All major UK solar and battery brands: GivEnergy, Sunsynk, SolarEdge, Growatt, Solis, Fox ESS, Huawei, SMA, Fronius, Enphase, and Tesla Powerwall. We also support less common brands including Sofar, Goodwe, Solax, and others on a case-by-case basis. If the system has been installed in the UK, we can almost certainly help. Our engineers work across all brands daily, which means we can often identify cross-brand issues that single-brand specialists miss.
Technical support for solar installers Complex faults resolved, engineer-to-engineer
When a fault goes beyond the manufacturer helpdesk and your own diagnostics, we take over. Remote fault diagnosis, commissioning support, firmware guidance, and manufacturer escalation — delivered by experienced solar engineers, directly to you.
- GivEnergy, Sunsynk, SolarEdge, Growatt, Solis, Fox ESS, Huawei, SMA +
- 24-hour response · same-day for safety-critical faults
- Written diagnostic report with every session
- Confidential — your customer never knows we were involved
Trustpilot Google
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
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
Dennis Brown · May 2026 Trustpilot
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)
Tony Deacon · May 2026 Trustpilot
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
Phill · May 2026 Trustpilot
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
michael fairhurst · May 2026 Trustpilot
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 Trustpilot
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.
Keith Ballard · Apr 2026 Trustpilot
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 Trustpilot
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
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.
customer · Apr 2026 Trustpilot
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.
Andy Thomas · Apr 2026 Trustpilot
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!
Philip · Apr 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
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
Dennis Brown · May 2026 Trustpilot
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)
Tony Deacon · May 2026 Trustpilot
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
Phill · May 2026 Trustpilot
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
michael fairhurst · May 2026 Trustpilot
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 Trustpilot
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.
Keith Ballard · Apr 2026 Trustpilot
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 Trustpilot
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
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.
customer · Apr 2026 Trustpilot
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.
Andy Thomas · Apr 2026 Trustpilot
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!
Philip · Apr 2026 Trustpilot
What's covered
Complex Fault Diagnosis
When you've exhausted your own diagnostics and the manufacturer helpdesk hasn't been useful, we review all available monitoring data, inverter error logs, battery cell data, and system configuration. Root cause identified, written report with evidence and resolution steps.
Commissioning Support
System not behaving as expected after install — battery not charging, CT clamp reading wrong, export limit not applying, EPS not switching, monitoring portal not connecting. We diagnose remotely and talk you through the fix in real time.
Firmware & Configuration Guidance
Firmware updates that change system behaviour, settings that have reverted after a reset, tariff schedule configuration for Octopus Flux or Intelligent Go, charge/discharge window setup, and battery calibration procedures. We know the inverter firmware landscape across all major brands.
Manufacturer Escalation
When the manufacturer's first-line support isn't resolving the issue, we escalate directly to technical teams. We speak their language, provide structured fault evidence they can act on, and follow up until the issue is resolved or a replacement unit is dispatched.
Common scenarios
Battery not charging from solar despite correct wiring — inverter shows no fault code but generation is going to grid instead of battery
Intermittent CAN communication fault across a multi-battery stack that the manufacturer cannot replicate remotely
Customer reporting lower generation than expected — need independent analysis of whether the system is underperforming or expectations are wrong
EPS backup not switching during power cut — system was commissioned with EPS enabled but the changeover failed when tested
Hybrid inverter replacement needed but manufacturer warranty claim has been rejected — need independent report to challenge the decision
How a diagnostic session works
1
You brief us on the fault
Tell us the inverter brand and model, what the customer is experiencing, any fault codes displayed, and what you've already tried. Share monitoring portal access or screenshots if available. The more context you provide, the less time we spend on triage and the faster we identify the root cause.
2
We analyse the system remotely
We review monitoring data, inverter event logs, battery cell voltages, firmware version, configuration settings, and historical performance patterns. We check for known issues with that specific firmware version, configuration conflicts, and manufacturer service bulletins. This is engineering-level analysis — not a checklist.
3
Root cause identified and reported
You receive a written diagnostic report: fault identified, root cause analysis, supporting evidence (monitoring data, error log extracts, configuration screenshots), and clear resolution steps. If the fix can be applied remotely — a configuration change, firmware update, or settings correction — we can apply it during the session with your authorisation.
