GivEnergy WiFi Dongle Setup — AECC & HF21 Configuration Guide
- AECC dongle — All-in-One 2, Gateway 2, Gen 4
- HF21/HFA21 — T27 chipset update
- Router compatibility and port requirements
Persistent connectivity issues often involve router firewall rules, IP conflicts, or firmware versions interacting in ways that aren't obvious. We resolve GivEnergy connectivity problems remotely in most cases.
Book your free remote diagnosticPortal offline guideNot affiliated with GivEnergy Ltd. Independent diagnosis and support.
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.
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.
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
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)
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
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
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.
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.
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.
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.
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.
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.
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!
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.
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.
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
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)
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
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
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.
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.
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.
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.
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.
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.
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!
Which dongle does your GivEnergy system use?
GivEnergy systems use different connectivity hardware depending on the inverter generation. Confirm which dongle type you have before following any setup steps — the interface, login credentials, and configuration process are different for each.
AECC Multi-Connect Dongle
Used on: All-in-One 2, Gateway 2, Gen 4 inverters. Supports LAN (Ethernet), WiFi, Bluetooth (commissioning only), and 4G fallback. Larger unit — typically labelled AECC on the casing.
HF21 / HFA21 WiFi Dongle
Used on: Gen 1, Gen 2, early Gen 3 hybrid inverters. WiFi-only — no Ethernet port. Small dongle plugged into the inverter's data port. If it fails to connect to modern routers, a chipset update to T27 resolves most cases.
AECC dongle — first-time WiFi setup
The AECC dongle is configured via a local web interface. You connect to its own WiFi hotspot first, then configure your home WiFi credentials through a browser. Once saved, the dongle switches to your home network and connects to the GivEnergy portal automatically.
Setup procedure
Power on the inverter. The AECC dongle broadcasts a WiFi hotspot — look for a network name like WN2535G070 (the exact name varies). Connect to it from your phone or laptop. There is no password on first use. If it appears password-protected, hold the reset button for 10 seconds to factory reset.
Open a browser and navigate to https://10.10.100.254/web/info. Accept any certificate security warning — this is expected (the dongle uses a self-signed certificate). Log in with username admin, password 123456. You will be prompted to create a new password — use a mix of letters and numbers (e.g. admin123456).
Select STA Settings from the navigation menu. Press Choose to scan for nearby WiFi networks. Select your home SSID from the list. Enter the password exactly as it is — it is case-sensitive and symbols must match precisely. Set Authentication Mode to WPA2-PSK (most common) or WPA3 for newer routers. Leave all other settings at default. Press Save.
Return to the System page. Press Refresh after 20–30 seconds. Under the STA section you should see your router's SSID, a signal strength percentage, and an assigned IP address (e.g. 192.168.1.xxx). If the SSID shows but there's no IP address, the password was entered incorrectly — go back to STA Settings and re-enter it. If nothing shows, the dongle hasn't reconnected yet — wait another 30 seconds and refresh again.
Select AP Settings. Set AuthMode to WPA2-PSK and create a strong password for the dongle's own local hotspot. Do not skip this step — an unsecured access point is visible to any WiFi device within range and is a security risk. Save settings.
Online within 5–10 minutes: Once the dongle has an IP address, your inverter should appear online in the GivEnergy portal (givenergy.cloud) within 5–10 minutes. If it remains offline after 15 minutes, check that your router is not blocking outbound traffic on ports 7654 and 7655 — see the router configuration section below.
Detailed AECC dongle reference: all settings pages, STA vs AP configuration, Bluetooth commissioning, 4G fallback, and reset procedures for each inverter model.
Read the AECC dongle guide →HF21/HFA21 dongle — chipset update to T27
If your Gen 1 or Gen 2 system had stable WiFi and then connectivity problems started after a router upgrade, the HF21/HFA21 chipset is almost certainly the cause. Older chipset versions (T25, T22) struggle with WPA3, beamforming, and 802.11ax features on modern routers. Updating to chipset T27 and bootloader 1.1.4 resolves the vast majority of these issues.
Requires a laptop — not a phone. The firmware upload requires a desktop browser with file upload capability. Mobile browsers cannot complete this reliably. If using an external standalone dongle, power it from a USB supply during the update. If the dongle is inside the inverter, turn DIP switches 2 and 3 to OFF before starting (reduces data traffic load during the update) — turn them back ON after completing.
Chipset update procedure
From your laptop, scan for WiFi networks. Look for a name like WE2300G100 or WJ2300G100. Connect to it. If it's password-protected, hold the reset button for 10 seconds to clear it first.
