Fronius Inverter Wi-Fi Reconnect Guide

Fronius Primo/Symo Series

1. Prepare your setup

Confirm your home Wi-Fi is working — test it by connecting with your phone or tablet.
Keep a laptop or tablet nearby; the setup is easier on a larger screen.
Changed internet provider, modem/router, Wi-Fi name (SSID) or password? You’ll need to reconnect the inverter with the updated details.

2. Activate the inverter’s WiFi access point

On the inverter display, press the Back or Menu button to open the Setup menu.
Navigate to Setup → Wi-Fi Access Point → Activate / Enable.
The inverter starts broadcasting a network named FRONIUS_240.XXXXXX.

Tip: the default password is usually 12345678, unless your inverter label lists a different one or your installer set a unique password.

3. Connect your device to the inverter’s hotspot

Open the Wi-Fi settings on your phone, tablet or laptop and select the network beginning with FRONIUS_240.
Enter 12345678 (or the custom password provided for your inverter).

4. Access the inverter’s web interface

Once connected to the hotspot, open a browser such as Chrome.
In the address bar, type 192.168.250.181 and press Enter.
When the Fronius web interface loads, log in using the Customer account (or Installer if required).

Don’t know your password? Your installer can provide it — if we installed your system, give our team a call.

5. Configure your home WiFi network in the inverter

Go to Settings → Network (or Communication → Network, depending on your model).
At the bottom of the Network Settings menu, select your home Wi-Fi network.
Click Set.
Enter your Wi-Fi password, then click Save or Apply.
When prompted, confirm the new settings (look for the tick icon).

6. Verify the connection

On the inverter display, go to Setup → Network → Status.
Check that a valid IP address is shown — 0.0.0.0 means it isn’t connected yet.
Log in to Fronius Solar.web and check that live data is updating.

7. Troubleshooting tips

Weak Wi-Fi near the inverter? Move the router closer or add a Wi-Fi extender.
Enter the Wi-Fi password exactly — capitals and special characters count.
Still won’t connect? Start again from Step 2.
Ongoing issues may need a firmware update or a hand from your installer or Fronius Support.

Fronius GEN24 and GEN24 Plus Series

1. Check your WiFi signal

Stand near your inverter and check on your phone whether your home Wi-Fi network appears in the list.
If it doesn’t appear, the signal is too weak — move the router closer or install a Wi-Fi extender.
The inverter can only connect if it can detect your home Wi-Fi from where it’s mounted.

2. Try a power cycle first

If you haven’t changed internet providers, try restarting the inverter before touching the Wi-Fi settings.

Turn the AC supply OFF at the main switch or inverter circuit breaker.
Turn the DC supply OFF using the isolator beside the inverter.
Wait until the inverter fully shuts down, then turn the DC back ON, followed by the AC.
Once it restarts, look for a solid blue Wi-Fi light — that means it has reconnected.

If the blue light doesn’t appear, continue with the manual reconnect steps below.

3. Activate the inverter’s WiFi access point

Press and hold the middle button on the inverter until the Wi-Fi indicator above the icon starts flashing.
This switches on the inverter’s built-in Wi-Fi hotspot.

4. Connect your phone or tablet to the inverter's hotspot

Open your device’s Wi-Fi settings and look for a network starting with FRONIUS_240.XXXXXX, then select it.
Enter the default password 12345678.
Wait until your device shows a tick or ‘connected’ before continuing.

5. Access the inverter’s web interface

Open a browser such as Chrome or Safari.
Type 192.168.250.181 into the address bar and press Enter.
The inverter’s local interface will appear, showing the system bubbles and live data.

6. Log in to communication settings

Tap the menu icon (the three horizontal lines) in the top-right corner.
Select Communication.
Choose Customer as the login role.
Enter your customer password — your installer will have provided this after installation.

7. Configure your home WiFi network

Open the menu again and select Network.
Keep your phone connected to the Fronius Wi-Fi hotspot.
In the middle section of the page, tap Wi-Fi — your available home networks will appear.
Select your home Wi-Fi, enter the password and save the settings.
Once connected, the inverter will switch across to your home Wi-Fi automatically.

8. Confirm connection

Wait a few moments and check the inverter’s Wi-Fi indicator:

Solid blue light = connected to Wi-Fi
Flashing light = still trying to connect

You can also confirm it by checking your live data on Fronius Solar.web.

9. Troubleshooting tips

If no Wi-Fi networks appear, use a Wi-Fi extender or consider a hard-wired Ethernet connection.
Double-check the Wi-Fi password — it is case-sensitive.
Still stuck? Restart the unit and repeat from Step 3.
For ongoing issues, contact your installer or Fronius Support.

What is a Fronius inverter — and how do I reconnect it to Wi-Fi?

What is a Fronius inverter — and why does it need Wi-Fi?

A Fronius inverter is the Austrian-made unit on your wall that converts the DC power from your solar panels into the 240V AC power your home uses. It also measures what your system produces and sends that data to the Fronius Solar.web app, so you can see your solar working in real time.

The inverter needs your home Wi-Fi to keep that monitoring live. If your app has stopped updating, nine times out of ten it isn’t a fault at all — it’s simply lost Wi-Fi after a new modem, a changed network name (SSID) or a new password. The step-by-step guides below walk you through reconnecting it yourself, for both the older Fronius Primo / Symo range and the newer Fronius GEN24 and GEN24 Plus range.

