Reasons & solutions:
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:
De-energise the inverter on the AC side (circuit breaker or residual
current circuit breaker, etc.).
Switch the DC disconnector below the inverter to the “O” (Off) position.
- Wait a few minutes.
Switch the DC disconnector back on. Then switch on the grid on the AC side (secure circuit breakers and
residual current circuit breakers).
your system is still offline, open the Datamanager web interface and reconnect
to your home network (router). Under “Settings” à, select “Network” and select your
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
Connect to a laptop, tablet or smartphone and the visible WLAN network
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
If you are unable to solve the problem yourself, or if you are unsure of a point,
please contact your installer.