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Fault guide · GivEnergy AIO & hybrid

GivEnergy Inverter Not Turning On — No Display, Won't Start

A blank display, a system that won't restart after a power cut, or an inverter that clicks and stops — none of these automatically mean the unit is dead. Most GivEnergy startup failures have a recoverable cause. This guide works through the checks in the right order, starting with the most common and safest to check yourself.
  • Isolator checks and battery restart covered
  • Deep discharge recovery explained
  • Firmware failure and fault codes included
Inverter completely dead or won't recover?

If you've checked all isolators, the battery has charge, and the system still won't start — the fault is likely hardware or a failed firmware flash. We diagnose remotely first to rule out recoverable faults, then scope an engineer visit only if hardware is confirmed faulty.

Book your free remote diagnosticCAN communication fault guide

Independent — not affiliated with GivEnergy Ltd.

5.0
13 Trustpilot reviews
Trustpilot Google

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.

Ian · May 2026 Trustpilot

When my GivEnergy system had an issue, I was completely left without support and had honestly lost all hope. Thankfully, I searched online and found Ron, which completely turned things around. After sending him a message, he responded incredibly fast and called me to assure me that he would get the problem fixed. I really admire his dedicated, supportive nature and his determination to find a solution. With this kind of outstanding attitude and customer service, he has absolutely secured a future customer in me.

Sree · May 2026 Trustpilot

Ron want out of is way to help, nothing was to much. He was very thorough in what he did Very knowledgeable I would highly recommend Ron and his company He did a fantastic job for me. if you have any problems, he'll do his best to help you out and resolve your problem. I wouldn't hesitate to recommend them

Dennis Brown · May 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

Contacted Ron with a problem and he sorted it out quickly with no problems at all. Very knowledgeable on anything solar/ batteries. I would recommend him to anyone

Phill · May 2026 Trustpilot

I've spoken to Ron a couple of times with issues with my Givenergy installation. Such a friendly knowledge guy very highly recommended. Thank you very much for resolving my issues

michael fairhurst · May 2026 Trustpilot

Contacted Solar Tech Support in desperation. After explaining the issues I had with my system a diagnosis was made and a solution proposed. Fantastic service, even contacted a manufacturer to arrange replacement parts for me. Great communications, explained all they were doing and what I had to do, clearly and precisly. Followed up to confirm all was ok. Excellent service.

Mr Machin · May 2026 Trustpilot

After GivEnergy went into liquidation, just my luck, my battery started playing up (internal board crashed). Contacted my installer - not interested! Found Solar tech support on a Google search. Sooo glad I found this company! Ron is extremely helpful and has plenty of experience. He soon confirmed what the fault was, and helped me to get my system up and running again. Now moved my GivEnergy account to Solar tech support, and will definitely use again if I have more issues. Unusual to find such a helpful company in these times, no morons reading scripts, just direct contact with the engineer.

Keith Ballard · Apr 2026 Trustpilot

Contacted Solar Tech Support when trying to understand what my Givenergy inverter problem might be and what might be my options. Received good/honest advise which backed up my thoughts.

Hugh Speirs · Apr 2026 Trustpilot

Ron is a super star. Two months ago my GivEnergy battery failed a firmware upgrade leaving it a brick. My installer couldn't/wouldn't fix it. GivEnergy couldn't/wouldn't fix it. Then they went into administration and all hope was lost. A flurry of emails later and Ron had diagnosed the fault (failed USB flash drive, something I'd suspected) and talked me through resolving it. Two months of nothing resolved in about 3 hours. It's great to work with someone who pays attention to the details, knows that they're doing (not just following a script) and gets stuff sorted without a fuss or up-charging.

Christopher · Apr 2026 Trustpilot

I can add to the list of customers who had already 'given up' on GivEnergy due to their appalling customer service, and that was before they went into administration (their Trustpilot reviews don't lie!). So you can imagine my desperation when, having changed my ISP and my Inverter, predictably, proving to be the only device that didn't connect automatically to my new network, I found zero prospect of any customer support with GivEnergy having called in the administrators just five days earlier! The salvation came from Solar Tech Support. My IT advisor stumbled across their web site and some very helpful tips for beleaguered GivEnergy customers, as well as an offer to provide direct assistance. Nothing ventured, I decided to drop them an E-Mail, with very low expectations based on my experience of GivEnergy customer support. Within an hour Ron had responded with some pin point advice, and after a few exchanges of E-Mails he had nailed the problem, enabling the combined efforts of my IT advisor and solar installer to resolve it and reconnect my Inverter. Thank you Solar Tech Support, and Ron in particular, for coming to the aid of a deserted and despondent GivEnergy customer. Expert, razor sharp advice and first class customer service, even though I wasn't officially a customer.

