Fronius Error Codes
What are Fronius Inverter Error Codes?
Fronius inverters convert DC power from solar panels into usable AC power for homes and businesses. However, like any electrical device, they can develop faults. If you’re a Fronius inverter owner, it’s essential to recognise the signs of abnormal behaviour.
Fronius inverter error codes offer a convenient and efficient way to identify and resolve issues with your device, eliminating the need to consult a solar expert. The inverter’s advanced self-diagnosis capabilities continuously monitor the performance of your solar PV system, providing real-time reports and enabling swift troubleshooting.
The solution to a specific error depends on the error code displayed on the system.
In this article, we’ll provide a comprehensive list of common Fronius inverter error codes and step-by-step guides on how to fix them, empowering you to troubleshoot and resolve issues efficiently.
Common Causes of Fronius Inverter Error Codes
Errors, faults, or failures are common maladies with electrical equipment such as inverters. If your Fronius inverter is displaying an error code, it can easily be resolved if you understand what the error code signifies.
Several factors can cause your Fronius inverter to display an error code.
The most common causes include:
- Grid Voltage and Frequency Disturbances,
- Worn-out Capacitors,
- Inverter Overload,
- Overvoltage and Undervoltage,
- Ultrasonic Vibrations, and
- Faulty Installation.
Luckily, the common causes of solar inverter failures are easily recognisable, and can usually be addressed in no time.
All Error Codes for Fronius Inverters and Solutions to Fix Them
Below is a list of common error codes and faults that are found in Fronius Inverter Models. Each issue has a list of common error codes and an overview of the possible causes. You can use this table to help you solve these minor issues. In the case of a severe fault, contact Inspire Energy for more information.
These error codes are applicable for the following models:
- Fronius Galvo
- Fronius Eco
- Fronius Primo
- Fronius Symo, and
- Fronius Symo Hybrid
STATE CODES FRONIUS PRIMO & SYMO GEN24
Your Fronius GEN24 device displays a certain state code? Below you will find a list of Fronius error codes explaining what the message is about and how to fix the problem.
| Error Code | Error Type | Overview |
|---|---|---|
| 1143 | Inverter error – Internal system operator service is not active or is not functioning | If this error occurs once, the status code can be ignored. However, if this status code occurs frequently, we can provide you with the current beta software (1.13.10-1). Please contact your installer. |
| 1001 | Insulation measurement triggered | After 24 hours of energy continuously being fed into the grid, an insulation measurement must be carried out. This is a normative specification. Grid power feed operation is not possible during the insulation measurement. After the insulation measurement, the inverter starts feeding energy into the grid again. This is purely for your information – no additional measures are required. |
| 1175 | To little DC power for grid power feed operation | To little DC power for feed-in (reason: too little irradiation, e.g., in the morning or evening; poor weather conditions such as rain, snowfall, or fog; snow on the PV modules; heavy shading). This is remedied automatically as soon as the PV generator (PV modules) is being supplied with sufficient power. |
| 1024 | Inverter settings have been changed – Inverter restart required | A setting has been changed that makes restarting the system necessary. This occurs automatically – no additional measures are required. |
| 1030 | WSD (Wired Shut Down) triggered | Error message may
a.) Occur together with other errors, which result in shutdown of the inverter, or b.) Be triggered through actuation of the emergency stop switch/fire brigade switch on the WSD (orange connector on the far left of the data communication PC board), or c.) If no emergency stop switch/fire brigade switch is installed, be triggered due to a missing bridge on the WSD connector. Measures: Should Case a) occur, check on our Solar.web portal whether other status codes have also been triggered at the same time as Code 1030. If yes, please proceed in accordance with the “Cause/solution” description for these status codes. If not, please contact your installer. Case b): Please check whether the emergency stop/fire brigade switch has been triggered. Case c): Please contact your installer. |
| 1196 | Setup values required for the inverter could not be received | This status code only appears when starting for the first time and can be ignored. |
| 1112 | Grid voltage-dependent power reduction | This status code is triggered as soon as the grid voltage exceeds the stored limit value (depending on country-specific regulations). The inverter reduces the power of feeding in as a result due to the grid voltage being too high. This is purely for your information – no additional measures are required.
If the limit is exceeded, at present with firmware 1.12.5-0 the status code is often still displayed repeatedly. We are working on a solution. |
| 1036 | The grid frequency has exceeded a limit value when reconnecting | When connecting to the public grid, for example after restarting the inverter, the grid frequency was exceeded. The inverter will not feed in power until the grid frequency is within the limit again. No other measures are required.
