Service Tip: How to connect a Sunny Boy inverter with built-in WiFi to a local wireless network

by Juan Pena (guest post), , 45 Comments

There are many benefits for connecting your Sunny Boy inverter to the internet, such as real-time monitoring, remote fault diagnosis, easy access to SMA online platforms, among many others. New generation Sunny Boy inverters now come equipped with built-in WiFi and an Ethernet port for monitoring.


Preparation Checklist 
  • Bring your smartphone, tablet or laptop with Ethernet patch cable along to the site preperation

If the installation site is remote, it is your first time commissioning this type of inverter, or it is known the inverter’s WiFi has been deactivated, it is recommended you bring a computer with an Ethernet port and an Ethernet patch cable. This will make the configuration process easier should you experience any difficulty. Otherwise, any smartphone or tablet with WiFi capability should be sufficient.

  • Take a picture of the serial number, PIC and RIDserial number

Information such as the serial number, PIC and RID can be found on the inverter label and the documentation that comes with the inverter. After the device is installed, information on the label may become difficult to read. If this information is not on hand (after leaving the installation site), taking a picture of the label and having it readily available will be useful for future reference. This information is necessary for registration to Sunny Portal and may be needed during commissioning.


Step 1 – connect to the inverter

There are two different ways to connect your Sunny Boy inverter with WiFi to a local wireless network:

a ) Connecting via WiFi using your laptop/smartphone/table
b ) Connecting via an Ethernet cable using your laptop


a ) Connecting via WiFi using your laptop/smartphone/tablet

Access your device’s WiFi connection in order to detect and connect to the Sunny Boy inverter which will be in the format of SMA19xxxxxxxx.




For a brand new installation, the WiFi password (Network Security Key) is SMA12345 (mind the capital letters).

After the initial inverter setup through the ‘Installation Assistant’, this initial WiFi password will permanently change to the WPA2-PSK password written on the inverter label. Be mindful of the password as it is case sensitive. The initial WiFi password will also change to the WPA2-PSK password after 10 hours of operation whether or not the initial setup has been performed.





b ) Connecting via an Ethernet cable using your laptop

Connect the Ethernet cable to the computer and to the inverter port as shown in red in the image below.


ethernet cable using


Step 2 – Log in to the inverter interface

Once you have connected to the inverter via WiFi or with a cable, go to your internet browser and type in the default IP address into the adress bar according to the image below.





This will log you into the Sunny Boy’s web user interface. To perform the initial configuration, you must login as ‘Installer’ by changing the User Group dropdown.

The first time you login, it will ask you to create a password, so make sure you keep the password in your records. The password will be used to register the inverter in Sunny Portal.




Step 3 – network configuration to a local wireless router

Once logged in, you will have the option to setup the inverter using the ‘Installation Assistant’.

configuration with installation assistant



If the “Configuration with Installation Assistant” does not appear, it can be selected from the symbol in the top right-hand corner of the interface shown below.



Sunny Boy 1.5_wlan1


To synchronize the inverter to your local wireless network, select the “WLAN” tab and search for the local wireless network the inverter is connected to. Select that wireless network’s “Settings” icon.




If the wireless network has a password, enter it in the area shown and then click “Connect to WLAN”




The router will then assign an IP address to the inverter if DHCP is enabled in the router. The new IP address will be shown in the network configuration page.


Note the new IP address of the inverter as this is how the customer will be able to login in the future.





Click “Save and Next”. The Sunny Boy inverter has now been connected to the local wireless network. To complete commissioning, continue with the prompts in the Installation Assistant.  The following video gives you an overview of these commissioning steps which are completed by an installer: Configuration of the Sunny Boy 1.5/2.5 via Web UI 



New generation Sunny Boy inverters come equipped with factory-integrated WiFi and Ethernet capability which makes it very easy to integrate into a home network. This makes it ideal for local monitoring via the inverter’s own wireless home network or for online monitoring with SMA’s platforms such as Sunny Portal and Sunny Places. Connecting to the local wireless network is an easy process which can be completed in three simple steps: connecting to the inverter, logging in to the inverter’s user interface and configuring the network to a local wireless router.


Service Tip: How to connect a Sunny Boy inverter with built-in WiFi to a local wireless network
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  1. Al says:

    The WPA2-PSK password isn’t written on the inverter label. Can I choose my own WPA2-PSK password during the initial inverter setup through the ‘Installation Assistant’?

