Sungrow Inverter Wifi Reconnect Guide.

Is your Sungrow inverter no longer producing data? Let’s get that back for you with the PSW Energy Sungrow 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 Sungrow iSolarCloud.

Sungrow iSolarCloud Solar Monitoring

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 Sungrow 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 Sungrow 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 Sungrow iSolarCloud cloud server which allows you the view your solar production information.

Sungrow inverter WiFi reconnect guide.

The following Sungrow inverter WiFi reconnect guide is applicable for all Sungrow WiFi enabled inverters which include the Sungrow SG#K-D, Sungrow SG#KTL-M and SG#K-20 Hybrid models.

For ease of reference the Sungrow buttons will be referred to as 1, 2, 3, 4 from left to right.

Step 1.

Firstly, go to your WiFi-enabled device and open up the Settings. Open your WIFI SETTINGS  and click on your inverter WiFi network “SG-******”. Once your device has successfully connected to the inverter network, open the Sungrow iSolarCloud APP. 

Login to your iSolarCloud account. Your USERNAME  is your email address and your password is “psw1111″. Once you’re logged in, click the MORE  tab in the bottom-left hand corner of the page, and click on the WLAN CONFIGURATION tab. Information will pop up notifying you’ve successfully connected to the inverter, click NEXT

Step 2.

The next step is to connect your inverter to your home WLAN network, select your WIFI NETWORK from the list and enter your password. The symbol “” indicates a successful connection, click NEXT. Information indicating a successful connection to the home network will pop up. Your inverter is reconnected.

Be good to yourself.

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16 replies on “Sungrow Inverter Wifi Reconnect Guide.

  • Colleen

    My app won’t even log in, just says “loading failed please check network”. There is nothing wrong with the network, everything else is working.

  • Flora

    I tried all of these, and it still says, ‘this S/N has been occupied. Please check the S/N’. What is this S/N?
    I deleted the app and reinstalled it, also tried installing it on another device, but none of these works.

  • Kellie

    I’m getting the same error message when trying to set up a new system. I understand S/N means serial number but how do I fix the problem?

  • Brett M Moore

    I connect to the inverters wifi and on the app I have login, then on the bottom I have visitor login and local Access. This is a new install and the installers have no idea. I cannot register an account because it wants abn business name then it wants top level distributor or installer number. So I look at local access WLAN and it has a user name and password. I tried the password on the unit to no avail. The app says use the serial number.. so that too no avail. I cannot log in at all and.. to top it off. the WIFI is worse than the smart meter. How do I even connect to this let alone dampen down the wifi signal ?

    • Brett M Moore

      Also, where it says user, it’s just user. There are no instructions for anything else to put in that box other than the user. Also, the unit on off-grid is stuck in a reboot cycle. It just crashes, reboots, crashes, reboots crashes reboots. The things it has screwed up in my home is adding up.

  • Zorb Gon

    I have the same S/N error. My installer set up the account and put the “plant” in it and an email came to me with a temp password. I did not see this. I did download the app and set up an account and chose a password of my own. I tried to put the “plant” in it but got an error message. So….now I have an account in the same user name as the one my installer (good man) set up which opens with my password not his and has no “plant in it”. Does anyone have a similar sequence? I will work out the solution and share it.

  • Mars

    I had the same issue of connected to Sungrow inverter’s WIFI but cannot log in to device/locally. To help other people who might visit this page for info, I’ll share my solution: turn on your mobile’s Location!
    If location is off, the iSolarCloud app won’t allow you to log in.


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