Yes — most faults are diagnosed and resolved remotely. We start with monitoring data, settings review and evidence-led troubleshooting. If an on-site visit is required, we confirm exactly what needs checking so there's no wasted callout.
Solar Tech Support
Engineer-led solar diagnosticsYour solar system should be diagnosed by an engineer.
Ours are.
Diagnosed by experts. Powered by data.
Solar Tech Support is the UK's most active independent solar diagnostics service — built and run by an electronic engineer, with a fault database that grows weekly across every major brand.
We don't just check solar — we diagnose it.
- Engineer-led · Multi-brand · UK-wide
- Independent of installers and manufacturers
- Remote-first · No callout fees
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.
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.
Ron want out of is way to help, nothing was to much. He was very thorough in what he did Very knowledgeable I would highly recommend Ron and his company He did a fantastic job for me. if you have any problems, he'll do his best to help you out and resolve your problem. I wouldn't hesitate to recommend them
Ron took me through a diagnostic to confirm my GivEnergy Inverter had a fault. A common one as it turns out with the AC Inverter. As GivEnergy is defunct there is no immediate fix, aside from sourcing 2nd hand replacement. It may be that a fix becomes available over the summer which would make a lot of GivEnergy customers happy (Again)
Contacted Ron with a problem and he sorted it out quickly with no problems at all. Very knowledgeable on anything solar/ batteries. I would recommend him to anyone
I've spoken to Ron a couple of times with issues with my Givenergy installation. Such a friendly knowledge guy very highly recommended. Thank you very much for resolving my issues
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.
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.
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.
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.
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 (their Trustpilot reviews don't lie!). 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.
This company are a rare gem, I had a very unusual problem following a failed firmware upgrade on my GivEnergy kit. I then found out GivEnergy were in administration and had dismissed all their support staff! None of the usual fixes to try and restore my inverter comms would work, and I looked everywhere, forums, GivEnergy youtube support videos - even AI couldn't figure it out. My installer was talking about huge sums for system replacements, and being vague / evasive about if they'd even install replacement GivEnergy inverter. Enter Solar Tech Support, reassuring and knowledgeable from the very start, I've learnt loads about my solar system though the friendly chat while my engineer worked as he diagnosed the problem and figured out a fix procedure that I've not found anywhere else - amazing . If you need solar system repairs - especially if you like me have been left high and dry by GivEnergy, I cannot recommend this company enough. Give them a call.
I sent a message on their website regarding a problem I have on my Givenergy system. Although not supplied by Ronald, I thought it was worth an email. Within the hour on a Saturday, he phoned and we discussed the problem. He logged in remotely and gave excellent advice. I'm too far away for his on-site help but he did diagnose the problem and was happy also to chat through my thoughts about an upcoming solar/battery install I'm planning. Great bloke.... if only he was nearer!
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.
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.
Ron want out of is way to help, nothing was to much. He was very thorough in what he did Very knowledgeable I would highly recommend Ron and his company He did a fantastic job for me. if you have any problems, he'll do his best to help you out and resolve your problem. I wouldn't hesitate to recommend them
Ron took me through a diagnostic to confirm my GivEnergy Inverter had a fault. A common one as it turns out with the AC Inverter. As GivEnergy is defunct there is no immediate fix, aside from sourcing 2nd hand replacement. It may be that a fix becomes available over the summer which would make a lot of GivEnergy customers happy (Again)
Contacted Ron with a problem and he sorted it out quickly with no problems at all. Very knowledgeable on anything solar/ batteries. I would recommend him to anyone
I've spoken to Ron a couple of times with issues with my Givenergy installation. Such a friendly knowledge guy very highly recommended. Thank you very much for resolving my issues
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.
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.
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.
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.
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 (their Trustpilot reviews don't lie!). 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.
This company are a rare gem, I had a very unusual problem following a failed firmware upgrade on my GivEnergy kit. I then found out GivEnergy were in administration and had dismissed all their support staff! None of the usual fixes to try and restore my inverter comms would work, and I looked everywhere, forums, GivEnergy youtube support videos - even AI couldn't figure it out. My installer was talking about huge sums for system replacements, and being vague / evasive about if they'd even install replacement GivEnergy inverter. Enter Solar Tech Support, reassuring and knowledgeable from the very start, I've learnt loads about my solar system though the friendly chat while my engineer worked as he diagnosed the problem and figured out a fix procedure that I've not found anywhere else - amazing . If you need solar system repairs - especially if you like me have been left high and dry by GivEnergy, I cannot recommend this company enough. Give them a call.
I sent a message on their website regarding a problem I have on my Givenergy system. Although not supplied by Ronald, I thought it was worth an email. Within the hour on a Saturday, he phoned and we discussed the problem. He logged in remotely and gave excellent advice. I'm too far away for his on-site help but he did diagnose the problem and was happy also to chat through my thoughts about an upcoming solar/battery install I'm planning. Great bloke.... if only he was nearer!
Brands we support
Not a call centre. Not an electrician. The specialist.
STS was founded by an electronic engineer from the University of York who spent three years as Technical Director at one of the UK's largest renewable energy companies — overseeing around 1,000 solar installations a year at peak. That means every major inverter brand, every battery system, every failure mode — diagnosed from the inside.
Most people who call a solar problem number reach a call centre that logs a ticket and dispatches an electrician. STS is different: you get engineer-level diagnosis from someone who has seen your exact fault hundreds of times.
Start remote. Fix fast.
We diagnose the real issue first, then do the minimum required work to restore safe generation. Remote-first, on-site only when needed.