customer · Apr 2026 Trustpilot

This company are a rare gem, I had a very unusual problem following a failed firmware upgrade on my GivEnergy kit. I then found out GivEnergy were in administration and had dismissed all their support staff! None of the usual fixes to try and restore my inverter comms would work, and I looked everywhere, forums, GivEnergy youtube support videos - even AI couldn't figure it out. My installer was talking about huge sums for system replacements, and being vague / evasive about if they'd even install replacement GivEnergy inverter. Enter Solar Tech Support, reassuring and knowledgeable from the very start, I've learnt loads about my solar system though the friendly chat while my engineer worked as he diagnosed the problem and figured out a fix procedure that I've not found anywhere else - amazing . If you need solar system repairs - especially if you like me have been left high and dry by GivEnergy, I cannot recommend this company enough. Give them a call.

Andy Thomas · Apr 2026 Trustpilot

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!

Philip · Apr 2026 Trustpilot

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.

Ian · May 2026 Trustpilot

When my GivEnergy system had an issue, I was completely left without support and had honestly lost all hope. Thankfully, I searched online and found Ron, which completely turned things around. After sending him a message, he responded incredibly fast and called me to assure me that he would get the problem fixed. I really admire his dedicated, supportive nature and his determination to find a solution. With this kind of outstanding attitude and customer service, he has absolutely secured a future customer in me.

Sree · May 2026 Trustpilot

Ron want out of is way to help, nothing was to much. He was very thorough in what he did Very knowledgeable I would highly recommend Ron and his company He did a fantastic job for me. if you have any problems, he'll do his best to help you out and resolve your problem. I wouldn't hesitate to recommend them

Dennis Brown · May 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

Contacted Ron with a problem and he sorted it out quickly with no problems at all. Very knowledgeable on anything solar/ batteries. I would recommend him to anyone

Phill · May 2026 Trustpilot

I've spoken to Ron a couple of times with issues with my Givenergy installation. Such a friendly knowledge guy very highly recommended. Thank you very much for resolving my issues

michael fairhurst · May 2026 Trustpilot

Contacted Solar Tech Support in desperation. After explaining the issues I had with my system a diagnosis was made and a solution proposed. Fantastic service, even contacted a manufacturer to arrange replacement parts for me. Great communications, explained all they were doing and what I had to do, clearly and precisly. Followed up to confirm all was ok. Excellent service.

Mr Machin · May 2026 Trustpilot

After GivEnergy went into liquidation, just my luck, my battery started playing up (internal board crashed). Contacted my installer - not interested! Found Solar tech support on a Google search. Sooo glad I found this company! Ron is extremely helpful and has plenty of experience. He soon confirmed what the fault was, and helped me to get my system up and running again. Now moved my GivEnergy account to Solar tech support, and will definitely use again if I have more issues. Unusual to find such a helpful company in these times, no morons reading scripts, just direct contact with the engineer.

Keith Ballard · Apr 2026 Trustpilot

Contacted Solar Tech Support when trying to understand what my Givenergy inverter problem might be and what might be my options. Received good/honest advise which backed up my thoughts.

Hugh Speirs · Apr 2026 Trustpilot

Ron is a super star. Two months ago my GivEnergy battery failed a firmware upgrade leaving it a brick. My installer couldn't/wouldn't fix it. GivEnergy couldn't/wouldn't fix it. Then they went into administration and all hope was lost. A flurry of emails later and Ron had diagnosed the fault (failed USB flash drive, something I'd suspected) and talked me through resolving it. Two months of nothing resolved in about 3 hours. It's great to work with someone who pays attention to the details, knows that they're doing (not just following a script) and gets stuff sorted without a fuss or up-charging.

