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Problem diagnosis · SolarEdge

SolarEdge red light — what it means and how to diagnose it

Your SolarEdge inverter is showing a red light on the LED panel and you're not sure what it means. Is it dangerous? Can you restart it? We walk through LED patterns, fault codes, and safe troubleshooting — including the critical difference between a grid fault and an arc fault.
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Red light on your SolarEdge?

Solid or flashing, we help you read the fault code and identify the cause. Share your SetApp alert or monitoring portal screenshot.

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Safety: If you see AFCI (arc fault) in SetApp, do NOT restart. Isolate DC and AC switches and contact an engineer.

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
⚠️

Safety: If SetApp shows "Arc Fault Detected" (AFCI), do NOT restart the system repeatedly. AFCI is a safety protection indicating a potential dangerous condition. Isolate the DC and AC switches and contact a qualified engineer immediately.

Diagnostics

5-step guide to SolarEdge red light diagnosis

Work through these steps in order. The fault code from SetApp or the monitoring portal is your key to understanding the exact issue.

1

Observe the LED pattern — solid or flashing?

Look at the red light on the inverter's LED panel. Is it:

Solid Red

The inverter has a persistent fault and has stopped producing. This requires investigation or intervention.

Flashing Red

The inverter has a transient fault and is attempting recovery. Often clears automatically in 5–10 minutes.

In both cases, immediately open SetApp or the monitoring portal to find the exact fault code — this will tell you the cause.

2

Check SetApp or monitoring portal for the fault code

Open SetApp (via Bluetooth) or the online monitoring portal (monitoring.solaredge.com). Look for the Alerts, Status, or Error Code section. Write down the exact code. Common red-light codes are:

G70–G99 = Grid voltage or frequency fault
P700, P701 = Arc fault detection (AFCI)
Isolation fault = DC isolation or grounding issue
AC overcurrent = Excessive AC current
P404, P401 = Optimiser communication or output issue

Note: If no fault code appears in SetApp but the LED is red, try closing and reopening the app, or refreshing the monitoring portal.

3

Identify which LED is red — DC, communication, or AC/grid?

SolarEdge inverters have three LEDs: DC (usually leftmost), Communication (middle), and AC/Grid (usually rightmost). Each turns red when that system has a fault. Look at the inverter panel and note which LED is red:

Red DC LED: DC power issue — DC isolator off, blown fuse, or wiring fault. Check DC input voltage in monitoring.
Red Comm LED: Communication or DC issue — optimiser fault, communication loss, or grounding issue. Check SetApp for P404, P700.
Red AC/Grid LED: Grid fault — voltage over/under limit, frequency issue, or isolation fault. Check monitoring for grid voltage and frequency readings.
4

For grid faults (flashing red, G-codes) — wait and monitor

If the monitoring portal shows a grid voltage or frequency code (G70–G99) and the red light is flashing, this is usually a brief grid quality issue. The inverter is designed to disconnect if grid voltage goes outside safe limits (typically 207–253V for single-phase UK) — this is a safety feature. Here's what to do:

1. Wait 5–10 minutes — The inverter will automatically retry connection once grid voltage normalises.
2. Check the monitoring portal — Does the grid voltage reading now show 230V (or your normal supply voltage)? Is the red light gone?
3. If it clears — The fault was transient and has self-resolved. No action needed.
4. If it persists — The grid voltage is consistently outside limits. This may indicate a local grid infrastructure issue or a problem with your inverter's grid connection. Contact your installer or DNO (Distribution Network Operator).

Do NOT restart the inverter repeatedly if you see a grid fault code — wait for it to recover naturally.

5

For AFCI faults (arc fault) — DO NOT restart — ISOLATE IMMEDIATELY

If SetApp or the portal shows "Arc Fault Detected" or P700/P701, this is a safety event, not an arbitrary trip. Arc fault detection (AFCI) means the inverter detected abnormal current patterns on the DC side — typically a damaged cable, corroded connector, or failed optimiser. Do not attempt to restart or reset the system.

1. Immediately switch off the DC isolator — This is the most important safety step.
2. Switch off the AC isolator — Isolate both sides of the system.
3. Contact a qualified solar engineer — Do not restart, do not investigate the DC wiring yourself.
4. Do not open the inverter enclosure — High voltage hazard. Let the engineer investigate.

AFCI faults require on-site investigation to identify the underlying wiring or component issue. Repeated resets without fixing the cause can lead to further damage or safety risks.

How SolarEdge LED status works

SolarEdge inverters use three LED indicators on the front panel, each representing a different system: DC power, internal communication, and AC grid connection. When operating normally, all three are green. A red light on any of these indicates a fault in that system. The monitoring portal or SetApp provides the specific fault code — the LED colour and pattern narrow the category, but the code tells you the exact problem.

The key distinction is between transient faults (flashing red) and persistent faults (solid red). Flashing red usually means the inverter is attempting recovery — most often from a brief grid quality dip. Solid red means the fault is persistent and the inverter has stopped producing. A solid red light that doesn't clear within 10–15 minutes requires investigation.

Arc Fault Circuit Interrupter (AFCI) is a critical safety feature. Unlike other fault codes, arc faults should never be ignored or reset repeatedly. AFCI detection means the inverter has identified abnormal current patterns consistent with an arc in the DC wiring — a serious electrical hazard. The system stops producing to prevent further damage. Investigation and repair by a qualified engineer is mandatory.

Back to

Return to the SolarEdge brand hub to explore other common faults and services.

SolarEdge support hub
FAQ

SolarEdge red light questions

First, determine if the red light is solid or flashing. Solid = persistent fault, the inverter has stopped producing. Flashing = transient fault, inverter is attempting recovery. Immediately open SetApp or the monitoring portal to read the fault code. The code tells you the exact cause. If you see "Arc Fault" (AFCI), isolate the DC and AC switches immediately — do not restart.
It depends on the cause. A red light from a grid fault (over/under voltage) is safe — the inverter is protecting itself. A red light from an arc fault (AFCI detection) IS potentially dangerous — it indicates abnormal current patterns suggesting a possible arc in the DC wiring. Arc faults require immediate isolation and engineer investigation.
No. AFCI is a safety protection indicating a potential dangerous condition. Do not reset repeatedly without identifying the cause. Isolate the DC and AC switches immediately and contact a qualified engineer. Repeated resets without addressing the underlying issue can cause further damage and increase safety risks.
Solid red = the inverter has a persistent fault and has stopped producing. Flashing red = the inverter has detected a transient fault (usually a brief grid quality issue) and is attempting to recover automatically. Flashing red often clears on its own within 5–10 minutes when the condition normalises. Solid red usually requires intervention or investigation.
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