Questions and Answers on Discontinuation of the Sunny WebBox

This post was originally published in 2015. The tips and techniques explained may be outdated.

At the end of October 2015, we will be discontinuing some of our communication solutions such as the Sunny WebBox. This announcement led to some questions. First of all, thank you for your feedback. As announced, we would like to respond to the key points you raised in this Q&A document.


Your concerns were the following:

• What’s going to happen with the service for defective devices, even for very old systems?
• Is there a successor device for the Sunny WebBox in the pipeline?
• What’s going to happen with RS485 communication?
• Basic criticism that the Sunny WebBox is not compatible with the Sunny Home Manager and does not contain any sensor technology, and that the SMA Cluster Controller is too expensive for private residential PV systems.

SMA will continue to supply the Sunny WebBox to wholesalers until the end of October 2015.

SMA will continue to supply the Sunny WebBox to wholesalers until the end of October 2015.

SMA will continue to supply the Sunny WebBox to wholesalers until the end of October 2015.

Our answers:

Basically, the introduction of SMA Webconnect and Speedwire communication has led to a slump in demand for monitoring devices that communicate with inverters via RS485. Every new Sunny Boy is fitted with a Webconnect interface as standard, enabling a simple and cost-effective connection to Sunny Places and Sunny Portal without the need for any additional devices. This means that new systems are equipped with all the basic monitoring functions.
For systems that focus on self-consumption, with the Sunny Home Manager, SMA offers a comprehensive energy management system. The SMA Cluster Controller assumes advanced monitoring tasks, particularly in commercial applications, with a local display and the option to connect commercially available sensors and a direct marketer interface. In addition, the SMALL version, which has been available since spring 2015, offers a cost-efficient alternative specially designed for commercial or residential PV systems.
For existing systems with a Sunny WebBox, all warranty services will of course be honored during the factory warranty period, and additionally we will also be offering repair service.
Customers who are already operating a system with SMA inverters without monitoring, but who want to purchase a monitoring solution with Sunny WebBox in the near future will still be able to do so through wholesalers.
In addition, SMA is also examining the possibility of combining existing systems using RS485 communication with current and new communication solutions that include advanced functions and services. As soon as we have a decision on this, we will notify customers here on the blog page.
We hope we’ve been able to respond to some of your key issues in this document. If you have any further questions, feel free to use the comments function.


  1. Kris
    Kris says:

    Do the new inverters with integrated Webconnect have FTP Functionality? If not, how do we get this? FTP Functionality has been been a staple for us in buying WebBoxes. Please let me know.

    • Julia Stunz
      Julia Stunz says:

      Hi Kris,

      The new inverters of the classes 1.5/2.5 and the 5.0/6.0 US with the new web interface haven`t FTP/FTP push neither they aren`t compatible with the webBox.
      The data can be only collected by the sunny portal or modbus.

      Kind regards,

      • Chandler Heath
        Chandler Heath says:

        Hi Julia,

        So to confirm, the Sunny Boy 5000TL-US-22 will support Modbus with Webconnect and will no longer require a WebBox? I have a PV Supervisor right now.



      • Carolin Rost
        Carolin Rost says:

        Hello Chandler,
        Please contact our Service Team in America by email ( or telephone (+1 877-697-6283). Our colleagues will help you.
        Kind regards,

  2. Jonathan Gleich
    Jonathan Gleich says:

    Hi there, I just has a sunpower 12.4kw system installed with two SB 6000TL-US-22’s (us80) manufactured:09/2015 with a white sunpower cover.

    They have the older RS485 connector on them, is there a way to get a fastwire/Webconnect/bluetooth
    device to replace the older tech?

    My dealer has been unable to give me an answer


    • Justin Dyke
      Justin Dyke says:

      Hi Jonathan,

      I am sorry that your local SunPower dealer hasn’t contact you about this, but that is the only way to determine the type of equipment upgrades are possible. SunPower-branded Sunny Boy inverters use a slightly different communication protocol than the normal Sunny Boys and as such, the communication equipment that goes with it is specific to those systems and not sold by SMA.

      All the best,

  3. Travis
    Travis says:

    Is there a solution for older Sunny Boys without the newer communications protocol? We have a client with a Webbox that hasn’t been working properly and they would like a replacement. Are there compatible non-SMA communications products that can be used with the old RS 485 Sunny Boys?

  4. David S Martin
    David S Martin says:

    We have a system with 15 SMA inverters (5 each Sunny Boy 9kw, 10kw and 11kw) which have only RS485 connectivity. Our original monitoring system from Locus Energy has failed. What are our options?

    • Viktoria Mai
      Viktoria Mai says:

      Dear David,

      we have basically two options, you can use RS485 interfaces with an Gateway from SMA to Speedwire and as Datalogger an Cluster Controller. On the other hand, you can directly use Speedwire interfaces with a Cluster Controller.
      Please contact your local SMA provider, tell him the serial number and look for the best solution of your plant.