Open a browser and go to http://10.10.100.254 (HTTP, not HTTPS). Log in with username admin and password admin.
Select Device Management. Note the chipset version shown. If it already shows T27 or higher, no update is needed — your issue is likely router-side. If it shows T25, T22, or anything below T27, proceed with the update.
Navigate to http://10.10.100.254/EN/uboot.html. You'll need the T27 chipset update file and the 1.1.4 bootloader file — download these from GivEnergy's firmware downloads page. Upload the T27 chipset file first. Click Apply. The dongle will reboot — wait until the hotspot reappears, then reconnect.
After the dongle reboots and you've reconnected, log in again and navigate back to /EN/uboot.html. Upload the 1.1.4 bootloader file. Click Apply. Wait for the dongle to reboot again.
After the second reboot, log in to Device Management and confirm the chipset now shows T27. Then go to STA Settings and reconnect the dongle to your home WiFi network. Turn DIP switches 2 and 3 back to ON if you turned them off earlier.
After the T27 update: The dongle should maintain stable WiFi on modern routers. If issues continue, check that your router is broadcasting a 2.4GHz SSID, set channel width to 20 MHz, and ensure port 7654/7655 are not blocked. See the full dongle firmware guide for more detail on the update process.
Complete reference for T27 chipset and bootloader 1.1.4 update — DIP switch positions, file order, error recovery, and verification.
Read the dongle firmware guide →Router settings that affect GivEnergy connectivity
Most persistent dongle connection problems trace back to router settings rather than the dongle hardware. Check these before assuming the dongle is faulty.
AECC connection priority — LAN, WiFi, and 4G
The AECC dongle supports three connection types with a defined priority order. Understanding this helps you choose the right option for your installation.
Always used when a cable is plugged in. Eliminates all WiFi variables — signal strength, channel interference, router compatibility. Most stable option for long-term reliability.
Best choice if cable routing is practicalUsed when LAN is unavailable. Requires 2.4GHz access. Good for most installations once router settings are correctly configured. Supports WPA2-PSK and WPA3.
Reliable for most homesFallback used by GivEnergy for remote diagnostics when home internet is down. Not intended for daily operation — do not rely on 4G as primary connectivity.
Backup only — not for routine useDongle still not connecting — step-by-step checklist
If you've followed the setup steps and the dongle still won't connect or stay connected, work through this diagnostic sequence.
Create a WiFi hotspot on your phone and connect the dongle to it (2.4GHz, WPA2, simple name and password). If the dongle connects via phone hotspot but not via home WiFi, the problem is definitively your router configuration — not the dongle hardware. This rules out hardware failure immediately and points you to the router settings above.
Stand at the inverter with your phone and scan for WiFi networks. Can you see a 2.4GHz SSID from your router? If you only see 5GHz, log into your router admin interface and enable the 2.4GHz band. Virgin Media Hub 3/4 and BT Smart Hub 2 can suppress 2.4GHz on some firmware versions. RSSI (signal strength) should be at least 60%.
If the dongle's System page shows a valid IP address but givenergy.cloud still shows the inverter offline, the dongle is connected to your router but can't reach GivEnergy's servers. Create outbound allow rules for ports 7654 and 7655 in your router's firewall settings. Some ISP-managed routers (TalkTalk, BT, Sky) block unusual outbound ports by default.
If you have a Gen 1 or Gen 2 system and connectivity problems started after a router upgrade or ISP equipment change, the HF21 chipset is almost certainly the issue. Follow the T27 update procedure in the section above — this resolves the vast majority of modern router compatibility failures on older GivEnergy systems.
If your portal was working and went offline (rather than never working), the problem is more likely to be the dongle losing connection after a router firmware update, DHCP lease expiry, or IP address conflict. See the GivEnergy portal offline diagnostic guide for that specific scenario.
Full AECC dongle reference — all settings pages, STA/AP config, reset procedures by model.
HF21 T27 chipset and bootloader 1.1.4 update — DIP switches, file order, verification.
Diagnose why the GivEnergy portal shows offline — dongle, router, and server causes.
GivTCP, Modbus, and Home Assistant integration for local data access without cloud dependency.
GivEnergy WiFi dongle questions
Dongle still not coming online?
Persistent connectivity issues often involve router firewall rules, IP conflicts, and firmware versions interacting in unexpected ways. Tell us what you're seeing and we'll identify the cause — usually without a site visit.
- Not affiliated with GivEnergy Ltd
- Free remote diagnostic — pay only if we fix it
- Most GivEnergy connectivity issues resolved remotely
Got a solar fault or need a quick answer? Drop us a message — we usually reply within a few minutes. Mon–Fri, 9am–7pm.