  2. Philip Sapp says:

    I was connected to one of my inverters via WLAN while configuring the network to my home network the connection was disrupted. Now the inverters network is no longer available. What can I do to fix this?

    • Lucas Unbehaun says:

      Hello Philip,

      First, please restart all network units starting with the router. Once this is done, please check if the issue persists.
      Please check in the router if an ip-address has been assigned to the inverter.

      If the inverter is still having troubles connecting to network, please feel free to contact your Service Line. The colleagues will be glad to assist further.

      Kind regards,

  3. MJ Delos Reyes says:

    Does Sunny Tripower has built in WIFI feature as well? If yes, am I going to follow the steps above? Thanks.

  4. Richard says:

    I have years of experience as a data coordinator / analyst in the energy management industry. What is the quickest and easy way to download all data points collected by SunnyBoy 5.0 system from my local network.

  5. André says:

    My SB 1.5 inverter has been running for 6 months with no webconnect problems, the last few days the blue led light on the inverter is not shining (even after tapping) and no data reaches the portal – anybody with a suggestion how to proceed ?

    • Lucas Unbehaun says:

      Hello André,

      If the blue LED is off, please check if the inverter has an active network connection and also access to the internet.
      Log in to your router to check if an IP address has been assigned properly. If the inverter has not an active network connection, please restart the procedure
      “Integrating the inverter into the network”, which is described well in the current operating manual of your inverter.

      Regards, Lucas

  6. sam says:

    I would recommend posting a video of these steps with a person actually doing them. Videos are a lot easier to follow. Thanks!

  7. Byron says:

    Hi, What do you do if you are doing an off grid install in a remote area with cellular access but no wifi? Any way you can get remote monitoring using GPRS or something similar? Thank you.


    how do you connect a dc surge protector to a SMA Sunny tripower stp 20000 TLEE-10 please. thanks for your time

    • Viktoria Mai
      Viktoria Mai says:

      Hello Andrew,

      the STP20000TLEE-10 has no optional SPD Type II surge protectors, only SPD III. Please have a look in this document, there you will find all information concerning this topic.

      Warm Regards

  9. Guido de Vries says:

    Dear SMA,

    This blog is helpful, monitoring of the new generation sunny boy is working fine. But every other day I get a lot of errors like DNS-server not configured, Default gateway not configured. Webconnect error – nog connection. Sometimes the data on the sunny portal and mobile APP are not showing up for the whole day. I tried to open some ports on the router in the clients house but this didn’t help yet.

    Please any advice.

    Guido de Vries
    My phone no. is on

    • Carolin Rost
      Carolin Rost says:

      Hello Guido,
      Please contact our service line or our online service center. The colleagues still need more information about the plant and your concern to solve your individual problem.
      Kind regads, Carolin

  10. Guillermo Bermudez says:

    I have inverter model SB5.0-1 SP-US-40,
    I cannot find the WPA2 password on the label, does it come with built-in wi-fi?

    • Carolin Rost
      Carolin Rost says:

      Hello Guillermo,
      If you don`t have any WiFi- Password there optionally inverter WPS-Function can be used.
      Can be activated double-knocking at inverters chassis =>blue led starts blinking fast for 2min
      Time enough to press WPS- Button on your device (smart phone, tablet), and pairing “device < ->inverter” is taking place automatically.
      Optionally, please plugin an Ethernet-cable in order to entering inverters WEB-UI by putting it`s IP-Adress into a browser.
      It`s WEB-Interface is opened and there, just under “Device Parameter”, you can change inverters WPA-2-Key as well.
      We hope it helps you.
      Kind regards, Carolin

  11. Arnoud Blijdorp says:

    Since February 2016 I have a PV system with the Sunny Boy 1.5-1 VL-40. There were no problems with the communication till two days ago because I got a new WIFI home network.

    So I want to connect the inverter to the new WIFI home network.

    What did I do? Step 1: Connecting the inverter to my laptop by an ethernetcable.
    Then I try to do step 2 and log in to the inverter interface by choosing

    But everything I try….itt will not connect. Constantly I get the message that this site is not available. What’s going wrong?

