Service Tip: Activating and Deactivating the WLAN interface on Sunny Boy Inverters with Built-in WiFi

by Shahla Flynn (guest post), , 23 Comments

New generation Sunny Boy inverters provide customers with great flexibility due to their integrated WLAN and Webconnect interfaces. This allows direct access to the user interface of the inverter for smooth commissioning and configuration. It also provides an option for local monitoring via the inverter’s user interface or online monitoring via Sunny Portal and Sunny Places. However in some instances a customer or installer may prefer to turn off the WLAN function in the inverter (e.g. privacy, not used, etc.). The step by step procedure to switch off and switch on the WLAN in the inverter is described below.

 

PREPARATION CHECKLIST:

Bring your smartphone, tablet or laptop with Ethernet patch cable along to the site

wifi1Whether the installation site is remote, or if this is the first time commissioning this type of inverter, or it is known the inverter’s WiFi hotspot has been deactivated, it is recommended that you bring a computer with an Ethernet port and an Ethernet patch cable, as it will make the configuration process easier in case you experience any difficulty. Otherwise, any smartphone or tablet with WiFi capability should be sufficient.

The WLAN function is activated as standard at the time of manufacturing. To deactivate this function, it is necessary to access the web user interface of the inverter. First, make sure the inverter is commissioned. You will then need to access the inverter user interface using either the following two methods:

 

a) Connecting via WLAN

You will need to have a computer, a tablet or a smartphone with Wi-Fi capability.

 

b) Connecting via Ethernet

You will need a computer with an Ethernet interface.

Below is the detailed description of how to access the inverter user interface.

 

a) Connecting via WLAN

Search for Wi-Fi networks in your device. You will see the inverter network as SMA[serial number]. Connect to this network and enter the password. The Wi-Fi password for the first ten hours of operation is SMA12345. After this, use the WPA2-PSK password of that particular inverter which you will find on the inverter type label on the right hand side of the unit. Once you have successfully connected to this network, open an internet browser and enter the IP address in the address bar according to information below and press Enter.

3

This will take you to the login page of the inverter user interface. Log in as an Installer. If this is the first time you are logging in, you will be asked to create a password. Otherwise use the password set by the installer at the time of commissioning.

 

b) Connecting via Ethernet

Connect the inverter directly to a computer via an Ethernet patch cable. See below for the Ethernet connection point on the inverter.

Location of Ethernet connection points on Sunny Boy inverter models

Location of Ethernet connection points on Sunny Boy inverter models

Open an internet browser and enter the IP address in the address bar according to information below and press Enter.

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This will take you to the login page of the inverter user interface. Log in as an Installer. If this is the first time you are logging in, you will be asked to create a password. Otherwise use the password set by the installer at the time of commissioning.

 

Switching the WLAN interface off

Once logged in to the inverter user interface, you can switch off the WLAN function. However, be mindful that by doing so, future access to the inverter user interface will be possible only via an Ethernet connection. This means if you need to re-activate the WLAN function you must connect the inverter directly to a computer or a router via Ethernet.

Procedure:

1. On the menu, click on “Device Parameters” and then click on “Editing Parameters”.

2. Click on “System Communication”, then select “WLAN”.

Device Parameters

Device Parameters

3. To deactivate the WLAN direct connection, select “Soft-access-point is turned on” and set this parameter to “No”.

4. To deactivate the WLAN connection in the local network, select “Activated” and set this parameter to “No” ”.

 

 

Switching the WLAN interface on

To switch on the inverter’s WLAN function (if it has been deactivated), you will require either a computer or laptop and an Ethernet patch cable. Once the inverter is connected to the computer or laptop via Ethernet, open an internet browser and enter the IP address in the address bar according to your device (see below) and press Enter.

neuProcedure:

  1. On the menu, click on “Device Parameters” and then click on “Editing Parameters”.
  2. Click on “System Communication”, then select “WLAN”.

wifi5

  1. To activate the WLAN direct connection, select “Soft-access-point is turned on” and set this parameter to “Yes”.
  2. To activate the WLAN connection in the local network, select “Activated” and set this parameter to “Yes”.

wifi8

 

Conclusion

New Generation Sunny Boy inverters are equipped with a WLAN interface as standard. While this function facilitates easy system configuration and monitoring using WiFi, customers sometimes prefer to deactivate the WLAN function. The WLAN function can be easily deactivated by accessing the inverter user interface. However, once the WLAN interface is deactivated, it will only be possible to re-activate the WLAN by connecting the inverter directly to a computer or a router via Ethernet.

