Had issues with 10yr+ installation. 1 inverter going into alarm mode, unable to access monitoring apps and wanted someone to review and document worthiness of the 2 systems I have. As you will find with older systems, the original installers have moved on, other companies only want to replace and install new, or make up silly prices as they don't want the work, so struggling for 18 month plus trying to source someone to do this. Ronald managed to fit me in the day after contact as he was in the area. Spent a couple of hours on site, found issue with the inverter alarm and he monitoring this to find a total solution, got me back onto the monitoring apps, provided a report on the installations and identified potential areas of concern. These are the people you need for diagnostic reviews of your installations, long term industry professionals, who have a wealth of knowledge gained through working in the industry, know the differing systems and how to contact and approah the companies involved. These are the people you need if you are having issues with installers and / or product and/or supply companies.
Sunsynk setup & how-to guides
- Free remote diagnostic
- No fix, no fee
- All major brands supported
Any long suffering Givenergy customers are strongly recommended to use solar tech support. They fixed my battery issue in couple of hours.
Great service from STS after a power cut and brownout left my GivEnergy inverters effectively useless. After filling the enquiry form out I was promptly given clear instructions by email explaining how to run their diagnostic software and they were working remotely in minutes. Soon after my inverters were back running again. Very helpful and knowledgeable people - thank you.
My old solax packed in and was replaced by solar tech support. I am impressed at the very short time scale, sorted in only 3 days. Some were quoting 2-3 weeks. The old unit and all the packing was taken away.
Contacted Solar Tech about my Givenergy battery storage system that wasn't working. Battery status was "idle". Given the company Givenergy had gone bust, I need independent quality technical help. Very patient and clearly very knowledgeable about battery systems Ron diagnosed possible issues and suggested several possible remedies. Worked our way through them and fortunately it began to work. The fault was very specific and only an experienced engineer would have thought to check. Suffice to say I'll be back if I need independent support again. Lastly you only pay if there is a solution. Outstanding.
Had a problem with my GivEnergy battery which had decided to charge and discharge to a very limited extent. From AI, felt that the problem was probably a calibration issue on the Battery Management System, but which I could not fix myself. So contacted Solar Tech Support, and Ron was brilliant in being able to identify, confirm and fix the issue remotely and very speedily. Thoroughly recommend this outfit
What actually needs setting up on a Sunsynk hybrid
On a Sunsynk the hardware rarely needs touching — it is the LCD configuration that decides whether the system behaves. The screen hides a lot behind eight icons (Basic, Battery, Grid, System Mode, Advance, Aux Load, Fault Codes and Li BMS), and the settings that matter most for a UK home all live under Battery and System Mode. Get the battery type, charge schedule and export mode right and the system does exactly what you want; get one wrong and it looks faulty when it is simply mis-set. Our hybrid inverter setup guide walks every screen in the order you would actually configure it.
Three things catch Sunsynk owners out more than any other. The clock does not auto-adjust for BST or GMT, so a one-hour drift quietly shifts your cheap-rate charge window off the tariff. Time slots cannot cross midnight, so an overnight window has to be split into two slots. And on lithium batteries the Protocol number under Li BMS must match your exact battery model, or BMS communication fails and the SoC reads zero. None of these are faults — they are settings.
As independent engineers we are happy for you to follow the guide and set it up yourself for free. If you would rather we did it, a remote setup session is a fixed £145. If something was working and has stopped, or a wrong setting is causing a problem, the remote diagnostic is free and you pay £125 only if we fix it. Anything that genuinely needs an engineer on site starts from £295.
1 setup guide we cover
Each topic links through to an engineer-led step-by-step guide.
Sunsynk setup questions answered
Need a Sunsynk engineer?
Tell us what's happening with your Sunsynk system. Free remote diagnostic, no-fix-no-fee. Most configuration faults resolved during the 30-minute session.
- No fix, no fee covers remote fixes. On-site work is quoted in writing before we start.
- Emergency response within 4 hours during business hours
- Written report regardless of outcome
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.
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Got a solar fault or need a quick answer? Drop us a message and we usually reply within a few minutes. Mon–Fri, 9am–7pm.