Optimiser offline, arc fault light, no production — we diagnose SolarEdge systems remotely in a single session.
Book your free remote diagnosticSafety: If the arc fault light is active, do not reset more than once — isolate at the AC and DC switches and call us first.
Our 3 year old GivEnergy batteries froze. They were showing 0% on the app, but they were fully charged. Some how Ron took over our inverter and remotely cured the problem. We live in King’s Lynn, he is in Leeds I believe. Very grateful.
Absolutely fantastic experience, after months of being fobbed off with rubbish from the installer Ronald fixed my issues in a few hours, his attention to detail and his tenacity was amazing, not only did he go above and beyond but did not ask for payment i had to ask him how to pay. If you need a solar fix this company is brilliant
Super support. Delighted I found them. System battery was down for quite a while and no one would try to fix it as GivEnergy out of business. A few hours later and I’m up and running again. Brilliant service!!! Highly recommend them.
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.
Absolutely fantastic customer service. The team were incredibly helpful, responsive and genuinely willing to do everything they could to help get things sorted. With all the uncertainty surrounding the future of GivEnergy at the moment, it was particularly reassuring to have people who were knowledgeable, approachable and prepared to step in when needed. After a glitch with my firmware update caused problems with my system, these guys really did come in and save the day. They took the time to investigate the issue, explain what was happening and work towards getting everything back up and running. It’s refreshing to deal with a company that genuinely seems to care about its customers and is willing to go the extra mile when something goes wrong. Superb service from start to finish. Many thanks for all the help and support — it’s very much appreciated. Highly recommended.
Fantastic support. We have a Givenergy system where one of our batteries was not working. Ronald successfully helped us get it back up. His perseverance was amazing….and it shows what REAL customer service means. Can’t thank you enough Ron!
Every fault below has a proven diagnostic path. Click through for the specific page or book a diagnostic if you're unsure.
Inverter powered on but generating nothing. Usually DC string fault, optimiser failure, grid disconnection, or AFCI trip. Each optimiser works independently — one failed unit reduces output but rarely stops everything.
See diagnostic guide →SolarEdge HD-Wave inverters display error codes on the LED panel and in the SetApp. Codes beginning with 'G' indicate grid faults. 'OP' codes indicate optimiser communication failures.
See diagnostic guide →The arc fault protection circuit has interrupted DC power. This is a safety event — not an arbitrary trip. Common causes: damaged DC cable insulation, corroded MC4 connector, or failed optimiser. Requires investigation before reset.
See diagnostic guide →HD-Wave models (SE3000H–SE6000H) from 2017–2020 batches have higher failure rates. All LEDs off, thermal shutdown, or zero AC output. Covered by 12-year warranty — we handle the claim and coordinate the replacement.
See diagnostic guide →An N/A in the SolarEdge portal means the optimiser isn't communicating. Could be a failed unit, loose DC connector, or shading causing low Vmp. We identify which optimiser is affected and whether it needs replacement.
See diagnostic guide →Optimisers communicate over the DC power line (PLC). A wiring error, damaged pair, or incompatible optimiser firmware version can break the communication chain for part or all of a string.
See diagnostic guide →SolarEdge allows panel-level output comparison in the monitoring portal. Underperformance is usually caused by one or more optimisers degraded, soiled panels, or partial shading configuration error.
See diagnostic guide →The SetApp dashboard or SolarEdge monitoring portal shows no data. Causes: inverter comms module offline, ethernet/WiFi drop, or portal outage. The system usually keeps running, but offline doesn't prove it, so check the inverter's own screen or status lights.
See diagnostic guide →SolarEdge monitoring devices require 2.4GHz WiFi. After a router change or WiFi password update, the communication module 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 diagnostic guide →SolarEdge displays fault codes in the monitoring portal and on the SetApp. Common error prefixes: 'G' (grid faults), 'OP' (optimiser communication), 'AFCI' (arc fault detection), 'AC' (AC side faults). Share your exact code when you book — we identify the root cause using monitoring portal data and SetApp logs.
We review SetApp data, monitoring portal history, and error codes to identify the exact fault remotely.
Installer gone bust or locked out of the SolarEdge portal? We recover access and transfer monitoring account ownership.
SolarEdge inverter lost WiFi after a router change or password update? Reconnect via SetApp or SolarEdge Go and restore monitoring. If it still won't connect, we can set it up on site, from £195.
G99 export limit curtailing too much? Dynamic vs fixed limiting, CT clamp orientation, meter communication faults.
Optimiser replacement, DC cable fault location, arc fault investigation, CT clamp correction.
Download datasheets, installation manuals, warranty documents and monitoring guides for SolarEdge HD-Wave inverters, optimisers and StorEdge batteries. Self-hosted and always current.
SolarEdge is the UK's largest solar inverter brand by installed capacity. Unlike conventional string inverters, SolarEdge pairs each panel with a power optimiser — a DC-DC converter that maximises output from each module independently. The inverter then operates at a fixed input voltage (the SolarEdge 'HD-Wave' principle), which improves efficiency and makes the system safer to work on (DC strings run at a fixed 1V when the inverter is off). The monitoring portal provides panel-level output data — a significant advantage for fault diagnosis.
The most searched SolarEdge issues we see are: SolarEdge not producing, SolarEdge arc fault, SolarEdge optimiser not communicating, SolarEdge monitoring offline, and SolarEdge installer gone bust. SolarEdge systems are commissioned using SetApp — a mobile tool that replaces the traditional display. If your installer didn't complete commissioning or you've lost access, we recover and verify the configuration. STS provides independent SolarEdge support across the UK — not affiliated with SolarEdge Technologies Inc.
STS supports all major inverter and battery brands — not just SolarEdge. If you have a mixed-brand system or are comparing options, visit the brand hub.
Browse all brandsIndependent SolarEdge problems support across the UK — 6 faults STS engineers diagnose and repair. Free remote diagnostic, no fix no fee.
See all problemsIndependent SolarEdge setup support across the UK — 2 setup procedures STS engineers explain step by step. Free remote diagnostic, no fix no fee.
See setup & guidesIndependent SolarEdge configuration support across the UK — 1 configuration topic STS engineers tune and configure. Free remote diagnostic, no fix no fee.
See SolarEdge configuration & tuningYour solar system is generating, but not as much as it should. This guide covers shading, panel degradation, inverter efficiency losses, CT clamp issues.
See UnderperformingSolar monitoring portal showing offline? Tell a local WiFi fault from a dongle hardware failure, a firmware issue or a cloud-side outage, and fix it.
See monitoring offlineFull index of SolarEdge inverter and power optimiser fault codes — what each code means, causes, and where to find them in SetApp and the monitoring portal.
See fault codesDownload SolarEdge datasheets, installation manuals, warranty PDFs, app guides and wiring diagrams. Free remote diagnostic — no fix, no fee. Same-day.
See documents & downloadsTell us the fault code or describe what you're seeing — monitoring portal dark, arc fault light, optimiser N/A. We'll identify the cause and give you a clear path.
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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