      Warm Regards

  5. David S Martin
    David S Martin says:

    I understand that SMA plans to introduce a new product to facilitate communication between inverters with the RS485 card and the Webconnect box. Can you share any information?

  6. earl leo
    earl leo says:

    Is there a difference between the RS485 and Speedwire/webconnect in terms of reliability ? or which is whih

  7. Steve
    Steve says:

    I have a SB 7000-US inverter in my PV system with RS 485 and would like to have remote monitoring / logging. What are my options now the WebBox has been discontinued ?

    • Jennifer Rößler
      Jennifer Rößler says:

      Hello Steve,
      As mentioned in the article, the alternative for the Sunny Webbox would be either the SMA Cluster Controller or the Sunny Home Manager. You can find more information on
      Kind regards, Jennifer

  8. Grace Robertson
    Grace Robertson says:

    Here at LightWave Solar, we have not yet installed a cluster controller. But we might need to for an upcoming installation at a museum where they would like to display their monitoring site. Can you provide a screenshot of the “public kiosk” view?

    • Carolin Rost
      Carolin Rost says:

      Hello Grace,
      Unfortunately, we can not answer your question because we do not exactly know what you mean. Can you describe your request more detaily, please?
      Kind regards,

    • Rob Lamendola
      Rob Lamendola says:

      Hi all, Install inverters, Cluster Controller, and setup your ‘Plant’ on Sunny Portal. Once logged into SMA Sunny Portal, all available screens and views (i.e. PV System Overview, Power output, Energy, etc.) have, at the bottom of the page, a section titled “URL of the Page:”. Therefore, if the client wants a KIOSK in lobby area, you can just have the KIOSK (with a standard web browser) default to only show the unique URL address for the view they’d like displayed on the KIOSK. This URL can also be nested in client’s website to showcase the solar system. We did this on a couple public school projects. Shine On, Rob~

  9. Bob Bracalente
    Bob Bracalente says:

    So I just had a new solar system installed last month featuring three Sunny Boy inverters. The installer is waiting on RS-485 cards to connect these to a Sunny WebBox which they are also providing.

    My question is…this blog post is circa-2015. For a brand-new installation, why am I apparently getting 2+ year-old equipment, as well as the (apparently) obsolete Sunny WebBox??

    • Rhea Terlinden
      Rhea Terlinden says:

      Hey Bob,
      we can´t answer this question, therefore you have to ask your installer for more information.

      Best regards

  10. Lynly Gilman
    Lynly Gilman says:

    I have 2 sunny boy SB6000U inverters with the RS485 cards installed. I was told I need the sunny webbox and purchased a new old stock. Confirmed it with a representative that its correct. Apparently he overlooked that it was a Bluetooth BT-20. The RS485 cards are wired not Bluetooth. I need a data logging system for my inverters. What’s available for me? Can I used an aftermarket bluetooth adapter with dip switches instead? If so will the Sunny Webbox BT-20 work with my inverters?
    Lynly G.

    • Carolyn Schlosser
      Carolyn Schlosser says:

      Hi Lynly,

      Please contact your installer. He is able to tell you if your inverter has a bluetooth slot.

      Sunny regards,

  11. Scott Fellhoelter
    Scott Fellhoelter says:

    I have the 8000US and need to monitor the system via Sunny Portal, Is the WebBox 485 Blue tooth the solution which is best? If not, What is? The Suntrol system they originally installed has Suntrol software which is no longer supported to monitor my Plant. How Can I best and what least expensive options do I have now?

  12. Chris Kelman
    Chris Kelman says:

    I need advice on how to link in a SI 8.0H-12 to my existing system (to replace a SI5048) The system includes 2 x SMC 6000, a SB5000TL-21, SMA weather station and RS485 WebBox. The problem is that the ComSMA adaptor does not work on Sunny Island models after H-11.

  13. Lampra
    Lampra says:

    What would be the replacement of the Webbox with Bluetooth (i.e. without RS485 cards installed)?
    I don’t seem to be able to identify any Bluetooth capabilities of the cluster controller. Is there any add-on (eg commercial usb bluethooth) that could be used along with the cluster controller for a system with six inverters?
    Thank you

  14. Andrew
    Andrew says:

    I have a supercap battery and need a specific charge voltage range. Am I able to configure my sunny island 6.0H to charge this device to operate between min 44VDC and 54VDC only with a max charge current of 100A? Outside this range will cause damage.

  15. Simon Ojsteršek
    Simon Ojsteršek says:

    I”m asking for information about modbus TCP protocol on Webbox module. Is modbus TCP comunnication avilable on all Webbox modules?

