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SMA solar inverters are one of the best solar inverters currently available on the market in Australia, being incredibly reliable and long-lasting. SMA Solar Technology is a German-based company that is also one of the biggest distributors of solar products in the world, as well as being one of the most respected.

sma solar inverter logo

Despite all of this, sometimes solar systems and solar inverters show errors that need to be corrected. To help the SMA solar inverter owners out there, find out about the different error codes below and how they can be addressed. If you see any of these faults or would like further information regarding your SMA solar inverter, give Static Electrics a call today on 1300 206 004 and we can assist.

Error Codes 101 – 701

Event number Error message, cause and required action
101102

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.

Required Action:

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.

202203

205

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.

Required Action:

Ensure that the circuit breaker is switched on.

Ensure that the AC cable is not damaged and that it is connected correctly.

Ensure that the country data set has been configured correctly.

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 the Service.

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.

Required Action:

During the feed-in operation, 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.

302 Active power limit AC voltage The inverter has reduced its power due to a too-high grid voltage to ensure grid stability.

Required Action:

If possible, check the grid voltage 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 the Service.

401404 Grid fault The inverter has disconnected from the utility grid. A stand-alone grid or a very large change in the power frequency was detected.

Required Action:

Check the grid connection for significant short-term frequency fluctuations.

501 Grid fault The power frequency is not within the permissible range. The inverter has disconnected from the utility grid.

Required Action:

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 the Service.

601 Grid fault The inverter has detected an excessively high proportion of direct current in the grid current.

Required Action:

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 Frequency not permitted > Check parameter The power frequency is not within the permissible range. The inverter has disconnected from the utility grid.

Required Action:

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 the Service.

Error Codes 901 – 6509

Event number Error message, cause and required action
901 PE connection missing > Check connection The grounding conductor is not correctly connected.

Required Action:

Ensure that the grounding conductor is correctly connected.

1001 L / N swapped > Check connection The connection of L and N is swapped.

Required Action:

Ensure that L and N are correctly connected.

1101 Installation fault > Check connection A second line conductor is connected to N.

Required Action:

Connect the neutral conductor to N.

1302 Waiting for grid voltage > Installation failure grid connection > Check grid and fuses L or N not connected.

Required Action:

Ensure that L and N are connected.

Ensure that the circuit breaker is switched on.

Ensure that the AC cable is not damaged and that it is connected correctly.

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.

Required Action:

Ensure that the country data set has been configured correctly. To do this, select the parameter Set country standard and check the value.

33013302

3303

Unstable operation There is not enough power at the DC input of the inverter for stable operation. The inverter cannot connect to the utility grid.

Required Action:

Ensure that the PV array is designed correctly.

Ensure that the PV array is not covered by snow or otherwise shaded.

Ensure that the PV array is free of errors.

34013402

3407

DC overvoltage > Disconnect generator Overvoltage at the DC input. This can destroy the inverter.

This message is signalized additionally by rapid flashing of the LEDs.

Required Action:

Immediately disconnect the inverter from all voltage sources.

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 the Service.

3501 Insulation failure > Check generator The inverter has detected a ground fault in the PV array.

Required Action:

Check the PV system for ground faults.

3701 Residual current too high > Check generator The inverter has detected a residual current due to temporary grounding of the PV array.

Required Action:

Check the PV system for ground faults.

38013802

3805

DC overcurrent > Check generator Overcurrent at the DC input. The inverter briefly interrupts feed-in operation.

Required Action:

If this message is displayed frequently, ensure that the PV array has been correctly rated and wired.

39013902 Waiting for DC start conditions > Start conditions not met The feed-in conditions for the utility grid are not yet fulfilled.

Required Action:

Ensure that the PV array is not covered by snow or otherwise shaded.

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 Critical voltage to start feed-in.

If this message is displayed frequently with medium irradiation, ensure that the PV array is correctly rated.