Christopher · Apr 2026 Trustpilot

I can add to the list of customers who had already 'given up' on GivEnergy due to their appalling customer service, and that was before they went into administration (their Trustpilot reviews don't lie!). So you can imagine my desperation when, having changed my ISP and my Inverter, predictably, proving to be the only device that didn't connect automatically to my new network, I found zero prospect of any customer support with GivEnergy having called in the administrators just five days earlier! The salvation came from Solar Tech Support. My IT advisor stumbled across their web site and some very helpful tips for beleaguered GivEnergy customers, as well as an offer to provide direct assistance. Nothing ventured, I decided to drop them an E-Mail, with very low expectations based on my experience of GivEnergy customer support. Within an hour Ron had responded with some pin point advice, and after a few exchanges of E-Mails he had nailed the problem, enabling the combined efforts of my IT advisor and solar installer to resolve it and reconnect my Inverter. Thank you Solar Tech Support, and Ron in particular, for coming to the aid of a deserted and despondent GivEnergy customer. Expert, razor sharp advice and first class customer service, even though I wasn't officially a customer.

customer · Apr 2026 Trustpilot

This company are a rare gem, I had a very unusual problem following a failed firmware upgrade on my GivEnergy kit. I then found out GivEnergy were in administration and had dismissed all their support staff! None of the usual fixes to try and restore my inverter comms would work, and I looked everywhere, forums, GivEnergy youtube support videos - even AI couldn't figure it out. My installer was talking about huge sums for system replacements, and being vague / evasive about if they'd even install replacement GivEnergy inverter. Enter Solar Tech Support, reassuring and knowledgeable from the very start, I've learnt loads about my solar system though the friendly chat while my engineer worked as he diagnosed the problem and figured out a fix procedure that I've not found anywhere else - amazing . If you need solar system repairs - especially if you like me have been left high and dry by GivEnergy, I cannot recommend this company enough. Give them a call.

Andy Thomas · Apr 2026 Trustpilot

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!

Philip · Apr 2026 Trustpilot
First checks
Start here

Safe checks before calling an engineer

Most GivEnergy startup failures are caused by one of three things: an isolator in the wrong position, a battery that needs restarting, or a battery that has deeply discharged. These are all safe to check yourself before escalating.

🔴
Check 1
AC isolator — ON?

The AC isolator (red or black rotary switch near the inverter) must be in the vertical/ON position. Also check the MCB labelled "Solar" or "Inverter" in your consumer unit — it must not be tripped. A tripped MCB is a common cause of complete system shutdown after a fault or surge.

Check 2
Battery isolator — UP?

The green battery isolator handle on the side of the battery cabinet must be in the UP position. If it is horizontal or pointing down, the battery is disconnected from the inverter. Lift it to the UP position, then press the battery restart button (hold for 3–5 seconds) if the battery LEDs are not illuminated.

🔋
Check 3
Battery charge — above 0%?

A GivEnergy battery that has discharged to 0% and sat empty for several days may enter deep discharge protection — a safety state where it will not start normally. If this has happened, the recovery path depends on whether solar generation is available. See the deep discharge section below.

Before touching any isolators: Only switch isolators that are in the OFF position back ON. Do not switch isolators that are currently ON to OFF and back on again unless you have confirmed there is no active fault. If a circuit breaker trips again immediately after resetting, stop — there is a wiring fault that requires a qualified electrician.

Startup sequence
Procedure

Correct GivEnergy restart sequence

If the system has been fully powered down, the restart sequence matters — energising components in the wrong order can cause grid detection errors or communication faults. The correct sequence differs between AIO and Hybrid systems.

AIO (All-in-One) restart
1Turn on the DC MCB (inside the DC cover on the AIO unit) — push up to ON, then close the cover
2Press and hold the small button to the right of the DC cover until the front status light appears
3Rotate the AC isolator from circle (off) to line (on) — vertical position
Hybrid / AC-Coupled restart
1Rotate the AC isolator from circle (off) to line (on)
2Push the battery DC MCB up to ON (inside the battery flap), close the cover
3Press and hold the battery button until you hear a beep and the LEDs illuminate
4Gen 3 only: flip the inverter toggle switch to ON

After restart: Wait 5–10 minutes before checking the app or portal. A blank display during the first 60–90 seconds is normal — do not interrupt. Battery LEDs should be green (operating normally). If all LEDs are red or no LEDs respond, the battery has a fault — see the fault diagnosis section below. The PV solar isolator should also be in the ON position for solar generation to begin.

Fault causes
Diagnosis

What causes a GivEnergy inverter to not start?

