I seem to have read one of the reviews that the reason Solis has no LCD display such as the Deye/Sunsynk is to have "one less thing failing" on the inverter as an argument. This means one can only tweak Depth of Discharge changes or Charging parameters using the mobile app or wifi.

I have a Solis S6 6Kw 1p Pro inverter and had an instance where my wifi was down. I was unable to connect to the inverter to see the flow-chart using bluetooth connectivity.

Firstly, my wifi bundle ran out and I was unable to check how my Solis S6 was performing "locally" using bluetooth. Once I recharged with my Internet Service Provider, I had an issue where there was no internet connectivity and was also unable to check what was going on. Fortunately the inverter continued to function without issues.

If something had needed to be done or tweaked, I would have been stuck as an End-user. Am just thinking it would be good if the bluetooth worked. I did not want to unscrew the cap on my dongle and connect using a cable to my pc to check if I could connect though, perhaps this would have worked and enabled me to have access to make tweaks or get info, not sure.

If one has the Advanced User Profile set up by the installer would they be able to connect locally via bluetooth, anyone with such experience or has had a need to do this?

In short, yes you can connect via bluetooth from your phone.

I personally do not use the app often, just connected to home assistant to allow realtime comms all the time.

The wifi connectivity isn't the greatest, although I cannot comment on how it compares to other brands, but close proximity power isn't a wifi signals best friend. Signal is weak, but never disconnects.

13 hours ago, Pho3niX90 said:

In short, yes you can connect via bluetooth from your phone.

I personally do not use the app often, just connected to home assistant to allow realtime comms all the time.

The wifi connectivity isn't the greatest, although I cannot comment on how it compares to other brands, but close proximity power isn't a wifi signals best friend. Signal is weak, but never disconnects.

Unfortunately @Pho3niX90 that's not my real-world experience. Am unable to connect via "bluetooth only" to the Solis without wifi being on and with an active wifi connection.

Are you able to run an ethernet cable to your inverter?

4 hours ago, Ben Harper said:

Are you able to run an ethernet cable to your inverter?

Yes I am. If you unscrew the Datalogger it has an ethernet connection on it, at least on the Datalogger I have.

So is that a workable solution for you - I mean would it solve your problem?

I just installed my Solis S6 last weekend, and the wifi has been fine so far, but I thought I might as well put a cable in there. I agree the app is a bit janky when you first install it, and get it configured. But my experience has been fine once I had it all setup.

36 minutes ago, Ben Harper said:

So is that a workable solution for you - I mean would it solve your problem?

I just installed my Solis S6 last weekend, and the wifi has been fine so far, but I thought I might as well put a cable in there. I agree the app is a bit janky when you first install it, and get it configured. But my experience has been fine once I had it all setup.

The thing is that wifi is not always stable and the backup on the Solis S6 is bluetooth. It's the bluetooth side which I would love to be able to connect locally using, if internet connectivity is down or it's off. Have you tried switching of your wifi and still checking if you are able to still connect to the Solis?

No, I haven't tried this.

I'll need to run another ethernet cable through to be DB and report back.

22 minutes ago, Ben Harper said:

No, I haven't tried this.

I'll need to run another ethernet cable through to be DB and report back.

For clarity, there’s two main ways to connect to the Inverter/Solis:

1. Wi-Fi;

2. Bluetooth.

My only issue is having backing when Wi-Fi is down, thereby connecting using Bluetooth.

Regarding the Wi-Fi & internet connectivity you can use Wi-Fi and that’s fine or likely use an Ethernet cable through the Datalogger port. Am just wondering if anyone has done so “locally”, without Wi-Fi, meaning you connect a laptop directly via the Datalogger Ethernet port?

On 2025/04/08 at 2:41 PM, Moffat said:

For clarity, there’s two main ways to connect to the Inverter/Solis:

1. Wi-Fi;

2. Bluetooth.

My only issue is having backing when Wi-Fi is down, thereby connecting using Bluetooth.