Remote Solar Diagnostic
Fault codes, underperformance, battery issues, monitoring outages. We review your evidence and identify the real cause.
System Recovery
Installer gone bust, access locked, ownership transfer, monitoring rebuild. We restore control of your system.
On-Site Technical Visit
Hardware faults, CT rewires, EPS circuit checks, independent inspections. Targeted visits, no guesswork.
Solar Health Check
Full system performance audit. Catch underperformance before it costs you — ideal after purchase or installer change.
Book health checkIndependent Inspection
MCS compliance checks, post-install snag inspections, warranty claim support. Unbiased, documented, defensible.
Book inspectionSolar Health Plan
Annual cover for diagnostics, priority support and performance monitoring. Peace of mind, year-round.
See health plansRecognise your fault?
Every fault below has a repeatable diagnostic path. Click your symptom to go straight to the right page.
Hard stops, no output, complete shutdown, fault state.
Charge windows, CT errors, BMS faults, firmware issues.
App not updating, portal dark, logger disconnected.
Inverter tripping high voltage, evidence packs, DNO.
Inverted readings, backwards battery behaviour, wrong data.
Wrong cap, meter conflicts, DNO compliance failures.
Access locked, no warranty support, orphaned system.
Generation lower than expected — shading, config, hardware.
Look up your inverter error code by brand — SolarEdge, Huawei, GivEnergy, Growatt and more.
Get more from what you already have.
Add battery storage, install EPS backup power, expand an existing battery stack, replace a failing inverter, or protect your panels from birds. Every upgrade is scoped, priced and handled by STS.
No battery yet? Add a GivEnergy or Sunsynk hybrid inverter and battery to your existing solar array.
See battery upgrade guide →Already have a hybrid inverter? Add a second or third battery to store more solar and import cheaper overnight energy.
See storage expansion guide →Power critical circuits during a grid outage. GivEnergy and Sunsynk EPS installation — from configuration to dedicated backup circuit.
See EPS installation guide →Aging, faulty or end-of-life inverter? Replace like-for-like or upgrade to a hybrid model. All brands, UK-wide.
See inverter replacement guide →Just bought a house with solar?
Don't know what you have, who installed it, or if it's even working correctly? We identify the system, transfer your monitoring access, and get you fully in control.
Start here →Your installer has gone bust?
No response, company dissolved, or left with a locked system? We recover monitoring access, rebuild documentation, and support warranty claims — without depending on the original installer.
Get recovery support →Managing a commercial PV system?
Independent operations and maintenance for commercial solar — no manufacturer ties, no installer partnerships. Annual O&M contracts, emergency fault response, system takeover, and one-off performance audits. All brands, UK-wide.
Annual inspection, real-time monitoring, priority engineer response, and performance reporting.
Same-day remote triage, next-business-day on-site. Inverter failure, generation loss, safety alarms.
Transition from a previous provider. Baseline audit, documentation recovery, structured handover.
One-off performance assessment. Due diligence, insurance, disputes, pre-warranty expiry. No contract required.
Deep brand expertise
Each brand page covers brand-specific fault codes, configuration guides, common problems and repair services.
Yorkshire-based. UK-wide remote.
Remote diagnostics available nationwide from day one. On-site visits cover Yorkshire and surrounding regions. We're expanding — check your area.
Transparent pricing.
No call-out surprises. Remote-first means lower cost. We tell you what's needed before you commit to a visit.
Evidence review + structured diagnosis + written action plan.
Full system performance audit. Catch issues before they become faults — ideal after purchase or installer change.
Targeted physical checks. CT rewires, isolation faults, EPS, hardware.
Remote-first: if the fastest, safest route is remote, we take it. On-site only confirmed necessary before booking.
Solar knowledge base
Practical guides written by engineers — not marketing copy.
What to check before, during and after installation — fully referenced to MIS 3002:2025, MIS 3012:2025 and BS 7671:2018+A3:2024. Don't make final payment without it.
Read the guide + download PDF →DNO notification vs approval, export limits, Fast Track G99, and what happens when paperwork is missing.
What they do, how direction affects readings, and how to spot a miswire.
BMS, SoC, charge rates, and why your battery behaves the way it does.
SEG registration, eligible suppliers, MCS requirements, and how to get paid for your export.
EPS circuits, island mode, switchover time, and what actually runs during a power cut.
Common questions
We specialise in this. We handle monitoring access transfer, rebuild missing documentation, support MCS certificate queries, and compile warranty evidence packs — so you're no longer dependent on an installer that no longer exists. See installer gone bust support →
Common causes include incorrect charge window settings, CT clamp direction errors, BMS communication faults, firmware mismatches, or export limit conflicts. We diagnose the exact cause and apply the correct fix. See battery not charging support →
No. We never ask homeowners to open covers or perform live electrical work. We focus on evidence, monitoring data, safe external checks, and clear guidance. If physical work is needed, a qualified engineer visits on-site.
This is more common than you'd think. We identify the system, assess performance against design spec, check MCS documentation, and get you proper monitoring access. See inherited system support →
All major UK brands: SolarEdge, Huawei, Sunsynk, GivEnergy, Growatt, Solis, Enphase, Fronius, Fox ESS, Tesla Powerwall, Pylontech, Sofar, SolaX, Hanchu, Lux, Dyness, AlphaESS, Duracell Energy, and Sigenergy. Browse all brand pages →
Ready to get your system working properly?
Tell us what's happening. We'll review your details and come back with a clear diagnosis path and a proposed time to talk.