Quick answer: switch on the inverter’s own Wi-Fi hotspot (FRONIUS_240.XXXXXX), connect your phone to it, open 192.168.250.181 in a browser, then choose your home Wi-Fi network and enter the password. A solid blue Wi-Fi light or a valid IP address means you’re back online.

We’ve been installing and servicing Fronius inverters across Geelong, the Surf Coast and the Bellarine since 2011, with more than 1600 systems installed by our own in-house crews — no subcontractors. If you get stuck, a local team member can talk you through it on (03) 5243 8364.

Checking Fronius inverter Wi-Fi connection on a phone

Fronius Inverter Questions We Hear Most in Geelong

Is a Fronius inverter a good choice?

Fronius has been making inverters in Austria for decades and the Primo, Symo and GEN24 ranges are well proven on Australian roofs. They’re straightforward to monitor through Solar.web and well supported locally, which is why we’ve fitted plenty of them across Geelong, the Surf Coast and the Bellarine.

Why has my Fronius inverter stopped reporting to the app?

Almost always a Wi-Fi issue rather than a fault — a new modem, a changed network name or password, or a weak signal where the inverter is mounted. Follow the reconnect steps above for your model. The panels usually keep producing normally the whole time; it’s only the monitoring that drops out.

Can I add a battery to an existing Fronius system?

Yes — in most cases a battery can be added alongside your existing Fronius solar without replacing the panels. We regularly retrofit batteries such as SigenStor, Tesla Powerwall and BYD to homes that already have solar, and our own in-house crews handle the whole install.

Who can help if I can’t get it reconnected?

Give our local team a call on (03) 5243 8364. We’ve been installing since 2011 with 1600+ systems completed by our own crews, so there’s a good chance we’ve seen your exact setup before.

Velocity Solar installation team in Geelong

“We have used Velocity Solar twice in the last 2 years. Firstly, to install our 17kw solar system and Fronius inverters in August 2023, and then more recently to install a Sigenstor 40kWh Battery and EV AC charging port in October 2025. In all our interactions they have been super professional as they educated us on our options and the implications of our choices, they then turned up on time and we”

— Manifold, Manifold Heights (5★ Google review)

Still not talking to your Wi-Fi? Talk to a local Fronius-savvy team

Velocity Solar is Geelong-based and owner-run, installing solar and batteries across Geelong, the Surf Coast and the Bellarine since 2011 — 1600+ systems, all completed by our own in-house crews.

Call (03) 5243 8364

Wendy Dawson

21 November 2025

Very knowledgeable, professional team, tidy and friendly. Did a great job and explained the system well. Many thanks, Wendy

Gwyneth Graham

17 November 2025

I cannot speak highly enough of the great customer service I experienced from Velocity Solar. They helped me choose the right solar battery for my needs, provided lots of communication and explained the installation really well. They corrected errors that the people who installed my solar panels had made. Everything went very smoothly

Carey Wheeler

14 November 2025

The team from Velocity were fantastic to work with. During the consultation they totally changed our perspective of what we were trying to achieve long term with our battery and solar set up and were wrapped with how well it all works. The support with any queries that we’ve had since install has been exceptional too.

michael

8 November 2025

Three phase solar system just installed. Staff (Admin and installers) at Velocity solar were very prompt, efficient and knowledgeable. Being a registered building inspector I was amazed to see the electrician (John) use a spirit level to install the solar inverter and mounting board on the shed. Very happy I used Brad Ott and the team at Velocity Solar. I now have my new 3 phase, 40 kWh battery and extra solar panels added. I thourouhly recomment Brad and his team at Velocity Solar who are simply the most knowledgeable and professional company to have Solar and Battery storage installed, Goodby to paying electricity bills for me.

Teresa Bossio

21 October 2025

I have had several interactions with Luke from Velocity Solar and all have been extremely positive. From our very first conversation where I had numerous questions about the proposed solar system Luke demonstrated that he was very experienced in the field and took the time to explain everything to us in detail without being pushy . Subsequent conversations enabled us to make a very well informed choice about the system we purchased at a competitive price. I like the fact that you can call Luke at any time should you have questions/concerns and the back up service offered by Velocity Solar is second to none .

Gavan

11 October 2025

The battery installation went smoothly and those I spoke with over the process were professional and knowledgeable. There was some delay waiting for the install due to import issues with Trumps tariff sage but communications outlining issues were helpful in understanding timelines. Logan and Brady were great and the wiring and final set up is neat and well contained.

Toddlez

9 October 2025

I had a brilliant experience with Velocity Solar from start to finish. The quoting process was very detailed and explained in layperson terms for people like me who think electricity is magic. The crew that completed the works kept us updated as they were working, and were always polite and very informative. After the works they took time to run us through the various bits and bobs they had added to our solar network. Would 100% recommend!

Fred Page

22 September 2025

A great company for providing the install of our battery and additional solar panels. Huge thank you to Luke, Brad, Elly and team for the support through out the process. Couldn’t recommend the team more highly!

Chris Huggins

21 September 2025

We have just had Sigen battery and REC panels installed. We chose Velocity Solar because we had PV installed by them 11 years ago and knew they were not a fly by night operator. Luke took care of the design work and it has turned out really well. The economics were right to replace the old panels and the new REC panels look great. Velocity Solar handled all the rebate applications particularly well. The 32 kwh Sigen battery has capacity for all our needs and was a great price with the rebates. Logan, Bailey, Bodan, Tommy and the rest of the crew were a pleasure to have around the place, the finished job is very tidy and all completed in 3 days. Very happy with the result.