If the basic checks haven't resolved the issue, the cause falls into one of these categories. The display state is the most important diagnostic signal.

Completely blank display — no LEDs, no response

Power supply fault
Most likely causes
AC isolator or MCB off/tripped
Battery completely discharged (deep discharge)
Internal power supply failure (requires engineer)
Failed firmware flash leaving unit non-bootable
Action

Confirm all isolators are ON, the MCB hasn't tripped, and the battery has been restarted. If everything checks out and the display is still blank, this is an engineer job — do not attempt to open the unit.

Display shows fault code, system won't generate

Fault state
Most likely causes
Grid voltage or frequency out of range
DC isolation fault (F04) — safety shutdown
CAN bus communication error with battery
BMS alarm on battery unit
Action

Note the exact fault code from the display or portal and look it up in the GivEnergy fault code index. DC isolation faults (F04) indicate a potential wiring insulation fault and must not be reset without an inspection.

Clicking noise on startup — system doesn't progress

Grid detection issue
Most likely causes
Grid overvoltage (above 253V)
Loose or intermittent AC connection
Grid frequency out of range (rare in UK)
Relay chatter fault requiring engineer reset
Action

If accessible, check the grid voltage on the inverter display or portal. Persistent clicking at correct grid voltage indicates a relay or internal fault — contact STS for a remote diagnostic before booking an engineer visit.

Inverter starts but generates no power, no output

Configuration issue
Most likely causes
Battery paused in the app or portal
System mode set to "Off" or "Standby"
Export limit set to 0W (blocks all output)
Smart tariff lockout holding the system inactive
Action

Check the portal Remote Control page — confirm Pause Battery shows Not Paused, system mode is set to Normal, and the export limit is not 0W. If a smart tariff has control, see the smart tariff lockout guide.

After a power cut
Power cut recovery

GivEnergy not restarting after a grid outage

GivEnergy inverters are designed to restart automatically when grid supply is restored. When this doesn't happen, one of three conditions is usually preventing it.

AC isolator or MCB tripped during the outage

Power surges at the moment of grid restoration sometimes trip MCBs. Check the consumer unit — reset any tripped breakers. If the MCB trips again on reset, there is a wiring fault on that circuit that needs electrical inspection before the inverter is energised again.

Battery discharged to 0% during the outage

If the power cut was long and the battery ran down to 0%, the BMS enters deep discharge protection. The inverter cannot restart normally in this state. During daylight hours with solar available, the system may recover autonomously as the solar input charges the battery above the minimum recovery threshold (typically around 5%). At night with no solar, an engineer visit with specialist equipment may be needed to initiate a controlled recovery charge.

Grid frequency or voltage instability at restoration

Immediately after grid restoration, voltage and frequency can be briefly unstable as load reconnects across the network. GivEnergy inverters include a 5-minute settling delay before reconnecting to a restored grid (required by UK G98/G99 regulations). Wait 5–10 minutes after the grid is restored before concluding the inverter hasn't restarted. If the inverter still hasn't started 10 minutes after grid restoration, check the display for fault codes.

Fault codes
Fault codes

Fault codes that prevent GivEnergy from starting

If the inverter display or portal shows a code, match it to this table. Some codes are recoverable; others require an engineer.

Code Meaning Recoverable? Action
F01 Grid voltage out of range Often yes Check grid voltage. Persistent F01 above 253V — notify DNO
F04 DC isolation fault (insulation failure) Engineer required Do not reset. Potential wiring insulation issue — inspection required
F11 Bus voltage fault (DC bus) Sometimes Full restart sequence. Persistent F11 — engineer diagnostic
F13 Inverter overtemperature Yes — wait & cool Ensure ventilation around unit. Clears once temperature drops
E-series Communication errors (battery/dongle) Often yes Full restart. Check CAN cable connections if persistent
BMS alarm Battery management system fault Varies Retrieve specific alarm from portal. Do not force restart if red LED active

For the complete fault code reference including all F-codes, E-codes, and BMS alarm numbers, see the GivEnergy fault code index. If you can see a code but it isn't in the table above, look it up there for the specific recovery path.

When to escalate
Escalate

When to call STS — beyond the self-help steps

The diagnostic steps above resolve a large proportion of GivEnergy startup failures — isolator positions, deep discharge recovery, startup sequence, and fault code identification. If you have worked through all the steps and the inverter still won't start, or if a fault code persists after a controlled restart, the root cause is likely a hardware failure that requires a professional assessment.

