A remote diagnostic session interprets the fault code in context — event log history, grid voltage data, system configuration — and gives you a clear cause and fix route.
Book your free remote diagnosticGivEnergy fault codesSafety: if you smell burning, see arcing or physical damage, isolate at the consumer unit immediately and do not restart.
Absolutely wonderful. Would recommend without hesitation. I had an issue I was thinking would never be fixed and they fixed it. Help, advice and support every step of the way. I can't recommend highly enough. Thank you so much ⭐
Ronald tried to help solve a fault with communications between battery and inverter. Whilst in the end a hardware fault was diagnosed and not possible to fix remotely his attempt to fix and guide me through steps to fault find were appreciated. He was available at a time convenient to my availability. Great service for anyone requiring independant tech support for their solar or battery system.
Ron is a life saver sorted out a connectivity problem and had to replace one of my inverters all good now so I can stop stressing. Thank you again
Very speedy response. Handled by a real human who took my system through a logical process with the desired outcome within minutes of them accessing my inverter settings. Ron passed me on to Ash, they are both ex-Givenergy people who clearly know their stuff and can give the reassurance of proper technical support now that the Givenergy support desk has closed. A worthwhile investment in ensuring my expensive kit is kept fully functioning.
Ron was very knowledgeable and patient as we worked through the cause of Givenergy Hybrid Inverter suddenly failing (with 0W grid). He was able to quickly identify the probable cause, and point me in the right direction to identify the ‘burnt out’ AC isolator switch & piece of cable, which I was able to find a local electrician to replace. The best £95 I have spent. Thanks Ron.
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
Red fault lights cover a wide range of causes — from self-clearing grid events to faults needing hardware repair.
The grid voltage at your connection point has risen above the inverter's G98/G99 limits (typically around 253V in the UK). Common in areas with high solar density. The inverter disconnects to protect the grid. Often self-clears when grid voltage drops.
A leakage current detected between the DC solar circuit and earth — often caused by water ingress into a junction box, MC4 connector, or cable conduit. Common after heavy rain. Self-clears when dry but the ingress point must be sealed.
The inverter's AFCI system has detected an arc in the DC wiring. Common on SolarEdge and Enphase systems. Do not reset without investigating — a confirmed arc fault represents a fire risk and requires a qualified engineer to inspect the DC cabling.
The inverter cannot communicate with the battery BMS. The inverter shows a red light while the battery side is also faulted. See battery communication fault for the full diagnostic process.
One or more solar strings is producing a current outside the inverter's expected range — from a short circuit, damaged panel, or failed optimiser. The inverter trips the affected string or all strings.
The inverter has overheated — typically from poor ventilation, a blocked heat sink, or high ambient temperature combined with high output. The thermal protection trips the inverter. Usually self-clears once cooled. Check that airflow around the inverter is not blocked.
Start here — these steps apply to all inverter brands.
Note whether the red light is solid or flashing and at what rate. Check the inverter's own display for a fault code number. On most brands the display alternates between the fault code and other information — watch it for 30 seconds. Even "E01" or "F23" gives you something to work with.
Open your monitoring portal and look at the event log or fault history. The same fault code will be logged here, along with the exact time it triggered. Look at what happened immediately before — was there a grid event, a firmware update, heavy rain, high temperatures? Context helps identify the cause.
Use the fault code guide for your inverter brand to understand what the code means. GivEnergy, Growatt, Sunsynk, SolarEdge, and Solis all have different code numbering systems. See the brand pages and fault code guides linked below.
For grid faults, isolation faults, and temperature trips: turn off the inverter via its AC and DC isolation switches, wait 5 minutes, turn back on (AC first, then DC). See the safe shutdown guide for the correct sequence. If the fault clears and generation resumes, monitor the portal over the next 24 hours to confirm it doesn't recur.
Do not reset if the fault code indicates: arc fault, string short circuit, hardware failure, or battery BMS fault. Do not perform more than one reset without professional input.
A fault that returns immediately or within a few hours of resetting indicates an ongoing problem that won't resolve itself. Continuing to reset masks the underlying cause. Book a diagnostic to get a proper assessment before the fault worsens or causes secondary damage.
A remote diagnostic reviews your full event log, grid voltage history, and system configuration to give you a definitive cause and a clear repair plan.
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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