I recently acquired 2x Luxpower SNA 5000 inverters to replace my old Axpert 5kw parallel set up.

The problem I'm having, is I have no idea if the inverters are actually "speaking" to each other. The Axperts would have an indicator on their displays to say if they were master/slave (parallel comms working). The Luxpowers, as far as I can tell, have no such indicator on their display.

Both inverters have been set to parallel, single phase, shared battery on the inverters themselves. Dipswitches 1+2 set to ON for both inverters, 2x standard straight RJ45 cables for parallel comms (some of their videos show 1x cable for 2 in parallel, others 2x cables). There's no warnings or errors when both inverters are switched on (AC or running off batteries), however I've been hesitant to switch on the EPS until I can confirm the inverters are actually correctly set up in parallel.

I don't have an installer Luxpower account, only an end user account 🤦‍♂️, and the Luxpower videos and manuals all go through Parallel settings on the Luxpower portal to complete the parallel setup.

Are there mandatory steps in the Luxpower portal to get parallel working, or is it just for monitoring? Is there an indicator on the LCD to indicate parallel comms is working?

Hmm, I am actually not sure how necessary the parallel settings on the portal are to be honest.

I do it just because they say one should and it makes it easier to monitor, although I think it is just for that - monitoring. I could however be very wrong.

 

Maybe turn off the breakers which are meant to be fed by the inverters, then turn the EPS switches on and see what happens - without errors I doubt there will be problems.

I recommend 2x network cables, if one inverter goes down for whatever reason (maybe a firmware update) and you are only using 1x cable, then the inverter comms gives an error. I experienced this and it was no longer an issue when I added the 2nd comms cable.

 

Only indicator I am aware of is on the web portal. So that won't help in your situation. If the inverters are set to parallel and there are not comms issues, then the inverters should be taking to each other.

 

Another way to verify, I just thought of this while typing out this message, is to change the settings on one of the inverters and see if the setting change is automatically applied to the other inverter. If so, then you know 100% that the inverters are talking to each other.

Something like the AC First time settings should work well to test.

Thanks @PsyCLown.

As you suggested, I tested settings propagation between the inverters and it was working fine. All up and running on the new inverters in parallel.

So I can confirm, the Luxpower portal really is only for monitoring, you don't need it to set up anything. You can't set up parallel monitoring on the Luxpower portal without an installer account, which seems a bit stupid given you can set up all the other monitoring. I primarily use Solar Assistant though, so not a big problem.

1 hour ago, Blackhand said:

Thanks @PsyCLown.

As you suggested, I tested settings propagation between the inverters and it was working fine. All up and running on the new inverters in parallel.

So I can confirm, the Luxpower portal really is only for monitoring, you don't need it to set up anything. You can't set up parallel monitoring on the Luxpower portal without an installer account, which seems a bit stupid given you can set up all the other monitoring. I primarily use Solar Assistant though, so not a big problem.

Try asking [email protected] to finish the parallel settings so you can use the luxpower app for monitoring. 

19 hours ago, Buyeye said:

Try asking [email protected] to finish the parallel settings so you can use the luxpower app for monitoring. 

He uses Solar Assistant, so no need to use the app.

I also seldom use the Luxpower app after integrating my inverters into Home Assistant.

On 2024/01/09 at 3:28 PM, PsyCLown said:

Hmm, I am actually not sure how necessary the parallel settings on the portal are to be honest.

I do it just because they say one should and it makes it easier to monitor, although I think it is just for that - monitoring. I could however be very wrong.

 

Maybe turn off the breakers which are meant to be fed by the inverters, then turn the EPS switches on and see what happens - without errors I doubt there will be problems.

I recommend 2x network cables, if one inverter goes down for whatever reason (maybe a firmware update) and you are only using 1x cable, then the inverter comms gives an error. I experienced this and it was no longer an issue when I added the 2nd comms cable.

 

Only indicator I am aware of is on the web portal. So that won't help in your situation. If the inverters are set to parallel and there are not comms issues, then the inverters should be taking to each other.

 

Another way to verify, I just thought of this while typing out this message, is to change the settings on one of the inverters and see if the setting change is automatically applied to the other inverter. If so, then you know 100% that the inverters are talking to each other.

Something like the AC First time settings should work well to test.

I have exactly the same problem. 2 5kv luxpower inverters setting to parallel with end user account. When I turn them on one inverter starts to beep displaying error code. Ihave tried to get in touch with luxpowertek support but no answer. What assistance can I get