Regarding the Wi-Fi & internet connectivity you can use Wi-Fi and that’s fine or likely use an Ethernet cable through the Datalogger port. Am just wondering if anyone has done so “locally”, without Wi-Fi, meaning you connect a laptop directly via the Datalogger Ethernet port?

You are within bluetooth range, correct?

For me, wifi locally doesn't work via the app, bluetooth does.

Wifi and Ethernet would be identical, just the means of broadcasting data is different, but usage is exactly the same.

Edited April 10, 20251 yr by Pho3niX90

19 hours ago, Pho3niX90 said:

You are within bluetooth range, correct?

For me, wifi locally doesn't work via the app, bluetooth does.

Wifi and Ethernet would be identical, just the means of broadcasting data is different, but usage is exactly the same.

19 hours ago, Pho3niX90 said:

You are within bluetooth range, correct?

For me, wifi locally doesn't work via the app, bluetooth does.

Wifi and Ethernet would be identical, just the means of broadcasting data is different, but usage is exactly the same.

19 hours ago, Pho3niX90 said:

You are within bluetooth range, correct?

For me, wifi locally doesn't work via the app, bluetooth does.

Wifi and Ethernet would be identical, just the means of broadcasting data is different, but usage is exactly the same.

Am standing about 30cm from the Inverter and bluetooth shows Inverter and Dongle but

20 hours ago, Pho3niX90 said:

You are within bluetooth range, correct?

For me, wifi locally doesn't work via the app, bluetooth does.

Wifi and Ethernet would be identical, just the means of broadcasting data is different, but usage is exactly the same.

As for me, Wifi works locally as well as through the Solis Cloud web portal. It's the local connectivity in the event that wifi is down that's failing. See attached screenshots.

10 hours ago, Moffat said:

As for me, Wifi works locally as well as through the Solis Cloud web portal. It's the local connectivity in the event that wifi is down that's failing. See attached screenshots.

Perhaps lets split the web portal and phone app.

Web Portal works only via internet connection, either with wifi or ethernet.

Bluetooth works only with the phone app, but also if the inverter has internet. Local (direct) wifi connection via the app doesn't work.

One thing, when choosing the bluetooth drvice, you will see both the inverter, and the dongle, you need to select the dongle. Can you see them?

Edit: I do remember reading in the solis review thread, that OP also had issues connecting via bluetooth, he let support update the inverter firmware, and cleared the apps cache, after which it started working.

Edited April 11, 20251 yr by Pho3niX90

@Pho3niX90 I guess let me involve Solis support for another firmware review/update. I’ve had one at initial installation and this was after OPs review and had not bought inverter when I read that review. You’d think any firmware update fixes all bugs for all new installs. I even deleted my phone app at some point and installed a newer one because at one time there was an updated app and my Powerflow just stopped showing information. Will let you know how I get on and if there’s finally success locally without Wi-Fi (testing by switching off Wi-Fi).

Edited April 12, 20251 yr by Moffat

@Moffat have you succeeded in your quest?

If you want to go to more extremes, you can actually extract the password from the inverter via modbus.

43620: Gives you the password level, 1 = installer, 2 = end user, 3 = administrator
43621 - 43623: Passwords for each user level

13 hours ago, Pho3niX90 said:

@Moffat have you succeeded in your quest?

If you want to go to more extremes, you can actually extract the password from the inverter via modbus.

43620: Gives you the password level, 1 = installer, 2 = end user, 3 = administrator
43621 - 43623: Passwords for each user level

No joy as I have not pursued engaging Solis support yet. Now with regards to going the modbus route, do I connect my laptop directly into the inverter using the comms cable through the Datalogger...? Also find an added attachment with notes. In my part of Africa, we have some unusual requests that may not be common globally such as loadshedding lasting from 0645hrs - 2200hrs (no, that's not a power fault either) and if it's a very cloudy day nursing and running a household on battery isn't an easy chore.

