Most Solis faults are diagnosed remotely in a single session. Tell us what you're seeing and we'll work it out.
Book your free remote diagnosticSafety: If the inverter is showing a fault, note the code displayed and share it with us when you book.
Saw Ron was advertising a refurbished 9.5 kWh on Facebook, within a couple of days Ron delivered and installed it into my current system, my existing 9.5 batter was also. Gen 2 running on firmware 3022. Literally took him 30 mins, from start to finished, within a couple of days the two batteries had balanced themselves, it’s now been a week with Predbat in control. Working perfectly , could not recommend Ron more highly Top Man!
I work for a Solar Company and had a customer with a GivEnergy system that we are not versed in. Ron took the time to explain the issues my customer was having and between us managed to rectify the issues. 10 Stars ... Thanks again STS
⭐⭐⭐⭐⭐ Absolutely Outstanding Service! My GivEnergy system had completely gone down, and unfortunately I was getting absolutely no support from either the original fitter or the supplier. I was left completely stuck with a system that wasn’t working. I contacted Solar Tech Support and they were absolutely brilliant from start to finish. They quickly got to the bottom of the problem, knew exactly what they were doing, and managed to get my entire system back up and running. Hands down, these guys are absolute experts in their field. The level of knowledge, professionalism and customer service was exceptional, especially when I’d already been left without any support elsewhere. If you have a GivEnergy system and you’re struggling with an issue, don’t hesitate to contact Solar Tech Support. I honestly can’t recommend them highly enough. 5 stars all day long! 🌟🌟🌟🌟🌟
Thank you for your diligence. On this occasion the battery was able to be saved but they have given a route to hopefully arrange a repair from the manufacturer.
Ronald at Solar Tech Support was very quick and knowledgeable in helping me restart my GivEnergy solar electric battery. I would highly recommend his services.
After GivEnergy went into liquidation, just my luck, my battery started playing up (internal board crashed). Contacted my installer - not interested! Found Solar tech support on a Google search. Sooo glad I found this company! Ron is extremely helpful and has plenty of experience. He soon confirmed what the fault was, and helped me to get my system up and running again. Now moved my GivEnergy account to Solar tech support, and will definitely use again if I have more issues. Unusual to find such a helpful company in these times, no morons reading scripts, just direct contact with the engineer.
Every fault below has a proven diagnostic path. Click through for the specific page or book a diagnostic if you're unsure.
Inverter powered but not generating. Check the SolisCloud dashboard for error codes. Common causes: DC isolator tripped, string fault, or grid disconnection fault. Solis inverters give a clear fault description in the monitoring.
See diagnostic guide →The inverter has disconnected from the grid because AC voltage exceeded G98/G99 limits. Common in streets with multiple solar systems. The inverter reconnects automatically, but if trips are frequent, export limiting or DNO notification may be required.
See diagnostic guide →SolisCloud shows generation well below expectations for your location and panel count. Could be partial string failure, soiled panels, or an inverter operating at reduced capacity. We compare expected vs actual output to isolate the fault.
See diagnostic guide →SolisCloud (formerly Ginlong Portal) shows no data. The WiFi datalogger has lost connectivity. Usually caused by router change, password update, or logger hardware failure. While monitoring is dark, the system usually keeps running, so check the inverter's own screen.
See setup guide →Solis dataloggers require 2.4GHz WiFi. After a router upgrade or change, the logger needs reconfiguring. 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.
See setup guide →System generating but not exporting to the grid. Most commonly caused by the export limit setting in the inverter being set to zero, a failed CT clamp, or a G98 export configuration error.
See diagnostic guide →Solis inverters use a CT clamp to measure grid import/export. If installed backwards, the inverter misreads grid flow — leading to incorrect export limiting, wrong energy accounting, and battery dispatch errors on hybrid models.
See diagnostic guide →Solis inverter completely dead — no display, no fans, no response. Could be a failed AC or DC isolator, a wiring fault at the inverter input, or a hardware failure. Safety note: do not open the inverter.
See diagnostic guide →Solis inverters display error codes on the LED panel and in SolisCloud. Common categories: grid fault codes (voltage, frequency), isolation fault codes, DC bus faults, and temperature warnings. Share your exact code when you book — we identify the root cause as part of the remote diagnostic.
We review SolisCloud data, error codes, and settings to identify the exact fault without a site visit.
Installer gone bust, SolisCloud access lost, or monitoring never configured? We recover access and rebuild documentation.
Grid fault investigation, CT clamp correction, DC cable fault location, component inspection.
Download datasheets, installation manuals and warranty documents for Solis hybrid inverters and battery storage systems. Self-hosted and always current.
Solis (made by Ginlong Technologies) produces affordable, reliable string inverters that are well-regarded in the UK residential solar market. The product range includes the S5 and S6 series single-phase inverters and the RHI series hybrid inverters with battery integration. Monitoring is provided by SolisCloud (formerly the Ginlong Monitoring Portal) via a WiFi datalogger. Solis inverters are known for their simple, no-fuss operation — but the monitoring system can be tricky to reconfigure after router changes.
The most common Solis issues we handle: Solis grid voltage fault, SolisCloud offline, Solis not exporting, Solis underperforming, and Solis installer gone bust. Grid voltage faults are disproportionately common with Solis systems in solar-dense streets — this is a grid infrastructure issue, not a fault with the inverter itself. STS provides independent Solis support across the UK — not affiliated with Ginlong Technologies.
STS supports all major inverter and battery brands — not just Solis. If you have a mixed-brand system or are comparing options, visit the brand hub.
Browse all brandsIndependent Solis problems support across the UK — 2 faults STS engineers diagnose and repair. Free remote diagnostic, no fix no fee.
See all problemsFree, independent step-by-step guide to reconnecting a Solis datalogger to SolisCloud. If it still won't connect, we can set it up on site, from £195.
See Solis setup & how-to guidesYour solar system is generating, but not as much as it should. This guide covers shading, panel degradation, inverter efficiency losses, CT clamp issues.
See system underperformingFull index of Solis inverter and battery fault codes — what each F-code means, causes, and where to find them in SolisCloud and the inverter display.
See fault codesDownload Solis datasheets, installation manuals, warranty PDFs, app guides and wiring diagrams. S6 hybrid inverters, RHI series, and compatible batteries.
See documents & downloadsTell us what's happening. We'll review your details and come back with a clear diagnosis path — usually same day.
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.
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