4011 Bridged strings determined The DC inputs A and B are connected in parallel.
4012 No bridged strings determined The DC inputs A and B are not connected in parallel.
6002-6412 Self-diagnosis > Interference device The cause must be determined by the Service.

Required Action:

Contact the Service.

65016502

6509

Self-diagnosis > Overtemperature The inverter has switched off due to excessive temperature.

Required Action:

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.

Ensure that the ambient temperature does not exceed +40 °.

Ensure that the inverter is not exposed to direct solar irradiation.

Error Codes 6512 – 7354

Event number Error message, cause and required action
6512 Minimum operating temperature not reached The inverter will only recommence grid feed-in once the temperature has reached at least −25°C.
66026603

6604

Self-diagnosis > Overload The cause must be determined by the Service.

Required Action:

Contact the Service.

68016802 Self-diagnosis > Input A defective Required Action:

Check whether a string is connected to input A.

Contact the service.

69016902 Self-diagnosis > Input B defective Required Action:

Check whether a string is connected to input B.

Contact the service.

67016702 Communication disturbed Error in the communication processor, the inverter continues feeding in, however. The cause must be determined by the Service.

Required Action:

If this message is displayed frequently, contact the Service.

7102 Parameter file not found or defective The parameter file was not found or is defective. The update failed. The inverter continues to feed in.

Required Action:

Copy the parameter file to the correct folder again.

7105 Parameter setting failed Parameters could not be set using the memory card. The inverter continues to feed in.

Required Action:

Ensure that the parameters are set correctly.

Ensure that the SMA Grid Guard code is available.

7106 Update file defective The update file is defective. The update failed. The inverter continues to feed in.
7110 No update file found No new update file was found on the SD memory card. The update failed. The inverter continues to feed in.
7112 Update file successfully copied
7113 The memory card is full or write-protected
7201 to 7202 Data storage not possible
7303 Update main CPU failed The cause must be determined by the Service.

Required Action:

Contact the Service.

7320 The device was successfully updated The firmware update was completed successfully.
7330 Condition test failedThe testing of the update conditions was successful. The firmware update package is suitable for this inverter.
7331 Update transport startedUpdate file is being copied.
7332 Update transport successful Update file was copied successfully to the inverter’s internal memory.
7333 Update transport failed Update file could not be copied to the inverter’s internal memory. In the event of connection with the inverter via WLAN, a poor connection quality can be the cause.

Required Action:

Retry update.

For WLAN connection: Improve the WLAN connection quality (e.g., via WLAN repeater) or establish a connection with the inverter via Ethernet.

If this message is displayed again, contact the Service.

7341 Update Bootloader The inverter is performing a bootloader update.
7342 Update Bootloader failed The bootloader update failed.

Required Action:

Retry update.

If this message is displayed again, contact the Service.

7347 Incompatible file The configuration file is not suitable for this inverter.

Required Action:

Ensure that the selected configuration file is suitable for this inverter.

Retry import.

7348 Incorrect file format The configuration file is not of the required format or is damaged.

Required Action:

Ensure that the selected configuration file is of the required format and is not damaged.

Retry import.

7349 Incorrect login rights for configuration file The user group logged in does not have the user rights necessary to be able to import a configuration.

Required Action:

Log in as Installer.

Import configuration file again.

7350 Transfer of a configuration file has started The configuration file is being transferred.
7351 Update WLAN The inverter is updating the WLAN module.
7352 Update of WLAN not successful The update of the WLAN module failed.

Required Action:

Retry update.

If this message is displayed again, contact the Service.

7353 Update time zone database The inverter is updating the time zone database.
7354 Update of time zone database not successful The update of the time zone database failed.

Required Action:

Retry update.

If this message is displayed again, contact the Service.

Error Codes 7355 – 10252

Event number Error message, cause and required action
7355 Update WebUI The inverter is updating the inverter user interface.
7356 Update of the WebUI not successful The update of the inverter user interface failed.

