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.
I contacted STS when I was having problems with my GivEnergy AC3 inverter and they were extremely helpful. They took the time to properly investigate the system, talked me through a number of things we could try remotely, and ultimately inspected the system to establish what had gone wrong. They identified that the inverter’s battery board had failed beyond repair, while confirming that the two batteries themselves were still healthy. They also provided a clear report explaining their findings, which was particularly helpful given the current situation with GivEnergy. What impressed me most was their knowledge and willingness to help. They didn’t just give me a quick diagnosis — they took the time to understand the problem and explain the options available to me. I’m very pleased with the service I received from STS and would have no hesitation in recommending them to anyone needing help with a GivEnergy solar and battery system.
My installer put me through Hell with so botched install that you can not imagine Than Ron came , He did not managed to do miracles (because my system components were impossible to work together) and he Gave me a detailed report of what is wrong , why is wrong , why can not be fixed etc. with all the details which I can use in a claim. Without His his help knowledge and attitude I would've been lost
Sts does a extremely great job. Thank you.
Particularly useful in helping to fix my GivEnergy All in One system with a disabling fault.
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
Try them in this order. The label is by far the quickest — only use the alternatives if the label is damaged, missing, or the unit is inaccessible.
The brand name, model number, and serial number are on a sticker on the front, side, or back of the unit. The quickest route — takes 30 seconds if the unit is accessible.
How to read it →If you still have access to the previous owner's monitoring portal, the brand, model, and serial number are listed in the device or system settings section.
Only works while the previous owner's login is accessible.
The MCS certificate issued at installation legally requires the inverter manufacturer and model to be listed. It should be in your property documents pack from completion.
How to find MCS documents →Once you have the brand name, jump to the brand visual reference below to confirm it and get a direct link to the right guide for your system.
Every grid-connected solar system has an inverter — it is always mounted inside on an internal wall. These are the most common locations, in order of how often we see them in UK properties.
The most common location for hybrid inverters installed from 2019 onwards. Usually on the back or side wall, near the consumer unit. If there is a battery, it will be on the floor beside it.
Second most common. Typically mounted beside or near the boiler, with cables running through the ceiling toward the roof space.
More common in older solar-only systems (pre-2018). The inverter will be near the point where the panel cables enter the roof. Bring a torch.
Common in terraced and semi-detached houses without a separate garage or utility room. Check under-stair cupboards for a wall-mounted box with cables.
Occasionally installed near the hot water cylinder. Not common, but seen in properties without a garage or utility room with suitable wall space.
Enphase systems use microinverters — small units mounted under each panel on the roof frame or loft rails, not one central box. If there is no wall unit, you likely have Enphase.
A small number of older or commercial-grade installations have the inverter in a weatherproof external enclosure on an outside wall. If you cannot find it internally, check outside near the main cable entry point.
Still can't locate it? Follow the solar circuit cable at the consumer unit — it leads directly to the inverter.
The label is the definitive source for your inverter's identity. Here's exactly what you're looking for.
Check the front, right side, and back of the inverter. Most units have a sticker on the front or side. On some older units (particularly Growatt and SMA) the detailed spec label is on the back — if the unit sits close to the wall, look for a fold-out or secondary label on the side panel. Some GivEnergy units also have a QR code that links directly to the product page — scanning it will confirm the brand and model immediately.
The manufacturer name is usually the most prominent text on the label — GivEnergy, Sunsynk, SolarEdge, Growatt, Solis, Enphase, Fronius, SMA, Huawei, Fox ESS. On SolarEdge units the label will say "SolarEdge Technologies". On Solis units it may also show "Ginlong" — the parent company. If the brand name isn't immediately obvious, look at the logo on the front face of the unit.
The model number identifies the product type — for example GE-5.0 (GivEnergy 5kW), SPH5000TL BL-UP (Growatt 5kW hybrid), or SE6000H (SolarEdge 6kW). The serial number is unique to your specific unit — a string of letters and numbers, usually 10–20 characters.
Photograph the full label clearly. Both are required for warranty claims, most monitoring access transfers, and any future manufacturer contact. Store them in your phone notes or a home folder.
If the previous owners had a battery system, look for a second box — often mounted alongside or below the inverter on the floor or wall. Common battery brands include GivEnergy (Giv-Bat), Sunsynk, Pylontech, BYD, and Sungrow. The battery may be from a different manufacturer than the inverter — this is normal.
Photograph the battery label separately. The battery and inverter are registered and sometimes monitored independently — you will need both serial numbers if you contact either manufacturer for warranty or support.
Match what you see on the unit to the descriptions below. Each entry includes what the brand looks like, the common UK models, the monitoring portal, and a link to our brand guide.
White unit, portrait format, usually with a colour touchscreen display. Typically installed in garages alongside a matching white battery. Common models: GE-5.0, GE-6.0, All-In-One (all-in-one inverter and battery), Gen 3 range. Label shows "GivEnergy" clearly. Monitoring via GivEnergy portal (givenergy.cloud) or GivEnergy app.
GivEnergy brand guide →Cream or white unit, landscape or portrait format with "Sunsynk" on the label. Common models are the 3.6kW, 5kW, 8kW, and 12kW hybrid inverters. Often paired with Sunsynk, Pylontech, or Freedom Won batteries. Monitoring via the Sunsynk app (Android or iOS).
Sunsynk brand guide →White or grey unit. Label reads "SolarEdge Technologies". SolarEdge is an optimiser-based system — small power optimisers (DC:DC converters) are also mounted under each panel, but the main inverter is the central wall unit. Common single-phase models: SE3000H through SE10K. Monitoring via monitoring.solaredge.com.