    Can you help me out? And if there’s an other solution to connect my inverter to the new wifi than I love to hear that!

  12. Oliver Lange says:

    Hi, I want to build an off-grid system with 2 x Sunny Island (split-phase, US) and Sunny Boys. The Sunny Boys will be 100m away from the SI/Battery system.
    What options do I have for communication between SI and SB (e.g., to throttle power production if batteries are full). Does the SI also support Wifi ? With an external antenna will it reach 50-100m line of sight? How about the RS485 connection bus ? Is this still supported by the SB-3.0/3.8/5.0/6.0-US series or only by the TL-US series ?

    • Rhea Terlinden
      Rhea Terlinden says:

      Hi Oliver,
      there is no communication between the battery inverter and the PV inverters necessary.
      The Sunny Islands raise the frequency of the island grid in order to lower the output power of the PV inverters.
      The SI4548-US/6048-US can only communicate via RS485, for example with a Sunny Webbox.
      Best regards

    • Rhea Terlinden
      Rhea Terlinden says:

      Hello Glen,
      there are no SMA wireless communication options available for our old SB US TL-22 or SB US TL-12 units, this is a feature that exists only for the SB US-40 inverter line.

      Possibly they could use the Speedwire Piggyback card to connect the inverter with an Ethernet cable to a (non SMA) external WiFi adapter. Likely this would need to be powered externally as well.
      Even with this, they would not have the nice User Interface of the new Sunny Boys though. They would only have access to the inverter through use of Sunny Explorer software running on a Windows based laptop on the same WiFi network as the inverter is on.
      For the card to be supported, their inverter needs a certain minimum version of the FW. Please see the three rows for the SB6000US (for -10, -11 and -12 models respectively).
      Best regards

      • Richard Wobbel says:

        After 3 years connection lost because of a power dip. I want to reconfigure my whole network, but SMA provides only Windows software. It’s about time (!) to support Mac OS X or iOS. Otherwise I’m forced to by a Windows computer for a 10 minutes job. If not, why don’t you give Apple support? Less security issues….

      • Carolyn Schlosser
        Carolyn Schlosser says:

        Dear Richard,

        Some of our software products are developed for Microsoft Windows operating systems only. Unfortunately, we do not have any information the product you want to use.
        Basically, it is possible to use the free Apple Boot Camp software to install Windows on a Mac system.
        When the computer starts you will be able to select which operating system do you want to start. Both systems have direct hardware access. More information is available at the Apple support site.
        Please note that we can only provide limited support if Bootcamp is being used. Therefore, we kindly advise to contact directly the Apple Support for further assistance.
        Another way to bring Windows on a Mac is to use a virtualization software. There are several programs such as Parallels Desktop and VMware Fusion.
        The big advantage is that you can run the software directly on OS X. Further information is available on the website of the software vendor.

        If you have more technical questions, feel free to contact our service colleagues in Benelux.

        Sunny regards,

  13. Ron Boesl says:

    We had a solar array system & Sunny boy 3 installed Dec 27,2016. The WiFi worked for a while then stopped and started randomly. Some times 2 or 3 weeks with no data to web app. At this time it has not connected since Aug. 23rd. I cannot get help from the company that did install. Is the WiFi signal 2.4 or 5Ghz for the Sunny Boy? If I have to totally reset the system will I lose data or will it fill old data in records as I do want to compare years and date as the climate is changing unless you listen to idiot Trump.

  14. Glen says:

    What can I do to have the data displayed on a screen on the unit. ie some aftermarket meter for reading it.
    SMA has managed to make it nearly impossible to read the data.
    Look at this entire web page it has complicated a simple mechanism. This whole page could read:
    instructions for use.
    1. slide back the cover
    2.. Read the power output.

