ManualSTP15-17TL-10-SG-en-1034
Page 35
SMA Solar Technology AG
4. Tighten all four screws on the DC protective
cover with an Allen key (AF3) in the sequence 1
to 4 (torque: 3Nm ± 0.3Nm).
5. Recommission the inverter (see Section12, page38).
10 Checking the Function of the Surge Arresters
Service Manual35STP15-17TL-10-SG-en-10
Page 36
11 Replacing the Surge Arrester
SMA Solar Technology AG
11 Replacing the Surge Arrester
If the inverter displays the event numbers 8301 or 8302, at least one surge arrester is defective.
SMASolarTechnologyAGrecommends replacing all surge arresters.
Procedure:
1.
Danger to life due to high voltages
• Disconnect the inverter from all voltage sources and open the lower enclosure lid (see
Section2.2, page7).
• Wait 20 minutes before removing the DC protective cover.
2. Release all four screws of the DC protective
cover using an Allen key (AF3) and remove the
DC protective cover.
3. Pull all surge arresters out of the slots. To do so, squeeze the grooved areas on the left and
right sides of the surge arrester.
4. Insert new surge arresters:
• The surge arrester marked "PE 500" must
be inserted in the bottom slot. The
inspection window on the surge arrester
must face to the right.
• If input A and input B were secured with
surge arresters, insert a new surge arrester
into each slot. The inspection window on
each surge arrester must face to the right.
Service ManualSTP15-17TL-10-SG-en-1036
Page 37
SMA Solar Technology AG
• If only input A was secured with a surge
arrester, insert both new surge arresters into
the two upper slots. The inspection window
on each surge arrester must face to the
right.
5. Ensure that each surge arrester is securely inserted into its slot.
6. Tighten all four screws on the DC protective
cover with an Allen key (AF3) in the sequence 1
to 4 (torque: 3Nm ± 0.3Nm).
7. Recommission the inverter (see Section12, page38).
11 Replacing the Surge Arrester
Service Manual37STP15-17TL-10-SG-en-10
Page 38
12 Recommissioning the Inverter
SMA Solar Technology AG
12 Recommissioning the Inverter
If you have disconnected the inverter from all voltage sources (e.g. for configuration purposes) and
want to recommission it, proceed as follows.
Requirements:
☐ The inverter must be correctly mounted.
☐ The circuit breaker must be correctly rated.
Procedure:
1. Connect the DC connectors to the inverter.
☑ The DC connectors snap into place.
2. Seal all unused DC inputs using the DC connectors with sealing plugs.
3. Ensure that all DC connectors are securely in place.
4. Insert the lower enclosure lid from above and
fold it down. The screws must protrude from the
lower enclosure lid.
5. Tighten all six screws with an Allen key (AF3) in
the order 1 to 6 (torque: 2.0Nm ± 0.3Nm). By
tightening the screws in the prescribed order,
you avoid warping the enclosure lid, which
would keep it from sealing correctly.
Useful hint: If the screws fall out of the lower
enclosure lid, insert the long screw into the lower
middle hole and the five short screws into the
other holes.
6. If the ESS is used, check it for signs of wear:
• Check the metal mounting tabs inside the
ESS for discoloration or damage.
If the metal mounting tabs show brown
discoloration or are damaged, order a new
ESS from SMASolarTechnologyAG and
have the ESS replaced.
If the metal mounting tabs show no brown
discoloration or damage, the ESS is not
worn and can still be used.
7. Securely plug in the ESS. The ESS must be aligned parallel to and flush with the enclosure.
Service ManualSTP15-17TL-10-SG-en-1038
Page 39
SMA Solar Technology AG
12 Recommissioning the Inverter
8. Switch on the circuit breaker of all three line conductors.
9. If the multifunction relay is used, switch on any supply voltage to the load.
☑ All three LEDs start to glow and the start-up phase begins. The start-up phase may take several
minutes.
☑ The green LED is glowing and the display alternates between the device type, the firmware
version, the serial number or designation of the inverter, the NetID, the configured country
data set and the display language.
✖ Green LED is flashing?
Possible cause of error: the DC input voltage is still too low or the inverter is monitoring the
utility grid.
• Once the DC input voltage is sufficiently high and the grid connection conditions are met,
the inverter will start operation.
✖ The red LED is glowing and an error message and event number appear in the display?
An error has occurred.
• Rectify the error (see Section4 "Troubleshooting", page10).
Service Manual39STP15-17TL-10-SG-en-10
Page 40
13 Decommissioning the Inverter
SMA Solar Technology AG
13 Decommissioning the Inverter
Risk of injury when lifting the inverter, or if it is dropped
The inverter weighs 59 kg. There is risk of injury if the inverter is lifted incorrectly or dropped while
being transported or when attaching it to or removing it from the wall mounting bracket.
• Carry and lift the inverter in an upright position
with several people without tilting it. With one
hand grasp the recessed grip, and with the
other hand support the top part of the
enclosure. This will prevent the inverter tipping
forward.
• If the inverter is to be transported and lifted
with a crane, remove the filler plugs on the top
of the inverter and screw the eye bolts into the
threads.
Procedure:
1.
Danger to life due to high voltages
• Disconnect the inverter from all voltage sources (see Section2.2, page7).
