After recently changing my fuse board the ct clamp broke, this meant my inverter was not communicating properly with my GivEnergy system. After several people letting me down, finally got put in touch with Ron. He came out within 24hours & resolved the fault within an hour, no fuse just got on with it. Work was tidy & arrived when he said he would. Ron followed up a few days later to confirm all was still good, great service from all involved.
Lux Power common problems & faults
- Free remote diagnostic
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My GivEnergy solar and battery system is failing intermittently, GivEnergy is in administration and so is my installer, so it was a relief to get Ron’s expert advice.
Solar Tech Support is an absolute lifesaver. My solar and battery system stopped working completely, but after one quick phone call, they fixed the problem straight away. The original provider, GivEnergy, has gone into administration, leaving me entirely without support from the original installers. It was a terrible situation on GivEnergy’s part, but thankfully, Solar Tech Support came to the rescue!
I have a GivEnergy system consisting of two batteries, two inverters and a controlling EMS (Energy Management System) which has not worked since Nov 2025. After six months I discovered Solar Tech Support, reached out to them and Ron phoned me back – how often do you get that service? Could not be more helpful – worked directly with me over the phone, outside what I would call normal working hours. Lucid explanations and we were able to discuss the issues and history using camera and email history. As this was a very rare setup, Ron was able to access an EMS expert in the field to confirm the solution. One sunny day in, I am now only paying for standing charge and a few pence for spikes in grid consumption while battery catches up with house demand.
Great experience with STS great communication from Ron, very helpful and knowledgable. Installed me a second Givenergy battery to help take the strain off my original 9.5 that needs refurb due to a weak cell. They secured me an 8.2 arranged install. Levi arrived the whole install was done within 1.5 hours - great tidy job. Worked with me to alter my setup to allow easy removal of my 9.5 when i can get it away for refurb - very happy with their service and its reassuring to know there is a company out there that can help look after my givenergy system
Wow... a firmware update to my inverter sent the whole system into meltdown – the battery discharged, and the house seemed to be drawing power, and the solar, who knows where that was going? Aghhh... A short email exchange with Roland and Solar Tech Support sorted the problem... the firmware had reversed a setting (from when it was installed), and the CT clamp needed to be reversed. As soon as I had done that, the world returned to normal. Thanks, Roland; there is no way I would have come to that conclusion. Would I recommend them? You bet! Worth the fee? You bet, again!
What actually goes wrong with Lux systems
Most Lux faults we see come down to two things: the battery not charging on the cheap rate overnight, and the LXP inverter losing contact with its UHome battery stack. Neither usually means dead hardware.
The charging one is nearly always a settings problem in the LuxPower portal. A charge window that never got saved, the grid charge toggle left off, or the inverter clock stuck on GMT after the clocks go forward, so the window fires an hour late and misses the off-peak rate. Our guide to Octopus cheap-rate charging on Lux walks through it step by step.
The UHome BMS communication fault is usually a loose CAN cable, duplicate module addresses, or a battery count that doesn't match the physical stack. We diagnose both remotely, free, and you pay nothing if we can't fix it.
2 common problems & faults we cover
Each topic links through to an engineer-led step-by-step guide.
Octopus cheap-rate charging — fix it
Your Lux Power battery should be charging overnight on the cheap rate, but it's not. Free remote diagnostic — no fix, no fee. Same-day.
See Octopus cheap-rate chargingUHome BMS communication fault — fix it
Your LXP inverter shows a BMS communication fault. The UHome battery LEDs may look normal and the inverter shows online, but the battery…
See UHome BMS communication faultLux fault questions answered
Need a Lux Power engineer?
Tell us what's happening with your Lux Power 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.