Fronius error code 996 occurs when your Fronius solar inverter losses its connection to the internet via your router. This can occur because you have changed internet service provider since the inverter was installed or because the Wi-Fi signal strength at the inverter location is weak or intermittent.
If you have not changed internet service provider or changed your Wi-Fi password in your router you can try to reset the inverter by simply turning off the AC solar supply main switch which should be located either next to your inverter or in your switchboard. After 30 seconds turn the AC solar supply main switch back on and the inverter should reconnect to the internet.
If you have changed internet service provider or the password and you have a Fronius Galvo, Primo or Symo inverter then you will need to contact us for detailed instructions on how to change the network settings in the inverter. Please note that if you are asked to provide an admin password you will need to contact your installer for this.