My Solis installer put the CT inside the inverter. Can someone confirm that the schematic I have attached here is correct in terms of the positioning of the CT where it shows it located by the main DB on the incoming main grid line. In my mind this would enable me to get a full reading of:

1. Total grid input to the whole house;

2. Create a Smart Load option for when my batteries are full and can divert excess solar power to a dedicated smart load such as a dishwasher

• My other intermittent issue is my lights are flickering when running off battery lately, not sure why.

• I also have not yet been able to get Solis inverter to have it work using only Bluetooth when there's no internet so I can make changes to settings using the mobile App.

I'm not a certified installer nor electrician so if there's areas in my schematic that are wrong, kindly assist so this can be amended. My panels are all in parallel (11 x 250w) but this may not be correctly shown on the schematic. Also currently am running off 1-battery but intend to have a total of 3 x 5kw batteries once funds permit. During the day from 6am to 12midnight am running all my loads off the one battery to a reserve of 40% and then it reverts back to grid but so far, I've managed to not get to 40%. At midnight my grid is set to charge my battery only to 50% and then I run off the grid between midnight and 5:59am daily.

Anyone's assistance would be most appreciated.

Solis Schematic Diagram.pdf

Edited June 14, 20251 yr by Moffat
Added more info.

1 hour ago, Moffat said:

My Solis installer put the CT inside the inverter. Can someone confirm that the schematic I have attached here is correct in terms of the positioning of the CT where it shows it located by the main DB on the incoming main grid line. In my mind this would enable me to get a full reading of:

1. Total grid input to the whole house;

2. Create a Smart Load option for when my batteries are full and can divert excess solar power to a dedicated smart load such as a dishwasher

• My other intermittent issue is my lights are flickering when running off battery lately, not sure why.

• I also have not yet been able to get Solis inverter to have it work using only Bluetooth when there's no internet so I can make changes to settings using the mobile App.

I'm not a certified installer nor electrician so if there's areas in my schematic that are wrong, kindly assist so this can be amended. My panels are all in parallel (11 x 250w) but this may not be correctly shown on the schematic. Also currently am running off 1-battery but intend to have a total of 3 x 5kw batteries once funds permit. During the day from 6am to 12midnight am running all my loads off the one battery to a reserve of 40% and then it reverts back to grid but so far, I've managed to not get to 40%. At midnight my grid is set to charge my battery only to 50% and then I run off the grid between midnight and 5:59am daily.

Anyone's assistance would be most appreciated.

Solis Schematic Diagram.pdf

I belief one should stick to the basics and that is put the CT where it should be as per the Solis drawing. AFAIK the current position would prevent exporting to the non essential side. This means part of the inverter functionality is WASTED.

I think you mean all your 250W panels are in series and not parallel. The Solis MPPT will not work due to a low voltage if all 11 were in parallel.

On 2025/06/14 at 11:48 PM, Scorp007 said:

I belief one should stick to the basics and that is put the CT where it should be as per the Solis drawing. AFAIK the current position would prevent exporting to the non essential side. This means part of the inverter functionality is WASTED.

I think you mean all your 250W panels are in series and not parallel. The Solis MPPT will not work due to a low voltage if all 11 were in parallel.

@Scorp007 You’re correct in respect of my panels being in series, had temporary “brain-freeze”. Previously on my 3Kva system I had 2-strings (6 each) in parallel. In terms of my schematic, my installer seems not to understand my reasoning or need to move my CT as he’s opting for the easiest way and hence CT is presently in the inverter. It’s working but as you and I agree am wasting an important part of the inverter since nothing can be exported to non-essential loads.

My whole house is on essentials for now, but once I increase my loads with more non-essential items like a washing machine and dishwasher then things will need to be set properly as per schematic I did.

