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Brand hub · GivEnergy

Have you Giv’in? Has your installer Giv’up? Independent GivEnergy support that actually fixes the problem.

Battery not charging, portal offline, a red battery light, BMS Comm Fail, CT clamp errors — we diagnose GivEnergy systems at the engineering level. Remote-first. Evidence-led. Independent from GivEnergy and from your installer.
Update October 2026: GivEnergy Ltd entered administration on 9 April 2026. The free GivEnergy app works on your home network; remote access and history need the paid Premium plan. Administration facts.
Free remote diagnostic £125 only if we fix it remotely
  • Not affiliated with GivEnergy
  • All GivEnergy products supported
  • Evidence-led diagnosis
Not sure where to start?

Most solar faults are diagnosed remotely in a single session. Tell us what you're seeing and we'll work it out.

Book your free remote diagnostic

Safety: do not open inverter or battery enclosures. If you smell burning or see arcing, isolate at the consumer unit and call 999.

Excellent knowledge and service. Ron responded to my initial query really quickly (same day), and confirmed that he could add extra panels and battery to my existing GivEnergy setup - something I’d been told by other installers wouldn’t be possible. Two weeks later (!), scaffolding was up and Ron and his team were on site to fit the extra 5 panels and two more GivEnergy batteries. I now have a truly optimised system, which has made the most of the south facing roof space I have, without having to start again with new kit. I’m now generating enough on the solar to fill my batteries, and avoid using the grid. I’ve also exported far more than before. Brilliant experience, well recommended.

Mark Emery · Jul 2026 Google

Great communication from start to finish No question unanswered and very knowledgeable

glen fisher · Aug 2026 Google

Sts does a extremely great job. Thank you.

Roy Morgan · Jul 2026 Google

⭐⭐⭐⭐⭐ 5-Star Review – Solar Tech Support Installing solar panels is only the first step! To get the best possible performance and maximise your investment, you need to make sure your system is configured correctly and all settings are properly optimised. **Solar Tech Support did exactly that for me, and I couldn't be happier with their professional service!** Their knowledge, expertise, and attention to detail helped me optimise my solar system to get the most out of it. If you already have solar panels and battery storage, I highly recommend contacting Solar Tech Support for professional advice, system optimisation, and technical support. Don't just install solar panels – make sure you're getting the maximum benefit from your investment! ⭐⭐⭐⭐⭐ Highly recommended! Thank you, Solar Tech Support, for your excellent service!

Karolis Bagdonas · Oct 2026 Trustpilot

Ron took me through a diagnostic to confirm my GivEnergy Inverter had a fault. A common one as it turns out with the AC Inverter. As GivEnergy is defunct there is no immediate fix, aside from sourcing 2nd hand replacement. It may be that a fix becomes available over the summer which would make a lot of GivEnergy customers happy (Again)

Tony Deacon · May 2026 Trustpilot

I left an enquiry few days ago and got a call back today from Ron. I have FoxESS battery and inverter that seemed not doing the right job and after only few questions, Ron told me exactly what I need to do to restart my system, without even seeing it. After almost 2 weeks of not being able to use my FoxESS equipment, today is finally up and running. Very professional and knowledgeable. Thanks Ron

Micky Mihaela · Aug 2026 Google
GivEnergy Faults

Common GivEnergy problems we diagnose

Every fault below has a proven diagnostic path. Click through for the specific page or book a diagnostic if you're unsure.

Battery
Common
Battery not charging overnight

Charge windows look correct but battery stays empty. Octopus Intelligent, Agile, and Go tariff configuration errors. CT clamp misread causing the inverter to think demand is already met.

See diagnostic guide →
Technical
BMS Comm Fail

Inverter loses contact with the battery BMS: RS485 on LV GivBat packs, CAN on HV kits. Firmware mismatch, comms cable faults, HV termination issues, or BMS lock state after a protection event.

See diagnostic guide →
Alarm
Red light on the battery

Solid red means a fault that needs investigating. Flashing red on a Gen 1 or Gen 2 battery means very low charge. Note the colour, then check the event log. Do not open the unit.

See diagnostic guide →
Common
Battery not discharging

Battery shows full but house uses grid power. Paused battery, reserve level too high, Export First mode, or discharge power limit set to zero.

See diagnostic guide →
Common
Settings changing themselves

Charge schedule or system mode keeps reverting. Usually something else with control of the inverter: a smart tariff, Axle Energy during a grid event, or Home Assistant.

See diagnostic guide →
Smart tariff lockout

Settings greyed out or reverting because your energy provider has control via API. How to identify, understand, and remove the lockout safely.

