Fronius Inverters are fantastic in terms of being able to self-diagnose issues. Therefore, you may notice that class errors will appear if a problem arises. Below are some of the class definitions:
Class 1 – This class definition typically arises when there is a momentary or brief problem and it is typically caused by the public grid.
Class 3 – This type of issue is caused by a short-term problem of energy being fed into the grid.
Class 4 – This type of error requires an accredited solar installer (such as our team!) to rectify such an issue.
Class 5 – This type of issue does not interfere with any energy feeding, however, it can create some restrictions.
Fronius Error Code 567
If your Fronius inverter sends you the error code 567, it means the electricity voltage is higher than it should be. In this circumstance, the inverter reduces its power output in an attempt to keep the grid voltage within acceptable limits to generate some power rather than shutting off completely. This is a safety feature built into these inverters to help get the best returns possible.
Before troubleshooting this error, it is essential to note that the GDPVR setting is an Australian Standards requirement. As such, the troubleshooting options for this error are limited. There are a few ways in which this error can be rectified, if the issue is showing up frequently, call us today to help solve this issue.
Fronius Error Code 102
If you see this problem, the inverter is telling you that the AC Grid Voltage is too higher than permissible. When this error shows the inverter automatically trips off in an effort to protect itself from any internal damage.
There are two scenarios when your Fronius will show Error 102
Scenario 1 – The error appears about ten seconds after the “Wait Master Ready” goes off during its start-up procedure. This happens when the grid voltage exceeds 253V as specified in the Australian Standards. The best thing to do here is to report the high grid voltage issue to your local electricity provider.
Scenario 2 – This scenario occurs when the grid voltage, as measured at the inverter, has an average voltage higher than 255V over ten minutes. The best solution, in this case, is to call an accredited solar electrician to change the settings of your inverter to 257V. Another solution is to call your original installer to check if you have issues with a voltage rise in your system.
Fronius State 475
If your Fronius inverter gives you a 475-state code, this means that there is an issue with the insulation resistance of your solar system. If you see this code, it is important to contact your solar installer immediately to rectify it.
This can be caused by an array of issues; such as a nicked cable on the roof, a damaged or smashed solar panel or even a faulty rooftop isolator. It is important to note that the longer this error is left unattended, the higher the change of further invertor damage is. Therefore, we recommend following the shutdown procedure and contacting your nearest solar installer.
