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 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 VL-40, SMA Sunny Boy AV-40/41 and SMA Sunny Tripower AV-40 models.

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.

Requirements before initiating sequence.
  1. Physical access to your SMA inverter.
  2. A WiFi-enabled device such as a smartphone or tablet.
  3. Patience, the average reconnection time is 10mins.
  4. PSW Tip: Tea, Coffee or a refreshing beverage of your choice. You’re welcome in advance 😉
Step 1: Connect device WiFi.

Within close proximity to your SMA inverter, begin the sequence by going to the WIFI SETTINGS on your smart phone or tablet. 

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. 
SMA Sunny Portal Solar Monitoring
Step 2: Login.

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

After 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.

Step 3: Start installation assistant.

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.


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 4: Save settings.

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 through the process.

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

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

By the end of this process, you’re probably thinking why isn’t there just a simple WPS button like many other WiFi enabled appliances? We hear you! Unfortunately, many mainstream inverter manufacturers haven’t adopted such modern conveniences yet. 

Take your SMA to the next-level.

The SMA inverter monitoring platform is good, but why not experience next-level solar monitoring insight? 

Add an SMA Energy Meter to view your entire load profile within the SMA Sunny Portal app. View what is currently available in the basic SMA Sunny Portal app plus energy consumption, energy export, true cost savings analysis and more!

Alternatively, forget WiFi dropouts altogether with the comprehensive Solar Analytics 4G cellular energy monitoring solution.

PSW Energy tech support provides this content for PSW Life Support customers, although this being the internet, this support page is open to other SMA inverter users and discussion. PSW Energy customers seeking further assistance can access personalised support here.

In the spirit of building greater knowledge, PSW support staff will endeavour to assist the questions posted below. However, PSW Energy customers will be prioritised in the event of an assistance requirement. 

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1 thought on “SMA Inverter Wifi Reconnect Guide.

    This only works if the SMA is actually transmitting. If it has stopped transmitting for any reason you will need to connect your laptop to the inverter by Ethernet cable and enquire IP address via your browser and reset your Wi Fi.
    But failing all this, as in my case, try turning the inverter off and then back on following correct shut down procedures, wait for green light to go off, and then reboot in reverse order.

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