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SolaX · Common problems & faults

SolaX common problems & faults

STS engineers diagnose and repair 3 common problems & faults on SolaX systems. Click any topic below for a full step-by-step guide, or book a free remote diagnostic and we'll walk you through it.
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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.

David Lewin · Jul 2026 Google

Our SolarEdge PV system with LG batteries had its first hiccup after 8 years of hard work. The Inverter failed. Fortunately I found Solar-Tech-Support who diagnosed the problem very quickly, ordered a replacement unit and fitted it shortly after we received the unit from SolarEdge. Very thorough and professional approach. Thank you, a solid 5 star recommendation.

Les Bennett · Jun 2026 Google

Ron made more sense in 20 mins than our installer has done over the last 12 months There is a jungle out there and you need someone like Ron to give a comprehensive overview and solution

David · May 2026

Massively massively recommended. We had a big battery array (49kW across three phases) put in four years ago. c £35k cost. It’s been a total nightmare for many reasons, not least 1. our installer being totally useless and unresponsive and 2. Givenergy, our battery supplier, going bust. Long story short it had never worked anywhere near properly despite countless hours on phones and emails; the best we’d achieved was one third of the batteries working. Rather than write it off, I asked a PM friend to try to source someone who could come on site and review and revive the system. He found Solar Tech Support and Ron. Ron assured us he was the man to get it going again. After so many years of pain, I was not convinced but, true to his word, five hours later it was up and running. Lovely chap, super knowledgeable with a support team to lean on who are also clearly super technical. I honestly didn’t think there was much chance of getting this array going ever again so was absolutely delighted when Ron and team pulled it off. Bravo!

Will Wynne · Jun 2026 Google

Very very helpfuland so quick. Made sure that a non expert like myself understood what the problem was and how to resolve it.

Declan S · Jun 2026

I’ve used Ron a couple of times regarding issues with my Givenergy inverter and batteries after Givenergy went bust. My system stopped working properly so it was a stressful time but Ron resolved the issues and got my system working properly again. He’s really helpful and knowledgeable and I wouldn’t hesitate to recommend him and to use him again if the need arose.

Michael Fairhurst · Jun 2026 Google

What actually goes wrong with SolaX systems

Most SolaX faults we see are settings or communications problems, not broken hardware. The X-Hybrid range has a lot of overlapping configuration in SolaX Cloud, and one wrong toggle is enough to stop the battery charging. The classic case is ForceTime not charging on your Octopus window: the schedule is set but Charge from Grid is off, the inverter clock has drifted an hour after the BST changeover, or the work mode is quietly overriding the whole thing.

On the battery side, a T-BAT or Triple Power showing 0% when it is plainly charged is nearly always a BMS communication fault. The usual suspects are a loose CAN cable, a DIP switch set wrong on stacked modules, or the battery type left on T-BAT after a Triple Power upgrade. The battery itself is normally fine.

Grid disconnection trips (E012, PLL Lost) on sunny afternoons are different: the inverter is doing its job, dropping off when local grid voltage tops 253V. That usually needs export limitation checked or a DNO report rather than an inverter repair. Whichever fault you have, the remote diagnostic is free. No fix, no fee.

FAQ

SolaX fault questions answered

Start with the fault history in SolaX Cloud, because the code narrows it down. E012, PLL Lost or IE02 means a grid voltage or frequency problem, usually local overvoltage on sunny afternoons rather than a faulty inverter. BMS_Lost, BMS_Internal_Err or C1 means lost communication with the T-BAT or Triple Power battery: typically a CAN cable, a DIP switch on stacked modules, or the battery-type setting. No fault code but a flat battery in the morning points at ForceTime configuration. Note when it happens and what the weather was doing.
Most of them, yes. ForceTime and overnight charging problems are configuration, sorted through SolaX Cloud in a single session: clock offsets, work mode conflicts, SoC targets and the Charge from Grid toggle. A wrong battery-type setting after a T-BAT to Triple Power upgrade is a remote fix too. For grid trips we read your voltage data and tell you whether it is an export limitation setting or a network problem for your DNO. What needs a visit is physical work: a damaged CAN cable or a failed BMS board.
Nothing to find out what is wrong. The remote diagnostic is free, no fix, no fee: we read your SolaX Cloud fault history and live data and tell you what the problem is. If it is a fix we can do remotely, such as a ForceTime configuration or a battery-type correction, that is from £75, and you only pay if it works. If it needs hands-on work, like a failed BMS control board, we quote the on-site visit first.
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