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
For installers · Second-line technical support
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.
£95 trade rate, per session — confidential
- 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
Support for installers
Trade-rate diagnostics, commissioning help, and second-opinion fault-finding across every major inverter and battery brand. Talk to an engineer, not a call centre.
Get in touchSuperb work from Ronald. Cannot recommend highly enough. Figured out my problem late into night, going above and beyond! Many thanks to him
rohit s · Jul 2026 Google
Solar Tech have been everything you expect and want from a support organisation. Easy to contact, quick to respond and their expertise and knowledge about GivEnergy Systems was amazing. All the work was done remotely, and they guided me through the recovery of a failed system, which ended up to be down to a physically damaged USB key installed in production that was corrupted and stopping one battery from working, locking the whole system. All fixed and the system is working again. Massive thanks to the team and their help. Will be my goto for any future issues with our GivEnergy system. The pictures shows the condition of the USB as installed..
Paul Davies · Jul 2026 Google
Absolute legend found the fault in 5mins definitely will be using again definitely would recommend to others .
namas raw feeders · Sep 2026 Google
Absolutely wonderful support. I have a GivEnergy system that was installed in 2022, and a firmware update was flagged in the app, so I proceeded to update the software .... and immediately regretted it, as my inverter came up with an error, and was not working at all! With no GivEnergy support available, and my installer saying there was nothing he could do, I googled help, and found Ron. What a stroke of good luck! Submitted an on line enquiry late morning, and received phone call just after 5 pm, and later that evening Ron was able to supply me with old firmware no longer available on the GivEnergy web site. I was then able to update the firmware using a GivEnergy youtube video as reference, and hey presto the system was back up and running. One further slight adjustment by Ron and we are back normal. What a relief. I have no hesitation in recommending Solar Tech Support if you have a problem. Great service! And if you are a GivEnergy system owner, whatever you do, DO NOT UPDATE FIRMWARE!
Neill Ginn · Jul 2026 Google
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
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. GivEnergy is the exception: it entered administration in April 2026 and its manufacturer support has closed, so GivEnergy cases run through the available warranty channels (installer workmanship cover, IBG, Section 75, MCS Consumer Code) rather than GivEnergy support — see our GivEnergy administration page.
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.
Frequently asked
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.
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.
Remote technical support sessions are charged at a trade rate of £95 per session, with the written findings report included. That covers complex fault diagnosis, commissioning support, firmware guidance and manufacturer escalation within the session. For ongoing aftercare partnerships, whether white-label or referral, pricing is agreed in advance based on your typical volume.
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, £95 per session.
- All major inverter and battery brands
- Written diagnostic report included
- Confidential — your customer relationship stays yours
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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