 

Service Tip: Activating and Deactivating the WLAN interface on Sunny Boy Inverters with Built-in WiFi
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23 Comments
  1. John says:

    What is the maximum length of the Password the 3.0 can manage? The WiFi router password is 63 characters and the inverter fails to connect but when I shorten it to say 20, it connects. This is a little too weak for safe use. Can a firmware upgrade be implemented to increase the password length??

    Thnak you,

    John

    Reply
    • Jennifer Rößler
      Jennifer Rößler says:

      Dear John,

      The length of the wi-fi password can be up to 63 characters. Please check the wi-fi settings of your inverter again.

      Please do not hesitate to contact our service line if the issue persists. Our colleagues will be glad to assist further. See an overview of all service line phone numbers here.

      Kind regards, Jennifer

      Reply
  2. Jarle Johannessen says:

    Is it possible to after mount the WLAN interface in a SI 4.4M-11?
    What will I need?
    Is this a part of the SMA Webconnect-Interface SWDMSI-NR?

    Please advice.

    Reply
    • Jennifer Rößler
      Jennifer Rößler says:

      Hello Jarle,
      it isn`t possible to add a W-LAN interface in the Sunny Island 4.4M-11.
      The W-Lan interface is only for the new Sunny Island -12 and is directly on the board of the new one.
      Kind regards, Jennifer

      Reply
  3. Mike says:

    I am hard wired to the SMA. Blue led is on solid. Cannot connect to IP 169.254.12.3
    My WIFI on the SMA somehow turned itself off when I was changing passwords setting up the connection over Wifi.

    Please advise.

    Thanks,

    Mike

    Reply
    • Jennifer Rößler
      Jennifer Rößler says:

      Hello Mike,
      as this is an individal problem, please contact our Service. They will be glad to asisst you in a personal dialog, so this can be solved.
      Kind regards, Jennifer

      Reply
  4. Donald Lew says:

    installed sunny boy 6.0 inverter 10/2016, PV panels went bad, today installed new PV panels, having trouble activating wif on the inverter and linking to sunnyportal.com. Suggestions? I am the homeowner.

    Reply
  5. ajmal says:

    Hi,

    Once the inverter is connected to the WLAN, does the original WiFi network SMAxxxxxxx get switched off? I’m connected fine to my local wireless network via WiFi but i no longer see the original WiFi network of the inverter anymore when I scan for WiFI networks on my devices. Is that normal?

    Thank you.

    ajmal

    Reply
    • Rhea Terlinden
      Rhea Terlinden says:

      Usually, the integrated soft access point of inverters with built-in WiFi will not be deactivated once you have connected it to the customers network.
      However, since this is an adjustable feature, you will be able to activate this option again via web interface at any time.

      Or you can activate the WPS function by tapping on the enclosure lid twice in quick succession. The open interface will then be signalized via the rapid flashing of the blue LED on the inverter.

      Please bear in mind that the WiFi function for the direct connection/access point as well as the WiFi connection in the local network can only be switched on via Ethernet connection.
      If the WiFi function was previously switched off completely, the inverter must be connected to a computer or router via Ethernet.

      Kind regards,
      Rhea

      Reply
  6. Dinesh says:

    Hi I just installed solar with sunny boy inverter I am trying to connect wifi on my settings but it says on internate connection on my sunnyboy settings

    Reply
  7. Marlies Gordon says:

    Hi there,
    I have my inverter working through our wifi fine, but i need to add a password to the wifi.
    As soon as i add the password to our wifi the inverter cannot access my local wifi anymore.
    When i try to find the built in wifi (SMA19…….) it doesnt show in my network list, so I cannot access the inverter wirelessly. Does this mean I can only access and add a password via the ethernet cable direct to my computer? Or is there a way to “wake up” the inverters built in wifi and access it from my ipad?

