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Solar Inverter Wi-Fi Reconnection Guide

When your home Wi-Fi network changes or your router is replaced, your solar inverter can lose its internet connection, which stops your energy generation from updating in the monitoring app.

Follow the step-by-step instructions below for your specific hardware.

Fox ESS

Prerequisite: Ensure your home router is broadcasting a 2.4 GHz network, as Fox ESS dataloggers require this to connect.

Open the FoxESSCloud (or FoxCloud) app on your smartphone and tap "Me" in the bottom right corner.
Select "WLAN Configuration" or "Connect to Wi-Fi".
The app will search for nearby Fox hardware. If your inverter does not appear automatically, tap the option to scan the QR code, which is located on your inverter's Wi-Fi dongle.
You now need to connect to the dongle's local network. From your phone's Wi-Fi settings, look for an available network SSID that starts with "W" and ends with the last 7 digits of your Wi-Fi dongle's serial number.
Return to the Fox app. In the available networks list, select your home broadband router's network name (SSID).
Carefully enter your home Wi-Fi password and submit. You will receive a confirmation screen once the inverter successfully pairs with the network.

Reconnect Fox ESS WiFi Datalogger Guide

This video visually guides you through the Fox ESS app settings and the exact steps to pair your data logger with a new Wi-Fi network.

Duracell Energy

Reconnecting a Duracell Energy (Dura-i) system requires connecting directly to the inverter via Bluetooth.

Note for multi-inverter setups: If your inverters are running in parallel, you must turn off parallel mode via the toggle switch in the app before starting, and turn it back on once all units are successfully reconnected to the internet.

Connect your smartphone to your home's 2.4 GHz Wi-Fi network and ensure you are standing within 2 meters of the inverter with your phone's Bluetooth enabled.
Open the Dura-i app and tap the "Local Access" button on the login screen.
Select your inverter from the drop-down list (the serial number will begin with a "BLE" prefix).
When prompted, select "End User". (If asked for a Bluetooth password that you don't know, quickly tap the Bluetooth symbol 3 times to reset it).
Once connected to the inverter dashboard, tap "Settings" at the bottom right.
Scroll down to "WLAN" and enter your home Wi-Fi SSID and password.
Press "Ok". You will see a countdown—wait until you see two green ticks, which confirms the system is successfully connected to your Wi-Fi.

Tesla

Depending on how your system was installed, you will reconnect your system via your Powerwall, Tesla Solar Inverter, or Gateway.

Stand close to your Tesla Gateway or Powerwall and ensure your phone's Wi-Fi is turned on.
Open the Tesla app, locate your home energy site, and select "Settings".
Scroll to the bottom of the screen and tap "Configure Wi-Fi".
Follow the in-app prompts. The app will ask your phone to join the hardware's local network, which is typically named "TEG-xxx". Accept this request.
Once connected to the internal Wi-Fi, return to the Tesla app. Select your preferred home Wi-Fi network from the list of available networks.
Enter your home network password and tap "Connect".
It may take up to five minutes for the system to sync and confirm the connection to the internet.

Growatt

Growatt systems use a ShineWiFi datalogger (such as ShineWiFi-X or ShineWiFi-S) attached to the bottom of the inverter.

Prerequisite: Connect your phone to your home's 2.4 GHz Wi-Fi network before starting. Ensure Bluetooth and Location Services are enabled on your phone.

Locate the red key button on the bottom of the ShineWiFi dongle plugged into your inverter.
Press and hold the button for 6 seconds until the LED light flashes rapidly (blue or green depending on your model). This puts the dongle into AP pairing mode.
Open the ShinePhone app on your mobile device and log in.
Go to "Plant", tap the "+" icon in the top right corner, and select "Datalogger List" (or select your existing logger and tap "Configure Wi-Fi").
Tap "Add Datalogger" and scan the QR code on the side of the ShineWiFi stick, or manually type in its Serial Number (S/N) and Checkcode.
Select your 2.4 GHz home Wi-Fi network name from the drop-down list.
Enter your home Wi-Fi password carefully and tap "Next" or "Advanced Configuration".
Wait for the configuration progress to complete. Once finished, the LED indicator on the dongle will turn solid green, indicating a successful connection to the Growatt server.

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