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Sungrow inverter WiFi reconnection assistant

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.


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.

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, there is a high chance your Sungrow inverter disconnected from your WiFi network. Your inverter is now trying to communicate through an IP address 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 system’s lifetime. Here is how to get your Sungrow inverter WiFi reconnected. 

Note: If your inverter has disconnected from your WiFi network, this will not affect your solar energy system’s ability to produce energy. It will only prohibit communication with the Sungrow iSolarCloud server, allowing you to view your solar production information.

Required before initiating the sequence
  • Physical access to your Sungrow inverter.
  • A WiFi-enabled device such as a smartphone or tablet.
  • Patience, the average reconnection time is 10mins.

Step 1: Connect device WiFi

Go to your Settings menu within your smartphone or tablet.

Locate the WIFI SETTINGS  options.

Select the inverter WiFi network named SG-******

Step 2: Login and configure

Once your smartphone or tablet has successfully connected to the inverter WFi network, open the Sungrow iSolarCloud Application.

Login to your iSolarCloud account. 

PSW Customers: Your default username is your email address, and your default password is psw1111

When logged in, select the MORE tab in the bottom left corner of the page.


Information will appear notifying you that you’ve successfully connected to the inverter. Select NEXT.

Step 3: Network setup

The final step is to connect your inverter to your home WLAN (Wireless Local Area 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.

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 Sungrow to the next-level

Complete your Sungrow-infused solar energy system with a solar battery for 360° energy savings and blackout protection.

PSW Energy technical support provides this content for PSW Life Support customers. PSW Energy customers seeking further assistance can access personalised support should the Sungrow inverter WiFi reconnect issues persist.

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