With the current firmware version 1.12.5-0, the status code is very frequently displayed repeatedly. We are working on a solution. |
State codes FRONIUS GALVO, PRIMO, SYMO, SYMO HYBRID UND ECO – hardware
Your Fronius inverter shows an error message? In the following error code list you will find the explanation and solution for the problem.
| Error Code | Error Type | Overview |
|---|---|---|
| 01-0012 | Datalogger ID not available | Reasons & solutions:
In the last step of the Fronius Solar.web wizard in the Fronius Datamanager web interface, it is possible to create a system directly in Fronius Solar.web, add the Datamanager to an existing system or replace an existing data source of an existing system. In this step, a connection is established to Solar.web and it is checked whether the Datalogger ID of this Datamanager already exists in Solar.web, i.e. is assigned to an existing system as a data source. If this is the case, error 01-0012 is displayed in the web interface. The reasons for this may be:
|
| 107 | no AC grid detected | Reasons & solutions:
Status message 107 is sent by the inverter if no AC grid was detected. Please make sure that your inverter is up to date with the latest software version. If status code 107 is also displayed with the latest software version, please ensure that the circuit breaker is switched on. Status code 107 is also displayed if the network was only temporarily unavailable. Was there a power failure or a grid shutdown? This may be a reason for status code 107 being displayed. If the above steps do not resolve the problem, please contact your installer. |
| 306 | Power low | Reasons & solutions:
Status message 306 is sent by the inverter if there is not enough power available from the PV modules. This can happen if the PV modules are covered with snow, dirt or leaves or during the night hours. If the PV modules are clear, make sure that the DC switch at the bottom of the inverter is in the “I” switch position (on). |
| 307 | DC voltage too low | Reasons & solutions:
Status code 307 is sent by the inverter if there is not enough voltage available from the PV modules. This can happen if the PV modules are covered with snow, dirt or leaves or during the night hours. If the PV modules are clear, make sure that the DC switch at the bottom of the inverter is in the “I” switch position (on). |
| 509 | No feed-in for 24h | Reasons & solutions:
Status code 509 is sent by the inverter if there is not enough power available from the PV modules for a period of 24 hours. This can happen if the PV modules are covered with snow, dirt or leaves or during the night hours. If the PV modules are clear, make sure that the DC switch at the bottom of the inverter is in the “I” switch position (on). |
| 522 | DC1 Input Voltage too low | Reasons & solutions:
Status code 522 is sent by the inverter if the voltage from the PV modules is too low to start operation. This can happen if the PV modules are covered with snow, dirt or leaves or during the night hours. If the PV modules are clear, make sure that the DC switch at the bottom of the inverter is in the “I” switch position (on). |
| 523 | DC2 Input Voltage too low | Reasons & solutions:
Status code 523 is sent by the inverter if the voltage from the PV modules at input “DC2” (MPPT2) is too low to start operation. This can happen if the PV modules are covered with snow, dirt or leaves or during the night hours. If the PV modules are clear, make sure that the DC switch at the bottom of the inverter is in the “I” switch position (on). Make sure that PV modules are connected to the input “DC2” (MPPT2), which means that this is physically occupied. In case of doubt, your installer can provide you with information. If the input is not in use, please go to the display of your inverter. There, the input can be deactivated by pressing the 3rd button from the left 5 times and then entering the code “2-2-7-4-2” using the arrow keys and the Enter key. Go to “MPP Tracker 2” -> “DC Tracking Mode” and select “OFF”. If PV modules should be connected, select “AUTO”. If you are unable to solve the problem yourself, please contact your installer. |
| 65000 | DC connection between your inverter and battery interrupted | Reasons & solutions:
The status code 65000 is sent by the inverter if there is no connection between the inverter and the storage system or if it has been interrupted. Check that the DC disconnector below the inverter is switched to position “I” (On). Also, verify that the storage system has been turned on. Perform an AC/DC restart on the inverter:
|
| 994 | Energy comparison not possible | Reasons & solutions:
Status code 994 is registered if there is no data available for the “Earnings comparison” function that can be compared. Check Solar.web under “Settings” –> “Components” to see whether the DC power of the inverters has been specified correctly. Check the settings for the “Earnings comparison” function under “Settings” –> “Service Messages”. Check that the settings for deviation, threshold and inverter selection (DC channels) have been correctly stored. Your installer can give you the correct values and settings. If you are unable to solve the problem yourself, or if you are unsure of a point, please contact your installer. |
| 995 | Battery warning | Reasons & solutions:
