Genius when it comes to solar and off grid installations we spent days trying to work out what was causing our problems and Ron resolved it in less than an hour! Cant reccomend enough
Ben Carroll · Aug 2026 Trustpilot
Brand support · All supported inverter brands
Independent solar support — by inverter brand
We diagnose and fix GivEnergy, SolarEdge, Growatt, Sunsynk, Solis, Enphase, Huawei, Fronius, Fox ESS, Tesla Powerwall, Sigenergy, Pylontech, Sofar, SolaX, Hanchu, Lux, Dyness, Victron Energy and more. Remote-first, evidence-led, and completely independent from your installer and manufacturer.
- All major hybrid & string inverters
- Free remote diagnostic · no fix, no fee
- Not affiliated with any manufacturer
Not sure which brand you have?
If you can't identify your inverter or battery brand, send us a photo of the unit and its display. We'll identify it and point you to the right support resources.
Book a diagnosticHow to identify your inverterWe moved from BT to Vodafone recently. Unfortunately our GivEnergy AIO would no longer appear on the App. Additionally our GivEnergy EV charger stopped working. Vodafone insisted that their dual 2.4ghz and 5ghz compatibility mode would work with the 2.4ghz system. Unfortunately it doesn't. After nearly two weeks of trying to sort this, which also involved searching on various chat forums, I sent an email for help to STS. Within a very short time the same day I got a call from Ash, who is only 45 minutes away from us. He came and quickly got the AIO appearing on the app, so we could once again see the state of the battery. The EV charger presented more of a challenge as the QR code fixed on the side of the charger had worn away. Ash was able to find the necessary information to restore the EV charger to working order. I have a copy of the QR code and other information should we have an issue another time. I had bought a TP-Link TL-WA850RE that just works on 2.4ghz and this is linked permanently to the GivEnergy kit. STS are definitely the people to contact if you find yourself in a similar situation. We are very happy with the service STS provided.
Colin Niblock · Jul 2026 Google
Great service in supplying and fitting an additional GivEnergy battery. Went the extra mile in managing to fit the battery in to a difficult space.
Jules TIlley · Sep 2026 Google
What a fantastic service. Had my fault diagnosed within minutes and actually managed to resolve the issue remotely within a few minutes more. This guy is like a “Solar Batman” helping consumers fix their problems using his extensive industry knowledge and expertise. Outstanding service. Thank you so much.
Andrew Palmer · May 2026 Trustpilot
Outstanding support, very detailed knowledge of the system and clarity on what was needed to fix it, no hesitation in recommending them to all.
Robert Grant · Jul 2026 Google
Excellent service from Solar Tech Support. Extremely quick to respond, easy to deal with and clearly very talented engineers. They were persistent throughout a complex GivEnergy battery issue and resolved everything completely. Highly knowledgeable, professional and reassuring support from start to finish. Highly recommended.
David Harris · May 2026 Trustpilot
STS Solar Tech Support provides specialist diagnostics and repair services across all major solar and battery storage brands available in the UK. Whether your system is a GivEnergy hybrid inverter with Pylontech batteries, a SolarEdge string system with power optimisers, a Growatt SPH with built-in battery support, or any other combination of hardware, we have the knowledge to diagnose faults and guide repairs. We're completely independent from manufacturers and installers, so our diagnostics are impartial and focused on identifying the real cause of the problem.
Each brand has its own quirks, common failure modes, and configuration best practices. A fault code that means one thing on a GivEnergy system might mean something entirely different on a SolarEdge. The same configuration setting that works on one brand might cause problems on another due to subtle differences in firmware logic or communication protocols. We maintain detailed fault databases for every major brand we support, which helps us find the problem when we review your system data.