    But no now I have to have to go and get my mobile device, wait for it to power up, then go thru a few more screens to turn the wifi on,wait for sma to power up open a new screen and find a browser, then wait for a browser to open up, login, (hopefully you can remember yet another password as there is no facility to have the site remember it for you), then go through more screens to find the daily output.
    While this is happening you have to be within a few metres of the inverter or the signal drops out and you have to start again.
    As for the app, well that relies on your home wifi, firstly if you dont have that then there is no app possible, secondly if you do and the router is more than 8m from the inverter the wifi sender on the SMA inverter is simply too weak to penetrate walls so they tell YOU to buy a wifi extended to put near the unit.
    Why I took advice and ever went with SMA I do not know, but SMA needs to redesign this whole system currently it is hopeless

  15. David Milne says:

    My original inverter was knocked out (along with a lot of other things) by a lightning strike about 12 months ago. The original, a Sony, was replaced by a Sunny Boy by the insurance company (or its contractor). I was never given any concise instructions by the installer and I have never been able to make a mobile/ipad connection in order to understand how it has been performing. The only way I can assess performance is to look at my electricity bill and see if I am getting sufficient feedback adjustments. It seems OK but I am concerned that is performance falls off I will not be able to assess the reasons.
    The connection instructions by Mr Pena have been of no used to me. I feel that the vendors of this unit have made absolutely no attempt to make this unit user friendly. I would recommend that there are much better units available, some of which provide direct readout of key performance parameters. Don’t buy a Sunny Boy.

  16. Gard says:

    I had my system installed about 3 weeks ago, and was told how to connect via wifi. It was simple and worked straight up on my ‘phone. I got a USB wifi for my PC, followed the same steps, and that worked too. But by the end of the first week the connection was becoming intermittent, and a few days later it wouldn’t work at all.
    Then it started working again (both phone and PC) for about a day – and now it’s back to “connecting” (but never does) on phone(s) and “Can’t connect to this network” on PC. Is there a way to fix the wifi on these so it actually works with some degree of reliability?

  17. Troy says:

    How do i connect to a network that is open (does not require a password)? I live out in the boonies and there’s no need to secure my wifi network, so there’s no password (and i don’t want to add one). The “Connect to WLAN” button is disabled until a password is entered, but my network has no password, so i can’t connect.

    • Carolyn Schlosser
      Carolyn Schlosser says:

      Dear Troy,

      we regret to inform you that it is not possible to connect to inverter to an “open” Wi-Fi due to security reasons. Alternatively, please connect your inverter via Ethernet to your router.

      We kindly ask for your understanding.

      Sunny regards,

  18. Rayco says:

    Hi, is it possible in SB1.5 to use both network interfaces? Speedwire would be for a LAN comunication with SMA devices such us other SB1.5 and a Smart Meter. On the other hand, WLAN would be for communication with Sunny Portal through WLAN router. I’m having issues to connect to Sunny Portal through WLAN (no connection with the inverters) and I’m suspicious there is a problem using both interfaces, maybe gateway configuration? Thank you!

    • Carolyn Schlosser
      Carolyn Schlosser says:

      Hi Rayco,

      Please contact your installer, he knows your system the best and can help you individually.

      Sunny regards,

  19. Daisy Librojo says:

    Hi! SMA Inverter 1.5 was just installed at my house. The wifi signal is too weak. The blue light is always turned off so a reset is necessary to get back the signal. What could be the problem? Sometimes even if the blue light is ON, the SMA wifi can not be detected (even if I’m standing next to it). Is this normal? Is there a way to connect a wireless booster to strengthen the wifi signal? This problem makes it hard to monitor the system

  20. Anthony Beck says:

    Hi I have a SB2.5 inverter installed 5 months ago. Wifi access has been good until recently but now the inverter’s wifi name no longer shows up in the available wifi list. The inverter seems to be functioning OK apart from this.

    • Carolyn Schlosser
      Carolyn Schlosser says:

      Hi Anthony,

      For technical support, please contact your installer. He knows your system and your local conditions the best.

      Sunny regards,

  21. Pablo Maril says:

    Hello, could I acces via remote my Sunny Boy 2.5 from outside my LAN?
    I have a client with an inverter, and like to modify configuration over remote access. And also my equipement.

  22. Mehrdad says:

    Hi! We installed a SMA inverter 4 months ago.I forget the system password and I can not connect the system to sunny portal. what should I do now?
    Thank you!

  23. Paul Vesely says:

    I have a 250 feet distance to my home from the array (and the SMA Sunnyboy 7.7 inverters) there are two inverters for the 14 kw array. How may I connect to both inverters? Must I use two cat5e or cat6 cables?

    • Carolyn Schlosser
      Carolyn Schlosser says:

      Hi Paul,

      Please contact your installer he knows your system and the local conditions the best.

      Sunny regards,


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