Required Action:

Retry update.

If this message is displayed again, contact the Service.

7500 to 7501 Fan fault > Check inverter electr. and fan Required Action:

Contact the Service.

7619 Communication fault with meter unit > Check communication to meter The inverter is not receiving any data from the energy meter.

Required Action:

Ensure that the energy meter is correctly integrated into the same network as the inverter (see energy meter manual).

For WLAN connection: Improve the WLAN connection quality (e.g., via WLAN repeater) or connect the inverter with the DHCP server (router) via Ethernet.

7702 Interference device The cause must be determined by the Service.

Required Action:

Contact the Service.

8003 Active power limit temperature The inverter has reduced its power output for more than ten minutes due to excessive temperature.

Required Action:

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.

Ensure that the ambient temperature does not exceed +40 °.

Ensure that the inverter is not exposed to direct solar irradiation.

8101 to 8104 Communication disturbed The cause must be determined by the Service.

Required Action:

Contact the Service.

9002 MA Grid Guard code invalid The SMA Grid Guard code entered is incorrect. The operating parameters are still protected and cannot be changed.

Required Action:

Enter the correct SMA Grid Guard code.

9003 Grid parameter lockedChanges to the grid parameters are now blocked. In order to be able to make changes to the grid parameters, from now on you must log in using the SMA Grid Guard code.
9005 Changing of grid parameters not possible > Ensure DC supply This error can have the following causes:

The parameters to be changed are protected.

The DC voltage at the DC input is not sufficient to run the main CPU.

Required Action:

Enter the SMA Grid Guard code.

Ensure that at least the DC start voltage is available (green LED is flashing, pulsing or glowing).

9007 Abort self-test The self-test (Italy only) was terminated.

Required Action:

Ensure that the AC connection is correct.

Restart the self-test.

10108 Time adjusted / old time
10109 Time adjusted / new time
10110 Time synchronization failed: |tn0|No time information could be called up from the set NTP server.

Required Action:

Ensure that the NTP server was configured correctly.

Ensure that the inverter is integrated into a local network with Internet connection.

10118 Parameter upload complete The configuration file was loaded successfully.
10248 [Interface]: network busy The network is busy. Data exchange between the devices is not at an optimum and is greatly delayed.

Required Action:

Increase the query intervals.

If necessary, reduce the number of devices in the network.

10249 [Interface]: network overloaded The network is overloaded. There is no data exchange between the devices.

Required Action:

Reduce the number of devices in the network.

If necessary, increase the data query intervals.

10250 [Interface]: package error rate [ok / high]The package error rate has changed. If the package error rate is high, the network is overloaded or the connection to the network switch or DHCP server (router) is disturbed.

Required Action if the package error rate is high:

Ensure that with an Ethernet connection, the network cable and the network connector are not damaged and that the network connectors are correctly plugged.

If necessary, increase the data query intervals.

If necessary, reduce the number of devices in the network.

10251 [Interface]: communication status goes to [OK / Warning / Error / Not connected]The communication status to the network switch or DHCP server (router) has changed. An additional error message may be displayed.
10252 [Interface]: communication disrupted There is no valid signal on the network line.

Required Action:

Ensure that with an Ethernet connection, the network cable and the network connector are not damaged and that the network connectors are correctly plugged.

Ensure that the DHCP server (router) and any network switches are signalizing correct operation.

Error Codes 10253 – 29004

Event number Error message, cause and required action
10253 [Interface]: connection speed goes to [100 Mbit / 10 Mbit]The data transfer rate has changed. The cause for the status [10 Mbit] can be a defective plug, a defective cable or the pulling or plugging of the network connector.

Required Action if the status is [10 Mbit]:

Ensure that with an Ethernet connection, the network cable and the network connector are not damaged and that the network connectors are correctly plugged.

Ensure that the DHCP server (router) and any network switches are signalizing correct operation.