My only challenge still, is getting a way to communicate with the inverter when I have no internet using only bluetooth. Not sure if the location of the CT has anything to do with it, but I highly doubt that.

Edited June 17, 2025Jun 17 by Moffat
Added pic

2 hours ago, Moffat said:

@Scorp007 You’re correct in respect of my panels being in series, had temporary “brain-freeze”. Previously on my 3Kva system I had 2-strings (6 each) in parallel. In terms of my schematic, my installer seems not to understand my reasoning or need to move my CT as he’s opting for the easiest way and hence CT is presently in the inverter. It’s working but as you and I agree am wasting an important part of the inverter since nothing can be exported to non-essential loads.

My whole house is on essentials for now, but once I increase my loads with more non-essential items like a washing machine and dishwasher then things will need to be set properly as per schematic I did.

My only challenge still, is getting a way to communicate with the inverter when I have no internet using only bluetooth. Not sure if the location of the CT has anything to do with it, but I highly doubt that.

The CT should have no bearing on your WiFi operation.

If your WiFi is connected to the inverter you should have Internet all the time so I don't understand why you mention when you have no Internet.

If you can get by by not exceeding the inverter capacity you can perhaps try and just manage your peak loads then the inverter can use grid on bypass mode when the loads exceed the PV value.

My Internet Service Provider is poor sometimes plus at one time also had Fiber optic cables being damaged. Yes, I do try to manage loads but with one battery it’s tough-going for now.

24 minutes ago, Moffat said:

My Internet Service Provider is poor sometimes plus at one time also had Fiber optic cables being damaged. Yes, I do try to manage loads but with one battery it’s tough-going for now.

I suppose if the grid is reasonably reliable one can use the grid when having a small battery. The last 2 weeks were tough for me as the lots of shade due to long shadows is hurting me. Already used 4 times the grid of what I used in May.

5 hours ago, Moffat said:

My only challenge still, is getting a way to communicate with the inverter when I have no internet using only bluetooth.

Here is an step by step guide from Solis how to connect the inverter to Bluetooth. See link below.

https://solis-service.solisinverters.com/en/support/solutions/articles/44002504766-s6-hybrid-series-soliscloud-app-local-bluetooth-connection-guide

6 hours ago, Scorp007 said:

I suppose if the grid is reasonably reliable one can use the grid when having a small battery. The last 2 weeks were tough for me as the lots of shade due to long shadows is hurting me. Already used 4 times the grid of what I used in May.

Yeah am also struggling with overcast days meaning I don't get to midnight still running off battery without the grid having to kick in. Currently our grid has been somewhat reliable. Previously we used to go up to 18hours without the grid.

4 hours ago, TaliaB said:

Here is an step by step guide from Solis how to connect the inverter to Bluetooth. See link below.

https://solis-service.solisinverters.com/en/support/solutions/articles/44002504766-s6-hybrid-series-soliscloud-app-local-bluetooth-connection-guide

On first installation, managed to setup the Solis as per this link. This evening I did the following:

Option A

1. Switched off wifi on my mobile phone but kept bluetooth on (on my phone) but got the error message "The Internet connection appears to be offline"

2. I switched of my router so no wifi would connect to the Inverter

The result:

• Was unable to connect to Datalogger or Inverter

Option B

1. Kept my router off so Inverter is connected to wifi

2. Turned on mobile data for Solis App on my mobile phone

The result:

• I was able to connect to the Inverter as well as the Datalogger and also am able to change settings

Conclusion:

• One can connect to Solis inverter using bluetooth but phone device needs to have mobile data

• One can connect to Solis inverter datalogger/inverter even if there's no wifi for Inverter but connecting device needs data and bluetooth to be on.

5 hours ago, TaliaB said:

Here is an step by step guide from Solis how to connect the inverter to Bluetooth. See link below.

https://solis-service.solisinverters.com/en/support/solutions/articles/44002504766-s6-hybrid-series-soliscloud-app-local-bluetooth-connection-guide