Call STS immediately — safety-critical faults

F04 isolation fault — do not attempt to restart. Indicates a DC wiring fault that requires inspection
Burning smell, visible scorch marks, or evidence of arcing — isolate at consumer unit immediately
MCB trips immediately on reset — indicates a fault on the AC wiring side, do not re-energise
Battery enclosure is hot to the touch, swollen, or smells unusual — do not attempt to restart

Call STS after exhausting self-help steps

Display completely blank after confirming all isolators on and battery has charge
Failed firmware update — inverter in non-bootable state, blank or frozen display
F11 (bus voltage fault) or persistent BMS alarm code that doesn't clear after restart
Battery deeply discharged with no solar available — recovery requires controlled charge procedure
Inverter powers on but produces no output and no fault code is shown
Remote diagnostic — we assess before sending an engineer

A remote session establishes whether the fault is recoverable without a site visit — retrieving portal event logs, fault history, and last-known system state. We confirm whether hardware failure has occurred before committing to an engineer visit. Most GivEnergy startup faults are diagnosed in a single remote session — from £75.

Book remote diagnostic
Inverter not turning on — all brands
Remote Diagnostic

Can't get it started? Let's diagnose it properly.

If you've worked through the isolator checks and battery restart and the system still won't start, the fault is likely hardware, firmware, or a deep discharge recovery situation. We run a remote diagnostic first — accessing portal data and fault history — before recommending an engineer visit. This prevents unnecessary call-outs when the fault can be resolved remotely.

Portal fault history and alarm codes reviewed
Firmware failure vs hardware fault identified
Engineer visit only scoped if remote confirms hardware fault
from £75

Remote diagnostic. If an engineer visit is needed, the diagnostic fee is credited against the visit cost.

Book Remote Diagnostic

Independent — not affiliated with GivEnergy Ltd.

FAQ

GivEnergy inverter not turning on — questions

Not necessarily. A blank display most commonly means a power supply issue rather than a failed inverter. Check the AC isolator (must be ON), the MCB in the consumer unit (must not be tripped), the battery isolator handle (must be UP/ON), and whether the battery has any charge. If all isolators are correct and the battery has charge but the display is blank, it may be a firmware failure or internal power supply fault — this requires an engineer visit.
First wait 5–10 minutes — GivEnergy inverters have a mandatory grid reconnection delay after supply is restored. If still not started after 10 minutes: confirm the AC isolator is ON and the MCB hasn't tripped, check whether the battery discharged to 0% during the outage, and press the battery restart button if the battery LEDs are off. If the battery is at 0% with no solar available, recovery may require a controlled charge — contact STS for a remote diagnostic.
A red light indicates the battery is in a fault or protection state — BMS communication fault, overtemperature protection (below 0°C), cell voltage imbalance, or deep discharge protection. Do not attempt to open the battery. Press the battery button to attempt a restart. If the red light persists, retrieve the specific alarm code from the portal to identify whether it is recoverable or requires replacement.
Yes. A firmware update interrupted by a power cut, internet dropout, or corrupted download can leave the inverter in a non-bootable state with a blank or frozen display. Recovery from a failed firmware flash requires either a factory recovery via a USB tool (carried out by an engineer) or in severe cases, board replacement. Do not attempt to restart the update if the inverter is in this state — contact STS or GivEnergy support immediately.
No — do not attempt to reset an F04 fault. F04 is a DC isolation fault, meaning the inverter has detected that the insulation resistance between the PV DC circuit and earth has fallen below a safe threshold. This is a safety fault indicating a potential insulation failure in the DC wiring — typically a damaged cable, a faulty panel junction box, or water ingress into a connector. The system must remain offline until a qualified electrician inspects the DC cabling. Resetting without inspection carries a real risk of electric shock or fire.
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Inverter still won't start? Let us investigate.

If you've worked through the isolator checks and battery restart and the system still won't power up, we can review your fault codes and DC isolator status remotely to diagnose whether it's a firmware issue, hardware fault, or deep discharge recovery situation.

  • Not affiliated with GivEnergy Ltd
  • Free remote diagnostic · no fix, no fee
  • Fault code and DC isolator review

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