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Connectivity fault · All brands

Solar inverter not connecting to WiFi

Your inverter or battery is refusing to join your home network — or drops off it repeatedly. This is almost always one of four things: wrong WiFi band, changed router credentials, weak signal, or the device stuck in setup mode.
  • Affects all solar brands
  • Usually solvable without an engineer
  • System still generates without WiFi
Checked everything below and still stuck?

Some WiFi faults need deeper diagnosis — particularly if the dongle hardware has failed or the inverter firmware has an issue. A remote session can confirm the cause.

Book your free remote diagnosticWhat's included

Note: WiFi issues don't stop your system generating. Your panels and battery are still working — you just can't see the data.

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

The four most common causes

Check these first before going further.

📶
5GHz network

Solar inverters only support 2.4GHz. If your router uses a combined band or 5GHz-only network, the inverter won't connect or will drop repeatedly.

🔄
Router replaced / password changed

The inverter has your old credentials stored. After any router change you must run the WiFi setup process again with the new details.

📡
Weak signal

If the inverter is in a utility room, garage, or outbuilding, the signal may be too weak for a stable connection. A WiFi extender near the inverter often solves this.

🔵
Stuck in AP mode

The inverter or dongle is broadcasting its own hotspot, waiting to be configured. Check your phone's WiFi list for an SSID matching your inverter brand.

How to diagnose and fix it

Work through these in order. Each step either resolves the issue or narrows down what's causing it.

1
Check your router broadcasts a 2.4GHz network

Solar inverters use 2.4GHz WiFi only — they cannot connect to 5GHz. Many modern routers broadcast a combined network that merges both bands under one SSID. The inverter may connect briefly then drop as the router tries to move it to 5GHz.

Log into your router admin page and check the wireless settings. If there is no separate 2.4GHz SSID, create one — this is usually a setting called "band steering" or "smart connect" that you can disable to separate the bands.

2
Check signal strength at the inverter location

Stand next to the inverter with your phone and check the WiFi signal meter for your 2.4GHz network. You need a strong signal — at least two or three bars, ideally more. Most inverters require RSSI of -70 dBm or better.

If the signal is weak, a WiFi extender or mesh node placed near the inverter is usually the quickest fix. A powerline ethernet adapter is more reliable and avoids WiFi altogether.

3
Check whether the router or password changed recently

If your broadband provider changed, your router was replaced, or your WiFi password was updated, the inverter still has the old credentials. It will keep failing to connect but you won't see any obvious error — it just stays offline. You need to run the WiFi setup process again with the new network name and password.

4
Check whether the device is in AP (hotspot) mode

When an inverter or dongle has no network to connect to, it broadcasts its own WiFi hotspot so you can configure it. Look at your phone's WiFi list for networks named with your inverter brand — for example "GivEnergy-A1B2C3", "Growatt-XXXXXX", or "SolarmanAP-XXXXXX".

If you see this, the device needs to be configured. Connect to the hotspot and follow the brand-specific setup process.

5
Run the WiFi setup process for your brand

If steps 1–4 are resolved and the device still won't connect, run a fresh WiFi setup from scratch. Most brands require you to connect to the device's AP hotspot first, then use either the app or a web browser to enter your home network credentials. See the brand-specific guides below for exact steps.

Still not connecting after all of the above?

If you have worked through all five steps and the device still won't connect, you are likely looking at one of these less-common causes:

WiFi dongle hardware failure

The WiFi module inside the dongle or inverter has failed. This is more common after lightning events, power surges, or on older units. Replacement dongles are usually available and low-cost — but you need to confirm this is the cause first.

Firmware bug introduced by an update

Some firmware updates have introduced WiFi connectivity regressions. If connectivity was lost immediately after a firmware update, the firmware may need to be rolled back or a patch applied — this requires remote access to the device configuration.

Router security settings blocking the device

Some routers with strict MAC filtering, AP isolation, or client isolation settings will prevent the inverter from connecting or from reaching the internet after connecting. Check your router's security settings and ensure IoT/device isolation is not blocking the inverter's MAC address.

Book a Remote Diagnostic

Your system is still generating. A WiFi connectivity fault only affects monitoring — it does not stop your solar panels generating or your battery operating. The system will continue to work as configured; you just won't be able to see live data until connectivity is restored.

FAQ

Frequently asked questions

The most common causes are: the inverter only supports 2.4GHz but your router is 5GHz or combined; the WiFi password changed after a router replacement; the signal at the inverter is too weak; or the device is stuck in AP mode waiting to be configured. Check these four things in order before going further.
No — almost all solar inverters and battery WiFi modules only support 2.4GHz. On combined networks (where both bands share one SSID) they may connect briefly then drop. The fix is to ensure a separate 2.4GHz SSID is available from your router by disabling band steering or smart connect.
When your router changes, so does the network name and password. Your inverter has the old credentials stored and cannot connect to the new network. You need to run the WiFi setup process again to update the stored credentials.
AP (Access Point) mode is when the dongle broadcasts its own WiFi hotspot instead of connecting to your network. This happens when it has no stored credentials or has been reset. You'll see an SSID like "GivEnergy-XXXXXX" in your phone's WiFi list. Connect to it, then follow the setup process for your brand to configure the home network connection.
No. WiFi connectivity only affects monitoring — your ability to view live and historical data. The system continues generating solar power and the battery continues operating as configured. Timed charge schedules are stored locally on the inverter and are not affected by loss of internet connectivity.
Options in order of reliability: add a WiFi extender or mesh node close to the inverter; use a powerline ethernet adapter to bring a wired connection near the inverter; or check whether the inverter supports a direct ethernet cable connection (many do, and it is the most reliable option). Avoid relying on a weak signal from a distant router.
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WiFi still not connecting? We can help.

A remote session talks you through the reconnection process for your specific dongle and inverter model, and confirms whether the issue is network-side or whether the dongle itself needs replacing.

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  • Dongle replacement arranged if needed

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