2. Remove the AC cable from the inverter. Press the locking levers all the way upward and pull
the conductors out of the connecting terminal plate for the AC cable.
3. Press down the locking levers of the connecting terminal plate for the AC cable.
4. If the multi-function relay or the SMA Power Control Module are used, remove the connection
cable from the inverter.
5. If other cables (e.g. data cables or network cables) are connected, remove them from the
inverter.
6. If the inverter is protected against theft, open the padlock and remove it.
Service ManualSTP15-17TL-10-SG-en-1040
Page 41
SMA Solar Technology AG
13 Decommissioning the Inverter
7. Insert the lower enclosure lid from above and
fold it down. The screws must protrude from the
lower enclosure lid.
8. Tighten all six screws with an Allen key (AF3) in
the order 1 to 6 (torque: 2.0Nm ± 0.3Nm). By
tightening the screws in the prescribed order,
you avoid warping the enclosure lid, which
would keep it from sealing correctly.
Useful hint: If the screws fall out of the lower
enclosure lid, insert the long screw into the lower
middle hole and the five short screws into the
other holes.
9. Securely plug in the ESS. The ESS must be aligned parallel to and flush with the enclosure.
10.
Risk of burns due to hot enclosure parts
• Wait 30 minutes for the enclosure to cool down.
11. Using an Allen key (AF4), unscrew the two M5x10 cylindrical screws by which the inverter is
fastened to the rear panel.
12. Raise the inverter to remove it from the rear panel.
13. If the inverter is to be stored or shipped in packaging, pack the inverter and, if applicable, the
ESS. Use the original packaging or packaging that is suitable for the weight and dimensions of
the inverter.
14. Dispose of the inverter in accordance with the locally applicable disposal regulations for
electronic waste.
Service Manual41STP15-17TL-10-SG-en-10
Page 42
14 Spare Parts
SMA Solar Technology AG
14 Spare Parts
You will find the spare parts for your product in the following overview. If required, these can be
ordered from SMASolarTechnologyAG or your distributor.
DesignationBrief descriptionSMA order number
ElectronicSolarSwitchESS as spare partESS-HANDLE*
Replacement varistorsSet with four thermally-moni-
tored varistors incl. insertion
tool
Insertion tool for replacing
varistors
Surge arrester type IIType II surge arrester for input
SUNCLIX DC connectorField plug for conductor cross-
Ventilation gridVentilation grid set (right and
* When ordering a new ESS, always indicate the device type and serial number of the inverter.
Insertion tool for varistorsSB-TVWZ
A and input B
sections of 2.5mm²to6mm²
left) as spare part
STP-TV9
DC_SPD_KIT_2-10
SUNCLIX-FC6-SET
45-1089980
Service ManualSTP15-17TL-10-SG-en-1042
Page 43
SMA Solar Technology AG
15 Contact
15 Contact
If you have technical problems with our products, please contact the SMAServiceLine. We need
the following information in order to provide you with the necessary assistance:
• Inverter device type
• Inverter serial number
• Inverter firmware version
• Special country-specific settings of the inverter (if applicable)
• Type and quantity of PV modules connected
• Mounting location and altitude of the inverter
• Inverter message
• Optional equipment, e.g. communication products
• Operating mode of the multifunction relay (if present)
AustraliaSMA Australia Pty Ltd.
Sydney
Belgien/Belgique/België
BrasilVide España (Espanha)
ČeskoSMA Central & Eastern Europes.r.o.
ChileVer España
DanmarkSe Deutschland (Tyskland)
DeutschlandSMA Solar Technology AG
EspañaSMA Ibérica Tecnología Solar,
SMA Benelux BVBA/SPRL
Mecheln
Praha
Niestetal
S.L.U.
Barcelona
Toll free for Australia: 1800SMAAUS
(1800762287)
International: +61294914200
+3215286 730
+420235010417
Sunny Boy, Sunny Mini Central, SunnyTripower: +495619522‑1499
Monitoring Systems (Kommunikationsprodukte): +495619522‑2499
Fuel Save Controller (PV-Diesel-Hybridsysteme): +495619522-3199
Sunny Island, Sunny Backup, Hydro Boy:
+495619522-399
Sunny Boy, Sunny Mini Central, Sunny
Tripower: +33472090440
Monitoring Systems: +33472090441
Sunny Island : +33472090442
Sunny Central : +33472090443
IndiaSMA Solar India Pvt. Ltd.
+912261713888
Mumbai
ItaliaSMA Italia S.r.l.
+39028934-7299
Milano
Κύπρος/Kıbrıs Βλέπε Ελλάδα/ Bkz. Ελλάδα (Yunanistan)
Luxemburg/
Luxembourg
Siehe Belgien
Voir Belgique
Magyarország lásd Česko (Csehország)
Nederlandzie Belgien (België)
ÖsterreichSiehe Deutschland
PerúVer España
PolskaPatrz Česko (Czechy)
PortugalSMA Solar Technology Portugal,
Unipessoal Lda
Gratuito em Portugal: 800208987
Internacional: +351212377860
Lisboa
RomâniaVezi Česko (Cehia)
SchweizSiehe Deutschland
Slovenskopozri Česko (Česká republika)
South AfricaSMA Solar Technology South Africa