See removal guide →
Seasonal
Cold weather performance

Battery stops charging below 0°C, capacity drops in cold weather. Temperature thresholds, winter schedule optimisation, and when it's normal vs a fault.

See cold weather guide →
System using grid with battery

Portal shows grid import despite full battery. Normal grid blips from inverter lag, configuration issues causing sustained grid usage, and when to investigate.

See grid usage guide →
New
EV charger not working

GivEnergy EV charger offline, fault codes, not charging, or charging slowly. LED status guide, both GivEnergy fault code lists, configuration modes, and network connectivity fixes.

See diagnostic guide →
New
Inverter not turning on

Blank display, no startup, won't restart after a power cut. Isolator checks, deep discharge recovery, startup sequence, and fault codes that prevent startup.

See diagnostic guide →
New
Solar not generating

Zero solar output or lower than expected. Export limit set to 0W, DC isolator off, grid overvoltage curtailment, standby mode, or MPPT fault. Hybrid, AIO and AIO 2 covered.

See diagnostic guide →
New
Battery not charging from solar

Solar generating but battery stays flat. Export limit blocks, CT clamp direction errors, AC-coupled PV inverter faults, reserve level set too high, or battery at 100%.

See diagnostic guide →
New
Click of death

Inverter repeatedly clicks and won't stay running. Relay cycling caused by AC startup conditions, grid instability, low SoC, or internal relay failure. Diagnosis and escalation path.

See diagnostic guide →
New
SOC bug — inaccurate battery %

Battery percentage drops suddenly, jumps in steps, or sticks at a fixed value. Gen 1 and Gen 2 BMS firmware versions 1036 to 3022 explained, calibration cycles, and when firmware is part of the fix.

See diagnostic guide →
Monitoring & Connectivity
Common
GivEnergy app or portal offline

App won't load, dashboard blank or inverter showing offline. Could be the app on your phone, local WiFi loss, a dongle fault, a cloud outage, a firewall blocking the dongle or a lapsed Premium plan.

See diagnostic guide →
WiFi dongle setup & reconnection

What the blue light means, first-time setup for plug-in dongles, built-in WiFi and the AECC dongle, reconnecting after a router change, and 2.4GHz and signal problems.

See setup guide →
Monitoring setup

GivTCP, givenergy.cloud, Home Assistant integration, or API access configuration. We set up monitoring correctly or recover a broken configuration.

See setup guide →
Restart guide: battery-only or full system

Battery-only restart first, then the full shutdown and restart sequence for Hybrid and AIO systems in the right order. Clears comms faults, stuck SoC readings and frozen displays.

See restart guide →
New
Battery calibration

Correct inaccurate SoC readings with soft or full portal calibration. When two batteries show different percentages or charge stops too early.

See calibration guide →
New
Portal guide

Dashboard navigation, charge schedules, system modes, device management, and what to do when monitoring data stops appearing.

See portal guide →
Firmware update guide

What a firmware update changes, why we update GivEnergy firmware manually to our own procedures, on a callout or by talking you or your electrician through it remotely, rather than from the portal or app, and the settings to check afterwards.

See firmware guide →
New
Router settings

2.4GHz band separation, WPA2 security, DHCP, and ISP-specific router settings for BT, Sky, Virgin, and EE. Essential when the dongle won't connect.

See router guide →
New
WiFi dongle chipset firmware

Update HF21/HFA21 dongle chipset to T27. Fixes persistent connection drops on modern routers. 7-step process via http://10.10.100.254, upload order matters.

See firmware guide →
New
AECC Multi-Connect Dongle setup

Setup guide for the All in One 2 and Gateway 2. WiFi via STA Settings at https://10.10.100.254/web/info, default admin/123456, AP hotspot security, and factory reset locations.

See AECC guide →
New
Local monitoring (no internet)

The free GivEnergy app works on your home network when the portal is offline: live readings and, since app version 4.0.5, the inverter's settings. No internet access or subscription needed.

See local monitoring guide →
New
Hardware diagnostic steps

Battery isolator positions, LED colour guide, 0°C temperature threshold, SoC checks, and the safe restart order. First checks before calling support.

See hardware guide →
New
Software diagnostic steps

Portal diagnostics, resetting charge/discharge schedules, pausing battery via Remote Control, and reading event log for fault codes. Software-side checks before escalating.

See software guide →
Configuration
CT clamp direction

Inverted readings, backwards battery behaviour. Most-missed GivEnergy installation error.

Guide →
Export limit settings

DNO cap not applied, wrong limit, or limit resetting after firmware update.

Guide →
EPS not working

House goes dark in a power cut despite having a battery. EPS disabled, wiring issue, or low SoC threshold.