Whether your system was installed last month or over a decade ago, we can diagnose and repair it. Even if your inverter is no longer manufactured or your battery brand has been discontinued, we often have the spare parts and technical knowledge to get the system working again. Click on your inverter or battery brand below to access brand-specific troubleshooting guides, common faults, and detailed setup documentation. If you're not sure which brand you have, we have a guide to help you identify your system.
Supported Brands
Choose your inverter or battery brand
Hybrid + Battery
Hybrid inverter & battery systems. All generations — Gen 2, Gen 3, AIO. Portal, BMS and firmware faults.
Go to GivEnergy support →
String + Optimisers
HD-Wave inverters with power optimisers. SetApp configuration, monitoring portal, optimiser faults.
Go to SolarEdge support →
Hybrid + String
SPH/MIN/MOD hybrid and string inverters. ShineServer monitoring, Error 04 insulation faults, ARM/DSP issues.
Go to Growatt support →
Hybrid + Battery
Hybrid inverters with battery support. SolarMan portal, grid code faults, EPS backup.
Go to Sunsynk support →
Hybrid + String
S6/RHI hybrid and string inverters. SolisCloud portal, BMS faults, export limit configuration.
Go to Solis support →
Microinverters
Microinverter systems. Enlighten panel-level monitoring, individual panel status codes, IQ series.
Go to Enphase support →
Hybrid + Battery
SUN2000 hybrid inverters with LUNA2000 battery. FusionSolar app, AFCI faults, rapid shutdown, battery comms.
Go to Huawei support →
String + Hybrid
Symo and Primo string inverters, SnapINverter range. Solar.web monitoring, state codes, grid faults.
Go to Fronius support →
Hybrid + AC-coupled
All Fox ESS models: hybrid and AC-coupled inverters, three-phase systems, all-in-ones, and current and older batteries. Fox Cloud, BMS faults, grid alarms and EPS.
Go to Fox ESS support →
Battery Storage
Powerwall 2 and Powerwall 3 battery systems. Tesla app, gateway faults, backup reserve, self-consumption.
Go to Powerwall support →
Hybrid + Battery
SigenStor hybrid inverters and battery modules. SigenCloud portal, CAN faults, EPS, V2G configuration.
Go to Sigenergy support →
Hybrid + Battery
SMILE hybrid inverters with SMILE B battery storage. AlphaCloud portal, BMS faults, EPS configuration.
Go to AlphaESS support →
Hybrid + Battery
Duracell Energy Home hybrid inverter and battery system. App monitoring, BMS faults, backup and EPS configuration.
Go to Duracell Energy support →
Battery Storage
US2000/US3000/US5000 LFP battery systems. PYLON protocol over RS485/CAN, compatible with GivEnergy, Solis, Sofar and more.
Go to Pylontech support →
Hybrid + AC Battery
HYD hybrid inverters and ME3000SP AC-coupled battery systems. SolarMan monitoring, TOU scheduling, BMS communication faults.
Go to Sofar Solar support →
Hybrid + Battery
X1/X3 Hybrid G4 inverters with T-BAT battery storage. SolaX Cloud monitoring, ForceTime charging configuration, BMS faults.
Go to SolaX support →
Hybrid + Battery
HC series hybrid inverters and Blade LFP battery systems. SolarMan monitoring, BMS communication faults, EPS backup.
Go to Hanchu support →
Hybrid + Battery
LXP hybrid inverters and UHome LFP batteries. LuxPower portal, UHome stack configuration, BMS communication faults.
Go to Lux support →
Battery Storage
B4850 and Tower Pro LFP battery systems. Inverter-agnostic with CAN/RS485 compatibility — faults often trace to inverter configuration.
Go to Dyness support →
Off-Grid & Hybrid
MultiPlus-II, SmartSolar MPPT, Cerbo GX, and VRM. Component-based off-grid and ESS systems — VE.Bus errors, BMS disconnect, MPPT faults, and commissioning support.
