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Diagnostic guide · Fox ESS

Fox ESS Fox Cloud offline — WiFi dongle reconnection

H1 inverter dropped off Fox Cloud? The WiFi dongle has almost certainly lost its connection to your home network — usually after a router change, password update, or ISP equipment swap. This guide walks through checking the dongle LED, reconnecting via AP mode, and fixing weak signal issues.
  • H1 and H1-G2 all models
  • Free remote-first diagnostic · no fix, no fee
  • Not affiliated with Fox ESS
Fox Cloud showing offline?

Tell us what the WiFi dongle LED is doing and whether your router has recently changed. We reconnect Fox ESS monitoring remotely in a single session.

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Independent — not affiliated with Fox ESS.

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 Warning

Do not open your inverter or interfere with DC cabling. Solar panels produce live DC voltage whenever exposed to light. Always use your DC isolator switch and contact a qualified solar engineer for hands-on fault diagnosis.

ℹ️
Before you start: check the small WiFi dongle plugged into your H1 inverter. Note whether the LED is flashing slowly, flashing rapidly, solid, or off entirely. Also check whether your home router or WiFi password has changed recently — this is the cause in the majority of cases.
Diagnosis

Step-by-step Fox Cloud reconnection

Work through these steps in order. Most Fox Cloud offline issues are resolved by step 3 or 4 — the router has changed and the dongle needs reconnecting.

1
Check whether Fox Cloud itself is down

Before troubleshooting your own system, check whether the Fox Cloud platform is experiencing an outage. Try logging in at foxesscloud.com from a desktop browser. If the portal loads but shows your inverter offline, the issue is local to your system. If the portal itself is down or very slow, the problem is server-side and will resolve without any action on your part.

2
Check the WiFi dongle LED on the inverter

Look at the WiFi dongle plugged into the bottom or side of your H1 inverter. Slow flash (once every two seconds) means the dongle is connected to your router and communicating normally — the issue may be a temporary Fox Cloud delay. Rapid flash or solid red means the dongle has lost its WiFi connection and needs reconnecting. No light at all means the dongle has no power — check it is fully seated in the port and the collar is tight.

3
Verify your router and WiFi have not changed

The most common reason for Fox Cloud going offline is a change to the home network. This includes a new router from your ISP, a changed WiFi password, a firmware update that reset the network name, or a switch from 2.4GHz to 5GHz only. The Fox ESS WiFi dongle only supports 2.4GHz networks. If your router is broadcasting 5GHz only, the dongle cannot connect. Check your router settings and ensure a 2.4GHz network is available.

4
Reconnect the dongle via AP mode

On your phone, go to WiFi settings and connect to the dongle's access point — the SSID is W-XXXXXXX (where X is the dongle serial number) and the password is mtmt2020. Your phone may warn there is no internet — connect anyway. Open a browser and go to 192.168.1.1. If asked for a login password, enter 12345678. Select your home WiFi network from the dropdown, enter the password, and press Save. The dongle will reboot and the LED should begin flashing slowly within a few minutes.

5
Power cycle the WiFi dongle

If the dongle's access point (W-XXXXXXX) does not appear in your phone's WiFi list, power cycle it. Unscrew the collar at the top of the dongle, pull it downwards to remove it from the inverter port, wait 30 seconds, then plug it back in firmly and retighten the collar. The dongle should now broadcast its access point for reconnection. If it still does not appear after power cycling, the dongle itself may have a hardware fault.

6
Check signal strength and consider a range extender

If the dongle connects but drops offline repeatedly, the WiFi signal at the inverter location is likely too weak. Most inverters are in garages, lofts, or utility rooms with poor WiFi coverage. A 2.4GHz WiFi range extender placed between the router and the inverter will usually fix recurring dropouts. A powerline adapter with WiFi is another option if the inverter is far from the router. If the dongle still disconnects after improving signal strength, contact STS for a remote diagnostic.

Fox Cloud offline — what you need to know

Fox Cloud is the monitoring platform for all Fox ESS inverter and battery systems. It relies on a small WiFi dongle plugged into the inverter to send generation, consumption, and battery data to the cloud. When that dongle loses its WiFi connection, the inverter keeps working normally but stops reporting data — the app shows the system as offline even though it is still generating and exporting. No data is lost permanently; once the connection is restored, historical data backfills automatically.

The dongle only supports 2.4GHz WiFi, which is the single most important thing to check. Many modern routers default to 5GHz or use band steering that can deprioritise 2.4GHz devices. After a router change or ISP equipment upgrade, the dongle needs to be manually reconnected via its built-in access point (AP mode). STS can walk you through this process remotely, or diagnose deeper connectivity issues using Fox Cloud installer-level access if the standard reconnection steps do not resolve the problem. We are independent from Fox ESS and from your original installer.

FAQ

Fox Cloud connectivity — common questions

The most common cause is the WiFi dongle losing its connection to your home network. This usually happens after a router change, a WiFi password update, or an ISP equipment upgrade. Check the LED on the WiFi dongle — a rapid flash or no light means it is disconnected. You will need to reconnect it via the dongle's built-in access point at 192.168.1.1.
Connect your phone to the dongle's WiFi access point (SSID: W-XXXXXXX, password: mtmt2020). Open a browser and go to 192.168.1.1 — if prompted for a password, enter 12345678. Select your new home WiFi network from the dropdown, enter the password, and press Save. The dongle will reboot and should reconnect to Fox Cloud within a few minutes. If you're unsure, book a remote diagnostic and we'll walk you through it.
A slow flash (once every two seconds) means the dongle is connected to WiFi and communicating with Fox Cloud normally. A rapid flash or solid red light means the dongle has lost its WiFi connection and needs to be reconnected via AP mode. No light at all means the dongle has no power — check it is fully seated in the inverter port and the collar is tightened securely.
No. The Fox ESS WiFi dongle only supports 2.4GHz networks. If your router is set to 5GHz only, or the 2.4GHz band has been disabled, the dongle will not connect. Most dual-band routers broadcast both frequencies by default, but some ISP router updates can disable 2.4GHz. Check your router settings and ensure a 2.4GHz network is available and broadcasting.
Intermittent disconnections are almost always caused by weak WiFi signal at the inverter location. Inverters are typically in garages, lofts, or utility rooms with poor coverage. A 2.4GHz WiFi range extender or powerline adapter placed between the router and inverter will usually fix recurring dropouts. Also check that your router is not set to change WiFi channels automatically, as channel hopping can cause brief disconnections.
Book

Fox Cloud still offline?

Tell us what the WiFi dongle LED is doing, whether your router has changed, and what you see in the Fox Cloud app. We diagnose Fox ESS connectivity issues remotely using installer-level portal access. Independent from Fox ESS and your installer.

  • Not affiliated with Fox ESS
  • Free remote diagnostic · no fix, no fee
  • On-site visits available across the UK

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