How to Connect GoodWe Inverter to WIFI

Connecting your GoodWe inverter to WiFi lets you monitor your solar system performance in real time. You can track daily generation, spot faults early and make sure your system is earning its keep.

Most GoodWe inverters ship with a built-in WiFi module. Once connected, data flows to the SEMS Portal where you can check production from your phone or computer. If your inverter is not connecting, this guide walks through every step and the most common fixes.

What You Need Before You Start

• Your GoodWe inverter powered on and running (green or blue indicator light)
• A smartphone, tablet or laptop with WiFi
• Your home WiFi network name (SSID) and password
• The SEMS Portal app installed on your phone (iOS or Android) or access to sems.com.au
• Your inverter serial number (printed on the side label)

Make sure your router is within reasonable range of the inverter. Thick brick walls or metal sheeting (common in sheds and garages) can block the signal. If your inverter is more than 10 to 15 metres from the router, consider a WiFi extender.

Step-by-Step: Connect GoodWe Inverter to WiFi

Step 1: Find the Inverter WiFi Network

Open the WiFi settings on your device and look for a network called Solar-WiFi followed by the last eight characters of your inverter serial number. For example, Solar-WiFi_12345678.

If you cannot see the network, power the inverter off at the DC isolator, wait 30 seconds and switch it back on. The WiFi broadcast starts during the boot sequence.

Step 2: Connect to the Inverter

1. Select the Solar-WiFi* network on your device.
2. Enter the default password: 12345678.
3. Wait for the connection to establish. Your device may warn there is no internet. That is normal.

Make sure no other devices are connected to the same Solar-WiFi network at the same time. Only one device should be on it during setup.

Step 3: Open the Admin Page

1. Open a web browser and go to 10.10.100.253.
2. Log in with username admin and password admin.
3. Click “Start Setup” on the dashboard.

Step 4: Select Your Home WiFi

1. The setup wizard scans for available networks. Select your home WiFi SSID from the list.
2. Enter your home WiFi password.
3. Click “Next” and then “Complete”.

The first indicator light on the inverter should begin blinking rapidly. Within a few minutes it will settle to a steady light, confirming a successful connection.

Step 5: Verify on the SEMS Portal

1. Reconnect your phone or laptop to your normal home WiFi.
2. Open the SEMS Portal app or visit sems.com.au.
3. Log in and confirm your inverter appears online with live generation data.

It can take up to 15 minutes for the first data to appear. If nothing shows after 30 minutes, check the troubleshooting section below.

Setting Up the SEMS Portal App

The SEMS Portal app is GoodWe’s free monitoring platform. It is the easiest way to keep tabs on your system from anywhere.

• Download from the App Store (iOS) or Google Play (Android). Search for SEMS Portal.
• Create an account using your email address.
• Add your plant by entering the inverter serial number.
• The app shows daily, monthly and yearly generation plus real-time power output.

You can also set up push notifications for faults, low production days and firmware updates. This is worth enabling so you catch issues before they cost you money.

Troubleshooting Common WiFi Issues

WiFi dropouts and failed connections are the most common support requests we see at SolaXs. Here are the fixes for each scenario.

Inverter WiFi Network Not Visible

• Power cycle the inverter at the DC isolator. Wait 30 seconds before switching back on.
• Check the WiFi module is properly seated. On some GoodWe models, the module plugs into a slot on the bottom of the unit.
• Move closer to the inverter. The broadcast range is limited, especially through walls.

Cannot Access 10.10.100.253

• Confirm you are connected to the Solar-WiFi network, not your home WiFi.
• Try a different browser. Some mobile browsers redirect to a search instead of loading the IP.
• Clear your browser cache or try an incognito window.

Setup Completes but Inverter Shows Offline

• Double-check the WiFi password. The most common cause is a typo.
• Make sure your router uses 2.4 GHz. Most GoodWe WiFi modules do not support 5 GHz networks.
• Check your router is not blocking new devices (MAC filtering).
• Move the router closer or add a WiFi extender if signal strength is borderline.

Intermittent Disconnections

• Relocate the router or add a repeater if signal is weak at the inverter location.
• Check for firmware updates in the SEMS Portal. GoodWe regularly releases WiFi stability patches.
• Avoid placing the inverter near other electronics that cause interference (microwaves, baby monitors).