4
Manufacturer escalation if needed
If the fault requires manufacturer intervention — a warranty replacement, firmware patch, or hardware recall — we escalate directly to the manufacturer's technical team with a structured fault report. We follow up until the issue is resolved. Our reports are accepted by all major UK inverter and battery manufacturers and are formatted to get past first-line support directly to engineering.
Why installers use this service
You're good at installing. We're good at diagnosing. When the two skills overlap there's no problem — but some faults need a specialist who has seen the same issue across hundreds of systems and knows the fix immediately.
Faster resolution, less time on site
A remote diagnostic before a revisit often identifies the root cause and the exact fix needed — meaning one targeted return visit instead of multiple. For commissioning faults, we can resolve many issues in real time while you're still on site, avoiding a callback entirely.
Cross-brand experience
Most installers specialise in one or two brands. We support all of them. When you encounter a Sunsynk fault for the first time that you've never seen on a GivEnergy, there's a good chance we've resolved it before. That cross-brand experience is the value.
Independent credibility
When a customer disputes your diagnosis, or a manufacturer rejects a warranty claim, an independent engineer's report carries weight. We provide formal reports that are accepted by all major UK manufacturers and are suitable for dispute resolution.
Confidential and discreet
Your customer never knows we were involved. We work behind the scenes — you deliver the fix, you maintain the relationship. If you need us to speak to the customer directly, we can operate under your brand or as an independent third party.
Looking for an ongoing partnership? If you want us to handle aftercare for your customer base on a regular basis — fault triage, diagnostics, maintenance — we offer structured referral and white-label arrangements. See our full installer partnership page for details.
FAQ
Frequently asked
For urgent diagnostic overflow — where a customer system is down and you need a second opinion fast — we typically respond within 24 hours. Same-day response is available for safety-critical faults such as ground faults, arc fault indications, or systems that will not isolate. For commissioning support while you're still on site, call us directly and we'll aim to connect immediately. Standard (non-urgent) requests are handled within 48 hours.
Yes — every diagnostic session includes a written findings report. This covers fault identification, root cause analysis, supporting evidence (monitoring data extracts, error log screenshots, configuration details), and recommended resolution steps. For warranty claims and customer disputes, we provide a formal independent engineer's report with structured evidence that is accepted by all major UK manufacturers. See also our dedicated warranty claim support service if you need a standalone warranty report.
Yes — and this is one of the most common reasons installers contact us. If a system is not behaving as expected after installation — battery not charging from solar, CT clamp reading incorrectly, export limit not applying, EPS not switching over, monitoring portal not connecting, or inverter throwing unexpected errors — we can diagnose remotely in most cases. If you're still on site, we can walk you through the fix in real time over the phone. For post-installation quality assurance, see our post-install snag inspection service.
Completely. We work discreetly and never contact your customers directly unless you explicitly ask us to. Our involvement is invisible to the end user — you deliver the diagnosis, you deliver the fix, you maintain the relationship. If you do need us to speak to a customer, we can operate under your company brand (white-label) or as an independent third party, whichever suits the situation.
Yes. We provide structured aftercare arrangements where we handle fault triage, remote diagnostics, and maintenance for your customer base on an ongoing basis. Both white-label and referral models are available — in a white-label arrangement, we operate under your brand; in a referral arrangement, customers are directed to us as your recommended support partner. Pricing is agreed in advance based on your typical volume. See our for installers page for full partnership details.
B2B
Need technical backup on a fault?
Whether it's a complex diagnostic, a commissioning issue, or a manufacturer warranty that's going nowhere — tell us the situation and we'll come back to you with a clear plan. Engineer-to-engineer, confidential, from £75.
- All major inverter and battery brands
- Written diagnostic report included
- Confidential — your customer relationship stays yours
STS Solar Tech Support
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Got a solar fault or need a quick answer? Drop us a message — we usually reply within a few minutes. Mon–Fri, 9am–7pm.
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Got a solar fault or need a quick answer? Drop us a message — we usually reply within a few minutes. Mon–Fri, 9am–7pm.
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