Skip to content
07944 877 329 hello@solar-tech-support.co.uk
Get a quote
Setup guide · Solis

Solis WiFi Datalogger Setup — Reconnect SolisCloud After a Router Change

SolisCloud showing no data after a broadband switch or router change? The WiFi datalogger has lost its connection and needs reconfiguring. Your inverter is still generating — only the monitoring link is broken. This guide walks you through the reconnection process.
Free remote diagnostic · pay only if we fix it — from £75 if remediable remotely
Start setup guide
  • 2.4GHz WiFi required — 5GHz not supported
  • Uses SolisCloud app
  • Inverter keeps generating while offline
Stuck on the WiFi setup?

Datalogger LED flashing, SOLARMAN app not finding the logger, or SolisCloud still dark after setup? We walk you through it in a remote session.

Book Remote Support — from £75Back to Solis hub

Independent — not affiliated with Ginlong Technologies.

5.0
Rated 5.0 on Google Read all 48 reviews

My GivEnergy hybrid inverter + battery system had worked faultlessly for 3 years when it suddenly stopped charging and discharging the battery. On contacting my supplier, who had used a sub-contractor for the installation work, I was provided with an email address at GivEnergy but, as it turned out, this is only for GivEnergy Software who are not able to assist. A Google search led to the Solar Tech Support web site, which contains a wealth of helpful information. I requested a remote solar diagnostic, and after providing Ron access to my inverter, he was able to identify and fix the problem within minutes. I am very impressed by Ron’s expertise and knowledge, which included useful information on the current state of GivEnergy Ltd. I would thoroughly recommend Solar Tech Support.

Simon Riddle · Jun 2026 Google

Contacted Solar Tech Support in desperation. After explaining the issues I had with my system a diagnosis was made and a solution proposed. Fantastic service, even contacted a manufacturer to arrange replacement parts for me. Great communications, explained all they were doing and what I had to do, clearly and precisly. Followed up to confirm all was ok. Excellent service.

Mr Machin · May 2026

I can add to the list of customers who had already 'given up' on GivEnergy due to their appalling customer service, and that was before they went into administration. So you can imagine my desperation when, having changed my ISP and my Inverter, predictably, proving to be the only device that didn't connect automatically to my new network, I found zero prospect of any customer support with GivEnergy having called in the administrators just five days earlier! The salvation came from Solar Tech Support. My IT advisor stumbled across their web site and some very helpful tips for beleaguered GivEnergy customers, as well as an offer to provide direct assistance. Nothing ventured, I decided to drop them an E-Mail, with very low expectations based on my experience of GivEnergy customer support. Within an hour Ron had responded with some pin point advice, and after a few exchanges of E-Mails he had nailed the problem, enabling the combined efforts of my IT advisor and solar installer to resolve it and reconnect my Inverter. Thank you Solar Tech Support, and Ron in particular, for coming to the aid of a deserted and despondent GivEnergy customer. Expert, razor sharp advice and first class customer service, even though I wasn't officially a customer.

customer · Apr 2026

I reached on behalf of a friend, who had lost control of their battery following a storm. A couple giv energy “dealers” had attempted and said different fixes. None worked. Solar tech support solved it remotely on the first attempt almost instantly. Genuinely a 10/10 service.

Will Jay · Jun 2026 Google

When my GivEnergy battery started playing up it became basically useless and several companies I called said they couldn’t help. Solar Tech Support really knew their stuff, communicated very well and resolved the problem quickly. Without them I’d have had to buy a replacement battery.

A D · Jun 2026 Google

Contacted Solar Tech Support when trying to understand what my Givenergy inverter problem might be and what might be my options. Received good/honest advise which backed up my thoughts.

Hugh Speirs · Apr 2026

Before you start: Solis dataloggers only work on 2.4GHz WiFi. If your router only broadcasts 5GHz, or uses a combined network that doesn't allow 2.4GHz fallback, the logger will not connect regardless of how many times you reconfigure it. Check your router settings first.

Setup guide

5-step WiFi datalogger reconnection

This covers the most common scenario: SolisCloud has gone offline after a router change, broadband switch, or WiFi password update. The datalogger needs your new WiFi credentials.

1

Check the datalogger LED status

Find the WiFi datalogger — it is a small module plugged into the bottom or side of your Solis inverter. Check the LED indicator:

LED indicators
PWR (Power): Should be solid when the logger has power from the inverter. If off, the logger has no power — check the connection to the inverter port.
NET (Network): Solid green = connected to your WiFi. Flashing green = trying to connect (needs reconfiguring). After successful WiFi setup, the NET LED changes from flashing to solid within one to two minutes.
COM (Communication): Should be flashing when the logger is communicating with the inverter. If COM and NET are both off but PWR is solid, the logger may have a hardware fault.

If the LED is solid green but SolisCloud shows no data, check your SolisCloud account login and plant configuration before reconfiguring the logger.

2

Confirm your router broadcasts 2.4GHz WiFi

Solis dataloggers only support 2.4GHz. This is the single most common reason WiFi setup fails. Check your router:

• Separate bands: If your router broadcasts separate 2.4GHz and 5GHz networks (different names), use the 2.4GHz network name when configuring the logger.
• Combined band: If your router uses one name for both bands, the logger may connect to 5GHz and fail. Log into your router admin and either split the bands or ensure 2.4GHz is enabled.
• Mesh routers: Systems like Google Nest WiFi, Eero, or BT Whole Home may need band steering disabled. Consult your mesh system documentation.
Quick test: If your phone can connect to the same WiFi from the room where the inverter is, signal strength is likely adequate.
3

Download the SolisCloud app

The SolisCloud app (available on iOS and Android) is used to configure Solis WiFi dataloggers. During setup, your phone connects directly to the logger's own WiFi network, then transfers your home WiFi credentials to it.