Guide →
Gateway earthing in a power cut

On some AIO + Gateway systems, RCDs trip when the grid fails, or the AIO trips when it returns. The neutral-earth reference, what changed in 2024, what we test.

Guide →
Firmware update gone wrong

Settings reset, update stuck on Updating, monitoring stopped or new fault codes after an update. What to check, and when to contact us.

Guide →
80% battery and the 2024 firmware

Giv-Bat 5.2 and 2.6 are 80% by design. A 2024 update widened that on E.ON-era packs. Why we put them back to 3022.

Guide →
Commercial
Commercial All in One & PCS

The commercial catch-all: what the liquidation of GivEnergy Commercial Ltd means for warranties and support, design limits in the manuals, reported faults, and independent O&M.

See Commercial All in One & PCS →
Charge schedule setup

Timed Charge, Timed Discharge, Timed Export — the midnight rule, tariff-specific windows, and common scheduling mistakes.

Guide →
Tariff optimisation

Octopus Go, Agile, Intelligent, Flux, and Economy 7 schedule setup. Match charge windows to your tariff's cheap-rate periods for maximum savings.

Guide →
Energy management (EMS)

Timed Charge, Discharge, and Export slots, the midnight rule, multi-battery balancing, and target SOC configuration.

Guide →
Eco mode & system modes

How Eco mode works, why it stays on alongside a Timed Charge window, and what Timed Discharge and Timed Export do.

Guide →
Services

What we do for GivEnergy owners

Remote GivEnergy Diagnostic

We review monitoring data, app settings, and error history to identify the exact fault without a site visit.

✓ Fault path identified
✓ Settings validation
✓ Written engineer summary
Book remote diagnostic

Transfers Are Done in the App

We do not handle GivEnergy account transfers, because the owner can do them in the app. Our guide gives the steps, who to ask if you have moved in, and what to do if you have lost the email on the account or your installer has gone.

Account transfer guide

On-Site GivEnergy Repair

Battery comms cable repair, CT clamp correction, EPS circuit verification, hardware swap. Targeted visit — no guesswork on arrival.

✓ Evidence-led targeted checks
✓ Safety-focused report
✓ Repair or replacement path
Discuss visit

GivEnergy Warranty Support

GivEnergy Ltd is in administration, so we compile the fault evidence for the routes that may still pay: installer cover, insurance-backed guarantees and Section 75.

Warranty claim support

Tariff Optimisation

GivEnergy works well with Octopus tariffs — when set up correctly. We configure charge schedules and dispatch settings to maximise savings.

Tariff optimisation

GivEnergy Health Check

Full performance audit — compare actual vs expected output, check firmware, validate configuration, identify latent issues before they become faults.

Book health check
Fault Codes

GivEnergy fault code index

Seeing an error code in your app or on the inverter? Our full GivEnergy fault code index explains what each code means, common causes, and safe next steps.

·Grid & AC fault codes — voltage, frequency, isolation
·Battery communication faults — BMS Comm Fail
·Over-temperature & protection events
·Monitoring & connectivity errors

About GivEnergy systems — what you need to know

GivEnergy (also written Give Energy or Giv Energy) was one of the UK's most popular solar battery brands, with hybrid inverters, All-in-One units (the All in One range) and modular battery stacks installed across hundreds of thousands of homes. GivEnergy Ltd entered administration on 9 April 2026 — but the hardware itself runs on local firmware and continues working. STS supports GivEnergy systems independently. See our administration update for the verifiable record. Thinking of selling your batteries rather than keeping them running? Start with what to check before you sell a GivEnergy battery.

Inverter and battery talk to each other over a battery comms cable: RS485 on LV GivBat packs, CAN on HV kits. When that link drops, often after a firmware update or a power interruption, the event log shows a BMS Comm Fail. The GivEnergy portal (givenergy.cloud) and mobile app rely on a WiFi dongle (Gen 1/2) or built-in WiFi/LAN (Gen 3); when this loses connection — router change, firmware bug, hardware failure — the portal goes dark, though the system usually keeps running, so check the inverter's own screen.

GivEnergy systems work particularly well with Octopus Energy tariffs (Intelligent, Agile, Go) when configured correctly. Many reported issues with battery not charging on cheap rate trace back to incorrect charge window settings, CT clamp orientation errors, or SoC minimum thresholds.

If you're searching for GivEnergy repair UK, GivEnergy battery not charging, GivEnergy portal offline, GivEnergy BMS Comm Fail, or GivEnergy red light, STS provides independent diagnostic and repair support across the UK — not affiliated with GivEnergy Ltd.