When to Call a Professional

If you have worked through every step above and your inverter still will not connect, the WiFi module itself may be faulty. This is not something you should try to replace yourself. Inverters carry high-voltage DC and must only be serviced by a licensed electrician.

SolaXs is a CEC-accredited installer based in Port Macquarie. We service GoodWe inverters across the Mid North Coast and can diagnose WiFi module faults, replace modules under warranty and get your monitoring back online.

Why Monitoring Your Solar System Matters

A solar system without monitoring is like driving without a fuel gauge. You have no idea whether it is performing as expected until the electricity bill arrives.

• Catch faults early. A tripped breaker or shading issue can cut output by 30% or more without triggering any visible error on the inverter.
• Track your savings. See exactly how much you generate and export each day.
• Warranty claims. Production data from the SEMS Portal supports warranty claims if your panels or inverter underperform.
• Optimise usage. Run heavy appliances (pool pumps, hot water, EV chargers) during peak solar hours to maximise self-consumption.

If you are looking at upgrading your system or adding a solar battery to store excess generation, monitoring data helps size the battery correctly. Talk to the team at SolaXs about your options.

Using the SEMS Portal to Monitor Performance

Once your inverter is online, the SEMS Portal becomes your window into how your system is performing day to day. Understanding what the numbers mean helps you get the most from your solar investment.

• Daily generation (kWh). This tells you how much electricity your panels produced. On a sunny Mid North Coast day, a 6.6 kW system should generate around 25 to 30 kWh.
• Real-time power (kW). Shows what your panels are producing right now. Useful for timing heavy appliances like dishwashers and washing machines.
• Lifetime generation. Total energy produced since installation. Handy for checking your system is meeting the output promised in your quote.
• Error codes. The portal flags faults with specific codes. Most can be resolved with a simple reboot, but persistent errors need a technician.

If you have a solar battery, the SEMS Portal also tracks charge and discharge cycles, state of charge and self-consumption percentage. This data helps you understand whether your battery is sized correctly for your usage patterns.

GoodWe WiFi Configuration Video Guide

Download: GoodWe WiFi Setup Instructions (PDF)

Troubleshooting WiFi Connection Issues on the Mid North Coast

Even after following every step correctly, some homeowners on the Mid North Coast still struggle to keep their GoodWe inverter connected. The most common culprit is distance between the inverter and your WiFi router. If your inverter is mounted on an external wall or in a garage, the signal often drops out, especially in older homes with thick brick or fibro walls.

A WiFi range extender placed between the router and inverter solves this in most cases. Position it within line of sight of the inverter if possible. Mesh WiFi systems are another reliable option for homes where the router sits at the opposite end of the house.

• Check that your router broadcasts a 2.4GHz network, as most inverters won’t connect to 5GHz
• Avoid special characters in your WiFi password, as some inverter firmware handles them poorly
• Power cycle both the inverter and router if the connection drops after a power outage or storm
• Update the inverter firmware through the SEMS Portal if connection issues persist after setup
• If your inverter is more than 15 metres from the router, a dedicated range extender is worth the small investment

Monitoring your system’s output through the app isn’t just convenient. It’s how you catch performance drops early before they cost you real money. If you’ve tried everything and the connection still won’t hold, contact SolaXs and we can check whether the issue is hardware-related. We install and service GoodWe inverters across the Mid North Coast and know these units inside out.

Troubleshooting Common WiFi Connection Issues

Even after following the setup steps, WiFi dropouts happen. Most connection problems come down to signal strength, router settings, or firmware.

• Weak signal: If the inverter is more than 10 metres from the router or separated by thick walls, the connection will drop. A WiFi extender or powerline adapter solves this.
• Router on 5GHz only: Most solar inverters only support 2.4GHz networks. Check your router settings and make sure the 2.4GHz band is enabled.
• Firmware out of date: Manufacturers push firmware updates that fix connectivity bugs. Check the GoodWe monitoring app for available updates.
• IP conflict: If another device on your network shares the same IP address, the inverter will lose connection. Setting a static IP for the inverter prevents this.
• Password changed: If you recently changed your WiFi password, the inverter will disconnect. You will need to re-enter the new password through the inverter menu.

If the connection drops repeatedly after trying these fixes, the WiFi module itself may be faulty. Contact SolaXs to arrange a replacement. On the Mid North Coast, we carry spare modules for all major brands and can usually swap them same-day.

For more information, see the Clean Energy Council solar inverter buyers guide and the Australian Government Small-scale Renewable Energy Scheme.