• Download the SolisCloud app and log in (or create an account)
• Make sure you are standing near the inverter — you need to be within WiFi range of the datalogger
• Have your 2.4GHz WiFi network name and password ready

The SolisCloud app covers S2-WL-ST, S3-WiFi-ST, S4-WiFi-ST, and S5-WiFi-ST datalogger models. Some older installations may use the SOLARMAN Smart app instead — try that as a fallback if SolisCloud doesn't find your logger.

4

Configure the datalogger with your WiFi credentials

In the SolisCloud app:

1. Go to Service → WiFi Configuration in the SolisCloud app.
2. Enter or scan the logger serial number — the serial is printed on a label on the logger body. You can also scan the QR code.
3. Connect your phone to the logger's WiFi network — it will broadcast a network named something like Solis_xxxxxxxxxxxx (the serial number). This appears in your phone's WiFi settings. Your phone will temporarily disconnect from your home WiFi.
4. Enter your home 2.4GHz WiFi network name and password in the app. Double-check the password — one wrong character will cause the connection to fail.
5. Tap "Start Configuration" and wait approximately one to two minutes. The logger's NET LED should change from flashing green to solid green, confirming a successful connection.

If the logger's WiFi network does not appear, press and hold the reset button on the logger for 10 seconds to put it back into configuration mode. After reset, the LED will flash rapidly, then the logger will broadcast its WiFi network again.

5

Verify the connection in SolisCloud

After the logger restarts, wait 5 to 10 minutes for it to connect and begin uploading data. Then check:

• Datalogger LED: Should now be solid green (connected)
• SolisCloud dashboard: Should show live generation data with a current timestamp
• Historical gap: Data from the period the logger was offline will be missing — this is normal and cannot be recovered
Still offline? Power cycle the inverter: turn off the AC isolator, wait 60 seconds, turn it back on. Check again after 10 minutes. If still not connecting, the logger hardware may have failed and need replacing.

Why Solis monitoring goes offline — and why it matters

Solis inverters use a plug-in WiFi datalogger to send generation and performance data to SolisCloud (formerly the Ginlong Monitoring Portal). The logger stores your WiFi credentials and maintains a persistent connection to your router. When you change your broadband provider, get a new router, or update your WiFi password, the stored credentials no longer match and the logger drops offline. This is the single most common cause of SolisCloud monitoring going dark.

While the logger is offline, the inverter continues generating normally — you do not lose any solar production. What you lose is visibility: you cannot see how much you are generating, whether the system is performing correctly, or if any faults have occurred. For homeowners on the Smart Export Guarantee (SEG), monitoring data can also be useful for tracking export payments and verifying system health over time.

If the reconfiguration steps above do not resolve the issue, the datalogger itself may have failed. Solis dataloggers are replaceable modules — STS can confirm whether a replacement is needed based on the LED behaviour and SolisCloud account status. Replacement loggers are available directly from Solis distributors in the UK.

Related Solis problems
Learn more
FAQ

Solis WiFi setup — common questions

The logger stores your WiFi name and password internally. When you change your router or update the password, the stored credentials no longer match. The logger must be reconfigured with the new WiFi details using the SOLARMAN Smart app. Your inverter continues generating normally while the logger is disconnected — only the monitoring data stream is interrupted.
No. Solis WiFi dataloggers only support 2.4GHz. If your router uses a combined network with the same name for both bands, the logger may fail to connect. Create a separate 2.4GHz network with a distinct name, or check your router settings allow 2.4GHz connections on the combined network. Mesh systems may need band steering disabled.
The logger has three LEDs: PWR, NET, and COM. The NET LED tells you the WiFi status — solid green means connected, flashing green means powered but not connected (needs reconfiguring). PWR should be solid when the logger has power from the inverter. COM flashes when the logger is communicating with the inverter. If PWR is off, check the physical connection to the inverter port — try removing and reinserting the logger.
Press and hold the small reset button on the logger body for 5 to 10 seconds. The LED will flash rapidly then go off, indicating a factory reset. After reset, the logger broadcasts its own WiFi network for reconfiguration via the SOLARMAN Smart app. If your logger has no reset button, remove it from the inverter port, wait 30 seconds, and reinsert it.
We can guide you through the setup process remotely in a supported session, but someone needs to be physically near the inverter to connect a phone to the logger's broadcast network during configuration. If the logger hardware has failed, we diagnose that remotely and advise on replacement. Book a remote session and we'll walk you through it.
Book

Solis WiFi setup not working?

Datalogger LED still flashing, SOLARMAN app not finding the logger, or SolisCloud still showing no data? We diagnose the issue remotely and walk you through the fix — or confirm if the logger needs replacing.

  • Guided remote setup from £75
  • Logger hardware failure diagnosis included
  • Replacement logger advice if needed

By submitting you agree to be contacted about your diagnostic request. We don't share your data with 3rd parties.

Call 07944 877 329 Book free diagnostic