SMA Inverter Wifi Reconnect Guide.

Is your SMA inverter no longer producing data? Let’s get that back for you with the PSW Energy SMA Inverter WiFi Reconnect guide. The great news is that this is often only ever a minor issue. Chances are the solar energy system is still producing power,  you simply can’t see this information being logged anymore through the SMA Sunny portal.

SMA Solar Inverter By Perth Solar Warehouse

Likely causes.

Ask yourself the following questions;

  • Was there a blackout or a power outage recently?
  • Has the modem been switched off for any reason recently?
  • Have you recently changed to the NBN?
  • Has the modem been changed or upgraded? 
  • Has the solar system been switched off recently?
  • Has an electrician been working on the property? 

If you answered yes to any of the above, then there is a high chance your SMA inverter has disconnected from your WiFi network. In a nutshell, your inverter is now trying to communicate through an IP address which is no longer available from your modem.

It’s important you know the steps to reconnect any WiFi based device as IP addresses will continue to change over the systems lifetime. Here is how to get your SMA inverter WiFi reconnected. 

IMPORTANT: If your inverter has disconnected from your WiFi network, this will not affect your solar energy systems ability to produce energy. It will only prohibit  the communication to the SMA Sunny Portal cloud server which allows you the view your solar production information.

SMA inverter WiFi reconnect guide.

The following SMA inverter WiFi reconnect guide is applicable for all SMA WiFi enabled inverters which include the SMA Sunny Boy AV-40/41 and SMA Sunny Tripower AV-40 models.

Step 1.

To complete the reconnection of your SMA inverter, you’ll need access to the inverter and a WiFi-enabled device such as your smartphone or tablet. 

Go to the WIFI SETTINGS on your device, select the SMA inverter WiFi network “SMA19********” and enter the WPA2-PSK password located on the label on the right-hand side of the inverter. 

Once you’ve successfully connected to the inverter WiFi, open up your preferred WEB BROWSER (such as Chrome or Safari) on your device and type in the default IP Address: “” into the search bar and press enter. 

After the the IP address has been confirmed by pressing the enter key, a message may appear indicating that the connection to the user interface of the inverter is not secure. SMA Solar Technology AG guarantees that the user interface is secure.

SMA Sunny Portal Solar Monitoring

Step 2.

Once successfully logged into the SMA Sunny Portal APP, click the MENU button on the top right side of your screen, and select USER SETTINGS .

Click START THE INSTALLATION ASSISTANT and scroll down to the TYPE OF COMMUNICATION option and click the WLAN tab, then select ACTIVATE WLAN

Tap the COG   icon on your network and select WLAN SETTINGS. This will take a moment to load. Scroll to the top of the screen and make sure your network is connected.

Step 3.

At the bottom of the screen, select SAVE and the NEXT button on each page until you reach the SUMMARY page. Keep in mind, DO NOT change any other details while going going through the process.

Press the CONTINUE button at the bottom of the SUMMARY page. Your inverter is now connected to your network!

Prefer video? Rest your eyeballs on this simple video of the SMA Inverter Wifi Reconnect Guide.

One reply on “SMA Inverter Wifi Reconnect Guide.

  • George Grossman

    I’ve just moved to the NBN with a new router and am having trouble connecting my SMA 1.5 inverter to the new network. I’ve tried to follow your protocol above, but as I don’t have the installer password I’m unable to access the appropriate interface. All I can access is the User interface which doesn’t allow me to access the WLAN parameters. Any all help would be greatly appreciated.


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