The status code 995 is registered on Fronius Solar.web if no data is received from the storage system for a specified time. You can manually adjust the time period for receiving this service message on Fronius Solar.web under “Settings”–> “Service messages” –> “Battery blackout detection”. Please note that live data (bubble chart) is not taken into account. Verify that the storage system has been set to “Standby” mode. Check whether your Fronius Solar.web system might be “offline” and whether other status codes have been registered under “Service messages.” If your system is “offline”, please navigate to the “Solar.web offline” area. If your system is “online” and the status of the storage system is not in “Standby” mode, please contact your installer immediately. |
| 996 | Communication error between the datalogger and Fronius Solar.Web | Reasons & solutions:
Status code 996 is an indicator of a communication error between the inverter and Fronius Solar.web. This status code is displayed when your system is offline for 12 hours, between the end of the day and the start of production the next day. If the connection to the inverter fails due to an unstable Internet connection, you can increase the blackout detection time on Solar.web under “Settings” –> “Service messages” –> “Edit”. Increase the blackout detection period to at least 12 hours. If your system is “offline” for more than 12 hours, check that your router is turned on and that there is an Internet connection. Restart your router. If your system is still offline, do the following:
To set up the connection to the Datamanager via LAN: Use a Torx screwdriver to remove the lower grey cover of the inverter. Use a LAN cable to physically connect your laptop to the Datamanager. Next to the four LEDs arranged in a square on the Datamanager, set the small DIP switch to the “A” position (left side). Open a browser (preferably Google Chrome) on your laptop and enter the IP address “169.254.0.180” in the address bar. Confirm with the Enter key. To connect to the Datamanager via WLAN access point: Navigate to and activate the inverter display under “Setup” -> “Wi-Fi Access Point”. Connect to a laptop, tablet or smartphone and the visible WLAN network “FRONIUS_2XX.XXXXX”. Open a browser (preferably Google Chrome) on your laptop, tablet or smartphone and enter the IP address “192,168.250.181” in the address bar. Confirm with the Enter key. Datamanager 2.0: If you are unable to solve the problem yourself, or if you are unsure of a point, please contact your installer. |
| 997 | Energy comparison deviation | Reasons & solutions:
Status code 997 is triggered on Fronius Solar.web by the “Earnings comparison” function. If there is a defect on the PV generator side or if your PV modules are covered with snow, you will receive this status code as a result. Check Fronius Solar.web under “Settings” –> “Components” to see if the DC power of the inverters has been specified correctly. If you are unsure whether the values are displayed correctly, please contact your installer. |
| 999 | No Contact To Inverter Last 24h | Reasons & solutions:
Status code 999 is triggered by Fronius Solar.web if inverter data is not recorded on Solar.web for a certain period of time. You can adjust the time span under “Settings” –> “Service messages” –> “Inverter blackout detection”. Check the “DATCOM status” on the display of the inverter under “Setup” –> “DATCOM”. If the status is “Error”, please contact your installer. |
STATE CODES FRONIUS GALVO, PRIMO, SYMO, SYMO HYBRID UND ECO – SOFTWARE UPDATES
When updating the software of your inverter, an error code is displayed? Below you will find a list of error messages with a description of how to resolve the problem.
| Error Code | Error Type | Overview |
|---|---|---|
| 731 | USB flash drive initialisation error | Reasons & solutions:
|
| 732 | USB flash drive overcurrent | Reasons & solutions:
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| 733 | No USB flash drive connected | Reasons & solutions:
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| 734 | Software not recognised on USB flash drive | Reasons & solutions:
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| 735 | Software on USB flash drive is not supported | Reasons & solutions:
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| 736 | USB flash drive write or read errors | Reasons & solutions:
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| 737 | Unable to read software from USB flash drive | Reasons & solutions:
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| 738 | Log file cannot be created on the USB flash drive | Reasons & solutions:
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| 740 | USB flash drive not recognised | Reasons & solutions:
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| 741 | Write error for the recorded data on the USB flash drive | Reasons & solutions:
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Fronius inverters can also generate notifications and error codes for other abnormalities: communication errors, sensor faults, having key functions disabled, memory errors, incompatible components, etc. Technical support is recommended if your inverter is constantly displaying error codes, regardless of their nature. Get in touch with Inspire Energy if you have any questions.