10254 [Interface]: duplex mode goes to [Full / Half]The duplex mode (data transfer mode) has changed. The cause for the status [Half] can be a defective plug, a defective cable or the pulling or plugging of the network connector.

Required Action if the status is [Half]:

Ensure that with an Ethernet connection, the network cable and the network connector are not damaged and that the network connectors are correctly plugged.

Ensure that the DHCP server (router) and any network switches are signalizing correct operation.

10255 [Interface]: Network load OKThe network load has returned to a normal range after being busy.
10282 [User group]-Login via [protocol] locked After several incorrect login attempts, login has been blocked for a limited time. In this case, the User login will be blocked for 15 minutes, the Grid Guard login for 12 hours.

Required Action:

Wait until the given time has expired and then retry login.

10283 WLAN module faultyThe WLAN module integrated in the inverter is defective.

Required Action:

Contact the Service.

10284 No WLAN connection possible The inverter does not currently have a WLAN connection to the selected network.

Required Action:

Ensure that the SSID, the WLAN password and the encryption method have been entered correctly. The encryption method is specified by your WLAN router or WLAN Access Point and can be changed there.

Ensure that the WLAN router or WLAN Access Point is in range and is signalizing correct operation.

If this message is displayed often, improve the WLAN connection by using a WLAN repeater.

10285 WLAN connection established Connection to the selected WLAN network has been established.
10286 WLAN connection lost The inverter has lost WLAN connection to the selected network.

Required Action:

Ensure that the WLAN router or WLAN Access Point is still active.

Ensure that the WLAN router or WLAN Access Point is in range and is signalizing correct operation.

If this message is displayed often, improve the WLAN connection by using a WLAN repeater.

10339 Webconnect enabled The Webconnect function has been enabled.
10340 Webconnect disabled The Webconnect function has been disabled.
10502 Active power limit AC frequency The inverter has reduced its power due to a too-high power frequency to ensure grid stability.

Required Action:

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 the Service.

10901 Self-test start [xx]The self-test is running.
10902 Current disconnection limit for voltage increase protection [xxx] V Preliminary result of the self-test
10903 Current disconnection limit for voltage monitoring lower maximum threshold [xxx] V Preliminary result of the self-test
10904 Current disconnection limit for voltage monitoring upper minimum threshold [xxx] V Preliminary result of the self-test
10905 Current disconnection limit for voltage monitoring middle minimum threshold [xxx] V Preliminary result of the self-test
10906 Current disconnection limit for frequency monitoring switchable maximum threshold |xxx| Hz Preliminary result of the self-test
10907 Current disconnection limit for frequency monitoring switchable minimum threshold [xxx] Hz Preliminary result of the self-test
10908 Current disconnection limit for frequency monitoring switchable minimum threshold [xxx] Hz Preliminary result of the self-test
10909 Current disconnection limit for frequency monitoring upper minimum threshold [xxx] Hz Preliminary result of the self-test
10910 Measured disconnection threshold for the running test point [xxx] [xx] Preliminary result of the self-test
10911 Measured disconnection threshold for the running test point [xxx] [xx] Preliminary result of the self-test
10912 Measured disconnection time for the running test point [xx] Preliminary result of the self-test
27103 Set parameter The parameter changes are being adopted.
27104 Parameters set successfully The parameter changes were successfully adopted.
27107 Update file OK The update file found is valid.
27301 Update communication The inverter is updating the communication component.
27302 Update main CPU The inverter is updating the inverter component.
27312 Update completed The inverter has successfully completed the update.
29001 Installer code valid The entered Grid Guard code is valid. Protected parameters have now been unlocked and you can adjust the parameters. The parameters will be automatically locked again after ten feed-in hours.
29004 Grid parameters unchanged Changing the grid parameters is not possible.

For further manuals, head to the SMA website here.

If you would like any assistance, give Static Electrics a call today on 1300 206 004 and we can help.