SolarEdge brand guide →Grey or white unit with "GROWATT" printed prominently. Solar-only models: MOD and MIN series. Hybrid models: SPH and MIN TL-X series. The SPH series (Growatt hybrid) is distinct from the MOD/MIN solar-only range — SPH units are larger and have battery connections. Monitoring via ShinePhone app or ShineServer portal (shine.growatt.com).
Growatt brand guide →White unit with "Solis" or "Ginlong Solis" on the label. Ginlong is the parent company — Solis is the inverter brand. Common in solar-only installations from 2015–2022, with hybrid models (S5, S6 series) in more recent installs. Monitoring via SolisCloud portal (home.soliscloud.com).
Solis brand guide →Enphase does not use a central wall-mounted inverter. Instead, individual microinverters (IQ7, IQ8 series — small rectangular units roughly the size of a hardback book) are mounted under each solar panel on the roof rail or loft frame. If you cannot find a wall-mounted unit but have solar panels, check the loft for small Enphase-branded boxes on the panel mounting rails. Monitoring via Enlighten portal (enlighten.enphaseenergy.com).
Enphase brand guide →White unit, typically with an orange logo or orange accent on the casing. Austrian-manufactured. Common domestic models: Fronius Primo (solar-only, single-phase), Fronius Symo (three-phase), Fronius GEN24 Plus (hybrid, more recent). Label reads "Fronius". Monitoring via Fronius Solar.web portal.
Fronius brand guide →White or light grey unit. Label reads "SMA Solar Technology". Common in older UK solar-only systems. Sunny Boy (single-phase, solar-only) and Sunny Tripower (three-phase) are the most frequently encountered UK models. More recent Sunny Boy Storage units are hybrid-capable. Monitoring via SMA Sunny Portal or Sunny Places.
All brand guides →White unit with the Huawei logo. SUN2000 series is the primary UK model range — available in solar-only and hybrid configurations. Often paired with Huawei LUNA2000 batteries. Monitoring via FusionSolar app. Installations from 2020–2023 are common; some UK installers moved away from Huawei after 2023.
Huawei brand guide →The H1-G2 is a single-phase hybrid, the KH a larger single-phase hybrid (7 to 10 kW) and the H3 a three-phase hybrid. The AC1 is AC-coupled: it has no PV input, and it adds a Fox ESS battery beside an existing solar inverter. The EVO is an all-in-one. The T-series is a three-phase solar-only (string) inverter, not a hybrid. Fox ESS hybrids work with Fox ESS's own batteries, such as the EP, the EQ or the older ECS.
The model and serial number are on the label, the inverter's display and the FoxCloud 2.0 app's device list. Monitoring is through the FoxCloud 2.0 app or foxesscloud.com. Some models have the logger built in: Fox ESS UK's H1-G2 and KH pages list integrated WiFi and LAN (Fox's global site and Tech Hub call these the H1-G2-WL and KH-WL). Others use a plug-in WiFi, LAN or 4G stick at the bottom of the inverter. If the app shows no data, see our Fox Cloud offline guide. If the account is still in the previous owner's name, see monitoring account transfer. See our Fox ESS manuals and datasheets and Fox ESS fault code index.
Fox ESS brand guide →Not listed here? See all the brands we cover — including AlphaESS, SolaX, LUX Power, Sofar, Sigenergy, and others.
Four alternatives to try, in order of reliability.
Check the display screen. Most inverters show the model number or brand name on the display during startup, or within the settings menu. Press any button to wake the screen. Some units cycle through brand name → generation figure → status information on the idle display.
Look for an installer sticker. Most solar installers attach a sticker near the inverter or on the inside of the consumer unit door, listing their contact details and the system specification — usually including inverter brand and model. Check the wall immediately around the inverter and the consumer unit door.
Search any partial text online. Even a partial model string — for example "SPH5000", "GE-5", or "SE6000H" — typed into a search engine will return results that identify the manufacturer. Use the exact string from the label, including hyphens and numbers.
Check the MCS certificate. The MCS certificate from your property documents pack lists the inverter manufacturer and model as a legal requirement for any UK system installed since 2010. If it is missing, your solicitor may hold a copy — or see our guide to finding your MCS documentation.
Check the monitoring app if still active. If the previous owner's monitoring app or portal is still showing data, the device settings section will usually display the inverter make, model, and serial number. This only works while the previous owner's login is accessible — once they close the account or you transfer it, this route closes.
The next step for most new homeowners is getting monitoring access and registering the system in your name. Each brand uses a different process and portal.
Monitoring, setup guides, fault diagnosis, and configuration for all GivEnergy inverters and batteries.
GivEnergy hub →Battery charging problems, monitoring setup, and common fault codes for Sunsynk hybrid systems.
Sunsynk hub →Red light faults, no production diagnostics, and monitoring portal access for SolarEdge systems.
SolarEdge hub →Or browse all our brand guides — Growatt, Solis, Enphase, Fronius, Huawei, Fox ESS, and more.
Can't find or identify your inverter? We can visit on-site to locate it, check the model and serial number, and assess its condition — across our full coverage area from Leeds to Sheffield, York, Hull, and further afield.
See all areas we cover →If the label is unreadable and none of the alternatives work, a remote diagnostic can identify the brand and model from monitoring data alone. If you need a written system condition report for insurance, a mortgage, or conveyancing, that is included in every inspection.
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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