The red light tells you there's a fault — the portal event log tells you what it is. We review your event log remotely, identify the exact fault code and cause, and tell you whether this is a settings fix, a restart, or something that needs a site visit.
Book your free remote diagnosticGivEnergy fault code indexNot affiliated with GivEnergy Ltd. Independent diagnosis and repair.
STS were incredibly responsive and helpful In diagnosing an issue with my GivEnergy inverter. Although distance meant it was impractical for me to use them to fully solve the issue, I’m grateful for the help and detail they provided. Don is a real professional gent and a hero in my eyes.
I sent a message on their website regarding a problem I have on my Givenergy system. Although not supplied by Ronald, I thought it was worth an email. Within the hour on a Saturday, he phoned and we discussed the problem. He logged in remotely and gave excellent advice. I'm too far away for his on-site help but he did diagnose the problem and was happy also to chat through my thoughts about an upcoming solar/battery install I'm planning. Great bloke.... if only he was nearer!
Solar Tech Support answered my initial enquiry swiftly. They provided remote support to establish what the issue was, and through their experience and network, managed to get my clients system back online. Once the system was online, STS managed to diagnose the main issue to get the ac coupled inverter and battery back online, a battery repair was required. A site visit was organise and within a few days, the system was tested and back up and running. This has saved my client, and probably myself huge costs and inconvenience now the system is back online and working correctly. Would highly recommend.
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.
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.
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.
A red light is a protection state, not an immediate danger — but two scenarios require immediate action before any investigation.
If you smell burning, see scorch marks, or hear arcing — stop immediately
Isolate the system at the consumer unit (turn off the solar / inverter breaker). Do not investigate further. Call a qualified engineer. Do not attempt to restart the system.
The GivEnergy inverter and battery are separate units, each with their own status light. The inverter is typically wall-mounted (garage, utility room, loft). The battery is a separate floor-standing or wall-mounted unit nearby. Identifying which has the red light is the most important first step — the causes and responses are completely different.
Is the light solid red, or is it flashing? If flashing — how many flashes, at what speed, is there a pause between sequences? Take a short video on your phone if possible. Different flash patterns indicate different fault types and this information is critical for diagnosis.
Log into givenergy.cloud → My Inverter → Event Log. The event log shows the exact fault codes that triggered the red light, with timestamps. The fault code is the single most valuable piece of information — it identifies the specific cause far more precisely than the light pattern alone. Take a screenshot.
According to the GivEnergy user manual, the status light system is the same on both the inverter and the battery pack. Understanding all colours helps confirm the red light is a fault rather than a normal operating state.
System operating normally. No action required.
Inverter only — waiting for available power to manage. Normal at night or during low-generation periods.
Lost communication — typically WiFi/portal offline or CAN bus issue. System may still be generating. See portal offline guide.
System has detected a fault and entered protection state. Check portal event log for specific fault code. Do not open enclosures.
The inverter status light is on the front panel of the wall-mounted inverter unit. A red light means the inverter has detected a fault and stopped generating. The portal event log will show the specific fault code — this is the fastest route to identifying the cause.
INV_NO_UTILITYNo AC supply detected. Check the AC isolator below the inverter is on and AC connections are tight.STORAGE_ERROR_NO_UTILITYSame as above on the storage variant. Check AC supply and isolator first.INV_PV_OVER_VOLTAGEString voltage from panels exceeds 580V DC. Do not touch any DC cabling. Requires an engineer to check panel string configuration.INV_GFCI_FAULTGround fault detected — DC voltage to earth. Do not touch DC cabling. Isolate at the consumer unit and call a qualified engineer immediately.STORAGE_ERROR_GFCI_FAULTSame ground fault on the storage variant. Same response: isolate and call an engineer.A small switch or isolator is typically mounted on the wall directly below the inverter. This must be in the ON position. If it has tripped, reset it. If it trips again immediately, do not force it — there is an underlying fault.