Contacting GivEnergy

GivEnergy Software Ltd runs the GivEnergy app and portal, is still trading, and deals with software only, not hardware support or warranties. When we checked on 25 October 2026, its contact page on givenergy.cloud listed one route, the email address premium@givenergy.co.uk, with no phone number, live chat or WhatsApp. Its FAQ says that address is for app, website and Premium questions; installation, hardware and connectivity problems go to your installer.

GivEnergy Ltd, the UK company behind the batteries and inverters, has been in administration since 9 April 2026 and will not honour any more hardware warranties, so take a hardware fault to your installer first.

We are independent, with no affiliation to GivEnergy, and can help whether or not your installer is still around: the remote diagnostic is free, and you pay £125 only if we fix it remotely.

Yorkshire On-site

GivEnergy repairs & support in Yorkshire

We're based in Leeds and cover the whole region on-site — Barnsley, Sheffield, Leeds, Wakefield, Doncaster, Rotherham, Bradford, Huddersfield, York, Harrogate, Hull, the East Coast from Scarborough to Bridlington, and Middlesbrough and Teesside. Beyond Yorkshire we also cover Manchester, Nottingham, Derby, Bristol and Kent · Northern Ireland, with remote support in Ireland. If your GivEnergy system needs hands-on work, we can be there. Remote diagnostics free (£125 only if we fix it remotely), on-site repair from £295.

GivEnergy support in Yorkshire
We also support

STS supports all major inverter and battery brands — not just GivEnergy. If you have a mixed-brand system or are comparing options, visit the brand hub.

Browse all brands
Explore

More GivEnergy help

Administration update

Has GivEnergy gone bust? GivEnergy Ltd went into administration on 9 April 2026. Who is owed the money, what it means for your system, and how STS can help.

See administration update
All problems

All GivEnergy battery and inverter fault guides in one place: battery not charging, portal offline, BMS Comm Fail, EV charger, EPS, firmware, each with a fix.

See all problems
Setup guides

GivEnergy setup guides: WiFi dongle and AECC setup, portal and monitoring, battery calibration, firmware updates, restarting the system and router setup.

See setup guides
Configuration guides

GivEnergy configuration guides: charge schedules, CT clamp direction, eco mode, energy management, export limits, tariff optimisation, Axle Energy grid events.

See configuration guides
Account

GivEnergy account guides: how to transfer a system in the app, what to do if you lost the email or your installer has gone, and Axle Energy grid services.

See account
Warranty

GivEnergy warranty: 12 years on most kit from 11 Sep 2023, not honoured since GivEnergy Ltd's April 2026 administration. Try your installer, IBG or Section 75.

See warranty
Products

Engineer reference for the GivEnergy product range — LV, HV and three-phase hybrids, AIO, GivBat LV batteries, HV stackable kits, GIV-EV-7.2 EV charger.

See products
Fault codes

Independent GivEnergy fault code reference — every error code explained, root causes identified, and the diagnostic next step. Free remote diagnostic from STS.

See fault codes
FAQ

GivEnergy questions answered

Most common causes: incorrect charge window schedule, CT clamp direction error, BMS communication fault, or SoC minimum threshold set too high. See the full guide →
Local causes include router change, WiFi password update, or WiFi dongle hardware fault. Cloud-side causes include portal outages, firmware that broke cloud connectivity, or a lapsed Premium plan. Either way, the system usually keeps running, so check the inverter's own screen; for a cloud-side cause, the free GivEnergy app still works on your home network. If the dongle needs reconnecting to your WiFi, we can set it up on site, from £195. See portal offline guide →
A solid red status light means the battery has found a fault, and it needs investigating. A flashing red light on a Gen 1 or Gen 2 battery means a very low state of charge, not a fault. Do NOT open the battery. Note the colour, then check the event log in the app (your device, then Event History) or on the portal (My Inverter, then Event Log). See red light guide →
Yes. A BMS communication fault (BMS Comm Fail) means the inverter has lost contact with the battery's BMS. LV GivBat packs talk to the inverter over RS485 and HV kits over CAN. The usual causes are a firmware mismatch, a damaged or loose battery comms cable, incorrect termination on HV kits, or a BMS lock state after a protection event. Many can be recovered remotely. See BMS Comm Fail guide →
On a hybrid inverter, EPS must be explicitly enabled in settings. It also requires a dedicated EPS output circuit and minimum battery SoC threshold to be met. The Gen 1 All-in-One (6kW and 3.6kW models) has no EPS circuit: it backs up the whole house through a Giv-Gateway, or not at all. See EPS configuration guide →
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Ready to fix your GivEnergy system?

Tell us what's happening. We'll review your details and come back with a clear diagnosis path — usually same day.

  • Not affiliated with GivEnergy Ltd
  • No fix, no fee covers remote fixes. On-site work is quoted in writing before we start.
  • On-site visits available

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