    Best regards, Simon

  16. Veronica
    Veronica says:


    My system is a SB6000TL-US-22 with a 485i module, with 3 arrays facing 2 directions (S&W).
    I want to install monitoring to data log as many parameters as possible. I think I have assembled a high cost and lower cost alternative and am simply asking if these two setups are missing equipment, ex: a piggyback card. Perhaps one system has significantly less data available to it.
    #1 Most expensive:
    Install Tigo optimizers, Install Sunny WebBox, connect WebBox to Sunny Portal and can use Sunny Explorer as well. Install Sunny SensorBox, Anemometer, and the 2 temp sensors to Sunny WebBox. I think I’m missing the connection of the brain that reads the optimizers and how it sends that data to the inverter (Bluetooth PiggyBack card or hardwired?) Can an inverter use a module like 485 or WebConnect and a Piggyback card at the same time?

    #2 Less expensive
    Swapping out the 485 mod for the WebConnect mod and relying on the Sunny Portal website, but how to get the Sunny Sensor data to the Sunny Portal. Does the Sunny Portal even have the capability to accept and do anything with Sunny Sensor or 3rd party sensor data?
    #2A Can the WebConnect mod also communicate with the Sunny Explorer software?

    As you can see my biggest wrinkle is the Sunny Sensor and I figure you’re likely going to remind me it is discontinued, fortunately I already have one. Is the only piece of equipment the Sunny Sensor connects to the Sunny WebBox or is there another?

    In my mind the SensorBox is critical for accurate data. Using the local airport that is 10 miles away seems very inaccurate. The wind speed at the open airport compared to my multi angled roof with other houses in the way surely effects panel temps and lets not forget the clouds.

    Any help greatly appreciated.

  17. Lauren
    Lauren says:

    I have a SB2500 installed in 2008 and want to add a monitoring system to the device. What options are available to me?

    • Anke Baars
      Anke Baars says:

      Hi Lauren, Sorry for the late reply. You can easily monitor your system via our community portal Sunny Places or. More detailed monitoring data you´ll get with Sunny Portal. For both monitoring solutions you just need to register your PV plant. I hope, this helps.
      Kind regards, Anke

  18. Jurassic
    Jurassic says:

    Good day The operating system of the
    Sunny WebBox is damaged is there any way to fix this problem by formating the webbox?

  19. Jerry Spencer
    Jerry Spencer says:

    I am in the UK and need to calculate the amount of generated solar electricity being used in a building before it is exported to the grid. I was told a Sunny Webbox could be simply clamped onto the main distribution cables but is this right and what’s the replacement solution? It’s for a 40kWp system with two distribution boxes into the building

  20. Jim Bandy
    Jim Bandy says:

    I have recently purchased two new, unused Sunny Island 6048-us-10 inverters. The manuals reference WebBox only. I have read the thread above. I am trying to understand whether my units have any capability for communication whatsoever? Thanks, Jim

  21. Mark Thornley
    Mark Thornley says:

    I have had a Sunny Webbox connected to my SB3800 inverter for around two years, successfully uploading data to Sunny Portal. In October last year (2019) the upload began to fail at every (15 minute) attempt. The test options for the Sunny Portal connection from the Webbox still succeed, and I can connect to the Webbox from Sunny Portal. Has something changed in Sunny Portal to disable uploads from Webboxes?

  22. Guy
    Guy says:

    I have 2 malfunctioning Sunny-Webox devices (one of them was never used).
    How can I contact the repair services you are offering for the devices?

  23. Keith
    Keith says:

    What is the communication equipment available for the sunny island si6048-us-10? I purchased 4 of them to set up a completely off grid 24000 watt 240v system. What do I need to purchase (or find used) to make my system communicate with the web/ sunny portal?


  24. Mick Drake
    Mick Drake says:

    Hi I have a Sunny Webbox and SB 4000 TL-20 Installed in 2011. Two days ago my webbox stopped communicating with a red light (second from the left as you look at it). Nothing has changed on my system any idea what this could be, is there a solution. I have tried all the usual power disconnect, restarted Router. If not is there an alternative for system monitoring for a system from 2011. I can still connect directly with the inverter using Sunny Explorer.

  25. Mick Drake
    Mick Drake says:

    Hi My Sunnyportal is no longer updating from my Webbox. It has been like this for almost a week. The communication is still working as I have messages saying last message received “just now” and if I switch it off I get the email telling me that there has been no communication. The second light from the left is “RED” Sunny explorer works fine directly to the inverter.

    • Christiane Keim
      Christiane Keim says:

      Hello Aljaz,

      Hope that we got your question right:
      Each inverter can be equipped with one RS485 data module.
      So, if you have for example 2 inverters, you will need 2 RS485 data modules for each unit.

      Sunny regards


Leave a Reply

Want to join the discussion?
Feel free to contribute!

Leave a Reply

Your email address will not be published.

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>