    Reply
    • Annika Linke
      Annika Linke says:

      Hi Marlies,
      the inverter is equipped with an activated WLAN interface as standard. If you do not want to use
      WLAN, you can switch the WLAN function off and switch it on again whenever needed. In doing
      so, you can switch the WLAN direct connection and the WLAN connection in the local network on
      independently of each other.

      If you switch off both the WLAN function for the direct connection and for the connection in
      the local network, access to the inverter user interface and therefore reactivation of the WLAN
      interface is only possible via an Ethernet connection.

      Switching WLAN Off
      If you would like to switch the WLAN function off completely, you must switch off both the direct
      connection and the connection in the local network.

      Procedure:
      • To switch off the direct connection in the parameter group PV system communication >
      WLAN, select the parameter Soft-access-point is turned on and set this to No.
      • To switch off the connection in the local network in the parameter group PV system
      communication > WLAN, select the parameter WLAN is turned on and set this to No.
      Switching WLAN On
      If you have switched the WLAN function for direct connection or for connection in the local network
      off, you can switch the WLAN function back on in accordance with the following procedure.
      Requirement:
      If the WLAN function was previously switched off completely, the inverter must be connected
      to a computer or router via Ethernet.
      SMA Solar Technology AG 9 Configuration of the Inverter
      Operating Manual SB30-50-1AV-40-BE-en-10 57
      Procedure:
      • To switch on the WLAN direct connection, in the parameter group PV system
      communication > WLAN, select the parameter Soft-access-point is turned on and set this
      to Yes.
      • To switch on the WLAN connection in the local network, in the parameter group System
      communication > WLAN, select the parameter WLAN is turned on and set this to Yes.

      Kind regards, Annika

      Reply
  8. David Ifield says:

    When I first got the inverter, I was able to access it via my smartphone using the IP address 192.168.12.3. With help from the installer, I then changed this to access via my home LAN but in doing so, it disabled the 192.168.12.3 access. For security reasons, I now wish to deactivate the home LAN connection. Once done, will the 192.168.12.3 again become accessible?

    Reply
    • Anna Homberger
      Anna Homberger says:

      Hi David,
      In case that you have disabled the access via Wi-Fi, the inverter will still be accessible via ethernet.
      If the IP-address has been changed, you have to reconfigure your PC to the same network range.
      Please refer to the installation manual if you have further questions.
      Kind regards, Anna

      Reply
  9. Moath says:

    Hi,
    I installed an inverter 3.6 sonny boy “the smart one ” since 11 months ago, I was able to dedicate the wifi signal from inverter 10 meters away from it, but now I am not able to dedicate the signal from 1meter distance.
    Kindly your advice here.
    Best Regards,

    Reply
    • Anna Homberger
      Anna Homberger says:

      Hi Moath,
      please do not hesitate to contact your installer, he will help you.
      Sunny regards, Anna

      Reply
  10. Barry Goldman says:

    wifi on SB5 inverter does not seem to be working.
    I have reset Inverter (switch off for 5 minutes) still get same response:-
    Wifi SMA1992063505 is found but still get message “No Internet Connection”.
    And when I use a browser on computer I get message “192.168.12.3 didn’t send any data”
    Note that there is no service provider currently operating here in Townsville.

    Reply
    • Carolyn Schlosser
      Carolyn Schlosser says:

      Hi,

      Please contact your installer. He knows your system the best and can help you locally.

      Sunny regards,
      Carolyn

      Reply
  11. KJ Lammers says:

    Hello,

    My SunnyBoy SB1.5-1 VL-40 worked perfectly fine. Until the 16th of july I received daily logs of the yields. Since the 16th the logs stopped. The plan of the sunnyboy shows up on the available networks, but I’m unable to connect with it using the ip-adress. I’ve also tried to connect to the inverter with a network cable but was still unable to connect with it using the ip adress specified in the manual or in the router. I need info on how to connect with the inverter, thanks Klaas-Jan

    Reply
    • Carolyn Schlosser
      Carolyn Schlosser says:

      Hi,

      the best way is to contact your installer, he knows your system and the local conditions the best. If he is not able to help you feel free to sign in on our Online Service Center.

      Sunny regards,
      Carolyn

      Reply

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