Go to Victron support →Choosing the right brand page
If you know your inverter brand, click through to its dedicated page above. Each brand page includes brand-specific troubleshooting guides, common fault codes, setup documentation, and known firmware issues. This allows you to focus on the faults and settings that are most relevant to your specific hardware, rather than wading through information for brands you don't have. Fault code indexes sit alongside them, such as the Fox ESS fault code index.
If you don't know your inverter brand, the easiest way to find it is to check the label on the front, side, or bottom of your inverter — the brand name and model number are usually printed clearly. Alternatively, log into your monitoring app (the app or portal you use to check your solar generation). The app homepage or settings page typically shows the inverter brand and model. If you're still unsure, we have a detailed guide to identifying your inverter brand and model that walks through the most common places to look.
If your fault isn't brand-specific — for example, if you're trying to understand why your system isn't generating, or you want general information about battery charging modes — visit the general problems section instead. The problems pages are brand-agnostic starting points that help you diagnose the fault, after which you can come back to your specific brand page for brand-specific configuration steps or fault code interpretation.
Legacy
Legacy & discontinued brands
We also support a range of older and discontinued inverter brands that are no longer manufactured but are still in use across the UK. If your system uses Aurora (Power-One, later ABB then FIMER), Eversolar, Solar River, Trannergy, or similar legacy hardware, we can still help assess and repair the system. Many of these older inverters are exceptionally reliable and often worth maintaining rather than replacing — even a 10-15 year old system can often be restored to full function with the right diagnosis and repair.
The main challenge with legacy systems is parts availability. Replacement inverters for discontinued brands may no longer be in stock at distributors, which means you may need to source components second-hand or consider a full system replacement. During a diagnostic, we'll assess the fault and advise whether repair is practical and cost-effective. In many cases, we can source spare parts or provide interim solutions to keep an older system working. If your brand isn't listed below, contact us directly — we likely still support it or can advise on your options.
Aurora / Power-One
Power-One string inverters (later ABB, then FIMER). We can assess repair viability and source parts if needed.
See Aurora / Power-One →Eversolar
Discontinued Chinese string inverters. Still repairable; parts may need sourcing second-hand.
See Eversolar →Solar River
Early-generation hybrid inverters. Diagnostic available to determine if repair or replacement is cost-effective.
See Solar River →Trannergy
Discontinued hybrid inverters. We maintain technical documentation and can assess repair options.
See Trannergy →If your legacy inverter brand isn't listed above, contact us directly — we likely still support it or can provide guidance on your options. Many older systems are worth maintaining, and we can help you make the right decision.
Not sure which brand you have?
Check the label on the front of your inverter — the brand name and model number are usually printed there. We also have a guide to identifying your system.
Common questions
Yes. We support all major inverter and battery brands including GivEnergy, SolarEdge, Growatt, Sunsynk, Solis, Enphase, Huawei, Fronius, Fox ESS, Tesla Powerwall, and many others. We also support legacy and discontinued brands like Aurora, Eversolar, Solar River, and Trannergy. If your brand isn't listed on this page, contact us — we likely still support it or can advise on your options.
Almost certainly yes. If your brand isn't shown on this page, contact us with your inverter model number and details of the fault. We maintain technical documentation for a much wider range of brands than we've listed here, and our engineers have experience with systems beyond the major mainstream brands. Even if we haven't worked on that specific brand before, our diagnostic methodology and fault-finding approach applies across all solar systems — we can often identify the problem and advise on the best path forward.
All brands develop faults from time to time — there's no brand that's immune to problems. Faults such as battery not charging, a reversed CT clamp, WiFi connectivity and firmware issues appear across all brands. The good news is that most faults, regardless of brand, have identifiable causes and are fixable once properly diagnosed.
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Not sure what’s wrong? Start with a remote diagnostic
Tell us your inverter brand and model, what the system is doing, and we'll diagnose the fault. Most issues are resolved in a single remote session without a site visit.
- All major brands supported
- Same-day availability
- Written report included
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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