Particularly useful in helping to fix my GivEnergy All in One system with a disabling fault.
Patrick Collins · Sep 2026 Google
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. Most often only the monitoring link is broken, and the system usually keeps running, so check the inverter's own screen. This guide walks you through the reconnection process.
from £195 on-site WiFi setup · extender £75 extra if needed
- 2.4GHz WiFi required — 5GHz not supported
- Uses SolisCloud app
- Inverter usually still running offline
Stuck on the WiFi setup?
Datalogger LED flashing, the SolisCloud app not finding the logger, or still no data after setup? If the steps below don't fix it, we can set it up on site, from £195.
Book on-site WiFi setupBack to Solis hubIndependent — not affiliated with Ginlong Technologies.
Ron is a super star. Two months ago my GivEnergy battery failed a firmware upgrade leaving it a brick. My installer couldn't/wouldn't fix it. GivEnergy couldn't/wouldn't fix it. Then they went into administration and all hope was lost. A flurry of emails later and Ron had diagnosed the fault (failed USB flash drive, something I'd suspected) and talked me through resolving it. Two months of nothing resolved in about 3 hours. It's great to work with someone who pays attention to the details, knows that they're doing (not just following a script) and gets stuff sorted without a fuss or up-charging.
Christopher · Apr 2026 Trustpilot
Excellent response to diagnose a problem on our SolarEdge installation. Kept us informed at every step. Diagnosis quickly completed and solution implemented.
Les Bennett · May 2026 Trustpilot
I have a GivEnergy system consisting of two batteries, two inverters and a controlling EMS (Energy Management System) which has not worked since Nov 2025. After six months I discovered Solar Tech Support, reached out to them and Ron phoned me back – how often do you get that service? Could not be more helpful – worked directly with me over the phone, outside what I would call normal working hours. Lucid explanations and we were able to discuss the issues and history using camera and email history. As this was a very rare setup, Ron was able to access an EMS expert in the field to confirm the solution. One sunny day in, I am now only paying for standing charge and a few pence for spikes in grid consumption while battery catches up with house demand.
Ian · May 2026 Trustpilot
When my GivEnergy system had an issue, I was completely left without support and had honestly lost all hope. Thankfully, I searched online and found Ron, which completely turned things around. After sending him a message, he responded incredibly fast and called me to assure me that he would get the problem fixed. I really admire his dedicated, supportive nature and his determination to find a solution. With this kind of outstanding attitude and customer service, he has absolutely secured a future customer in me.
Sree · May 2026 Trustpilot
Following an email enquiry i was able use Whatapp Chat to work with their online support agent who successfully solved my battery problem. Having been told that it had gone into sleep mode and would require a site visit Solar Tech successfully sorted the problem remotely. No hassle and no success no fee. Recommended Givenergy system support team.
Steve Spencer · Sep 2026 Google
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. If it can't, the logger probably won't hold a connection either: we can set it up on site, from £195, with a WiFi extender an extra £75 if the signal doesn't reach.
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, we can set it up on site, from £195, and check on the visit whether the logger hardware has failed and needs 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 system usually keeps running, so check the inverter's own screen. What you do 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 on site whether a replacement is needed, as part of our WiFi setup visit, from £195. Replacement loggers are available directly from Solis distributors in the UK.
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 SolisCloud app. While the logger is disconnected, normally only the monitoring data stream is interrupted: the system usually keeps running, so check the inverter's own screen.
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 SolisCloud app. If your logger has no reset button, remove it from the inverter port, wait 30 seconds, and reinsert it.
We don't set up or diagnose WiFi remotely or over the phone: it's quicker and more reliable done on site. The steps above are free to follow yourself, with your phone near the inverter so it can join the logger's broadcast network. If it still won't connect, we set it up on site, from £195: we connect it to your WiFi, set up your router, including a separate 2.4 GHz network if it needs one, and check it's reporting. If the signal doesn't reach, a WiFi extender is an extra £75, and we carry them with us.
Book
Solis WiFi setup not working?
Datalogger LED still flashing, the SolisCloud app not finding the logger, or SolisCloud still showing no data? If the logger needs reconnecting to your WiFi, we can set it up on site, from £195, and on the visit we also check whether the logger itself needs replacing.
- On-site WiFi setup, from £195
- Router set-up on site, including a separate 2.4 GHz network
- Logger hardware failure diagnosis included
- Replacement logger advice if needed
Service notice
We’re busier than ever. Thank you for your patience.
Due to unprecedented demand we’re currently only carrying out on-site work in Yorkshire, and replies are taking up to 7 days. Remote diagnostics continue for the whole UK as normal.
Every message is read and answered, so please don’t send it twice; that only slows the queue.
Ronald Director, Solar Tech Support
On-site: Yorkshire only, for now
Remote: UK-wide, as usual
Remote fix: £125 if we fix it, no charge if we don’t
Replies: within 7 days
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