Check your consumer unit for any tripped RCDs or MCBs on the solar circuit (typically labelled PV, Solar, or Inverter). Reset if tripped. If it trips again, stop and contact an engineer.
If no breakers are tripped and the isolator is on, try a controlled restart: turn the AC isolator off, wait 60 seconds, turn it back on. Allow 5 minutes for the inverter to go through its startup sequence and reconnect to the grid. Check the portal after 10 minutes.
The GivEnergy battery has a status indicator on its front panel — the same three-colour system as the inverter: green (normal), yellow (communication issue), red (fault). The battery also has four SoC indicator LEDs showing 25%/50%/75%/100%. The GivEnergy user manual states explicitly: "If you see a red status light on the front panel, please contact your installer."
Battery restart procedure
The green or red handled switch between the two units. Move it to the DOWN / OFF position.
Press and hold the button on the side of the battery until all LEDs go out. Leave off for at least 60 seconds.
Press the side button to restart. Watch the status indicator — if it returns to green, the fault may have been a transient protection event that has now cleared. Then move the DC MCB back to ON. Wait 5–10 minutes and check the portal.
STORAGE_WARN_BMS_COM_FAILInverter lost communication with the battery BMS. See CAN fault guide.STORAGE_ERROR_BMS_COM_FAILFull BMS communication error — persistent comms loss.STORAGE_WARN_BMS_UNDER_VOLTAGEBattery at critically low voltage. Check battery is switched on and first SoC LED is green.STORAGE_ERROR_BAT_UNDER_VOLTAGE_FAULTBattery voltage below safe minimum threshold.STORAGE_WARN_BATTERY_SOC_LOWState of charge critically low.STORAGE_WARN_BMS_SHORT_CURRENT_DISCHARGERPolarity issue on DC battery cables. Do not touch any cabling — contact an engineer.STORAGE_ERROR_BACKUP_OVERLOAD_FAULTEPS load exceeds the inverter's power rating. Reduce the load connected to the backup circuit.STORAGE_WARN_BATTERY_VOLTAGE_LOWBattery voltage is low. Check the battery is switched on and the DC MCB is in the ON position.The GivEnergy battery front panel has two separate indicator systems. Understanding both helps interpret what the battery is telling you at the moment of a fault.
Note the number of SoC LEDs lit at the time of the fault — this is useful context for diagnosis, particularly for over-discharge scenarios.
Whether the restart cleared the light or not, the same next step applies: understand what caused it, and confirm it won't recur.
The fault was likely a transient protection event that has cleared. However, it will recur if the underlying cause isn't addressed. Check the portal event log for what code appeared, and investigate whether that condition could repeat — was it an over-discharge during a grid outage? A voltage spike? A momentary CAN loss?
If you cannot identify the cause from the event log, a remote diagnostic reviewing the full event history will establish whether this is a one-off or the start of a recurring pattern.
The fault is persistent. Do not keep restarting. The portal event log has the fault code — this is the starting point for the diagnostic. Share the specific code and the sequence of events leading up to it.
Depending on the fault code, this may be resolvable remotely (firmware mismatch, configuration issue) or may require a site visit (cable fault, hardware failure, BMS board replacement). A remote diagnostic confirms which before you commit to any physical work.
The red light tells us something is wrong. The event log tells us what. If you can share the specific fault code from your portal, we can often identify the cause and recommended fix without a diagnostic session.
BMS_COM_FAIL codes — causes and full fix guide.
Battery won't charge overnight — system mode and CT clamp causes.
Inverter tripping on sunny days — DNO evidence and fix.
Battery isolator tripping — cable termination faults and inverter short-circuit diagnosis.
Tell us which unit has the light, the fault code from the event log if you have it, and what happened leading up to it. We'll identify the cause and confirm whether it needs a site visit before you commit to anything.
I’ve worked on hundreds of GivEnergy systems and know the kit inside out. If yours is playing up, my promise is simple — no fix, no fee: just £95 if we fix it, free if we don’t.
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