The red light tells you there's a fault. The event log tells you what it is. We review your event log remotely, find the fault and its cause, and tell you whether this is a settings fix, a restart, or something that needs a site visit.
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We reached out to Solar Technical Support after our solar energy system stopped working. As GivEnergy 'solar orphans,' we have been extremely pleased with the service from STS - our system was back up and working within a day of us contacting them. We found other solar engineers reluctant or unable to help us, so it has been great to find this organisation. We would definitely use them again and would recommend them to anyone, especially GivEnergy orphans!
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!
Ronald was able to organise a brilliant electrician with extensive experience of GivEnergy systems local to me in the SW. I have now got a fully functioning system and suspect that my electricity bill will be substantially reduced or in credit over a year. Also when said electrician discovered an overvoltage in the my local grid, Ronald prepared a very lucid and comprehensive report of the situation which I have now supplied to my local grid. Cannot recommend Ron and Dan enough.
Having had a recent solar instal and being concerned about various aspects of the work, I reached out to Solar Tech for advice. I received immediate engagement and first class advice. This was late evening and the company went above and beyond in providing assistance to me - high recommended.
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.
Ron was Absolute God send . After 6 months of nightmares with the installer who messed up in every single aspect of the install... Ron came investigate and provide me with a detailed report and standing behind his words for my case His knowledge and understanding are simply exceptional. I can not express how happy I am to have the luck to deal with him
A red light means the system has protected itself. It is not an immediate danger, but one situation needs action before anything else.
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. Find out which unit has the red light first, because the causes and the right response are different for each.
Solid red on the battery is a fault that needs investigating. Flashing red on a Gen 1 or Gen 2 battery means a very low state of charge. Red and green flashing together means a firmware update is running, so leave it alone and do not switch anything off. GivEnergy lights do not use flash counts or speeds to signal different faults, so there is no need to count flashes or film them. Note the colour, then check the event log.
In the GivEnergy app, open your device and go to Event History. On the portal, log in to givenergy.cloud → My Inverter → Event Log. The event log names the fault that triggered the light and the time it started. It is the most useful thing you can give an engineer. Take a screenshot.
The battery and the inverter each have their own status light. This is what each colour means, based on GivEnergy's manuals and what we see on real systems. Knowing them all helps you tell a fault from a normal state.
On the battery, a solid green status light means it is working normally. No action needed.
On the inverter, flashing green means waiting mode: there is no power to manage yet. Normal at night or on very dull days.
On the battery, amber or yellow usually means the BMS is not communicating with the inverter. It is not a WiFi or portal problem. See our BMS Comm Fail guide.
Solid red means a fault that needs investigating. On Gen 1 and Gen 2 batteries, flashing red is different: it means a very low state of charge, not a fault. Check the event log. Do not open the unit.
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 the inverter limit: 580 V DC on Gen 1, Gen 2 and the Gen 3 3.6/5.0; 600 V DC on the Gen 3 8.0 and the string/AIO MPPT class. 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, do one full restart: the battery goes off first and the DC MCB last, then the AC comes back on first. Follow the full sequence for a Hybrid or an AIO. Allow 5 to 10 minutes for the inverter to start up and reconnect, then check the portal.
The GivEnergy battery has a status light on its front panel. Solid green is normal. Amber or yellow usually means the BMS is not talking to the inverter. Solid red is a fault that needs investigating. On Gen 1 and Gen 2 packs, flashing red means a very low state of charge rather than a fault. The battery also has four SoC LEDs showing roughly 25%, 50%, 75% and 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 battery goes off and back on at its own button, and no isolator moves. Follow the battery-only restart steps for a Hybrid or an AIO. Watch the status indicator: if it returns to green, the fault may have been a transient protection event that has now cleared. Wait 5–10 minutes and check the portal.
The battery goes off first and the DC MCB last, then the AC comes back on first. Follow the full sequence for a Hybrid or an AIO.
STORAGE_WARN_BMS_COM_FAILInverter lost communication with the battery BMS. See the BMS Comm Fail guide.STORAGE_ERROR_BMS_COM_FAILBMS communication error: the comms loss has not cleared.STORAGE_WARN_BMS_UNDER_VOLTAGEBattery at critically low voltage. Check the battery is switched on. A flashing first SoC LED means the charge is low.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 indicators: one status light and a row of four SoC LEDs. Reading both tells you what the battery was doing when the fault started.
Note how many SoC LEDs are lit, and whether the first one is flashing, when the fault appears. It helps the diagnosis, especially after an over-discharge.
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 probably a short protection event that has now cleared. It will come back if the cause is still there. Check the event log for the fault that was logged and ask whether it could happen again, for example an over-discharge during a power cut, or a voltage spike.
If the event log does not make the cause clear, a remote diagnostic of the full event history will show whether this is a one-off or the start of a pattern.
The fault has not cleared. Do not keep restarting. The event log names the fault, and that is where the diagnosis starts. Share it with us, along with what happened just before the light came on.
Depending on the fault, it may be fixable remotely (a configuration issue), it may be a firmware mismatch (we update it on a callout, or talk you or your electrician through it remotely), or it may need 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 fault from your event log, we can often identify the cause and the fix without a diagnostic session.
Battery not talking to the inverter: causes and fixes.
See BMS Comm Fail →Battery won't charge overnight — Timed Charge window and CT clamp causes.
See battery not charging →Inverter tripping on sunny days — DNO evidence and fix.
See grid overvoltage →Battery isolator tripping — cable termination faults, breakers failing early and inverter short-circuit diagnosis.
See DC MCB tripping →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 £125 if we fix it, free if we don’t.
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