WantToGoSolar

Thanks for the screens - the system is working as intended. The installer set it up such that AC (grid) [AC First setting] will be used first between 00:00 and 23:59 (screenshot 1). So between those times the inverter and house will ALWAYS use grid first - regardless of what is happening with solar. If there is no grid  - which you observed - then the solar kicks in. Additionally the settings [AC Charge] show that the battery is to be charged from the grid at all times between 00:00 and 23:59 (screenshot 2)
If you want the solar to be primary use during the day then
Set your AC first time to be outside of daytime hours, e.g. 17:00-05:00 - this means between 5pm and 5am it will use grid first - you can change those settings on the app in the AC first row. You have 3 AC first rows (1-3) so you can chop and change as you see fit. Set your AC charge times accordingly - remember - during the AC charge time it will recharge your batteries from the grid. So only do this if you absolutely want to charge batteries from the grid If you look at my screenshots you'll see that i have not set a timeframe for AC first - so the inverter will never use grid to power loads
I do have an AC charge setting for 23:15 - 23:45 - as this system only has 1 battery I top it up just in case
Find AC first and AC charge settings that work for you as those determine when the grid is used. Outside of those times the system will use DC (solar and Battery). Additionally (to further complicate things) if you click [Take Load together] the system will blend AC, PV and Battery to meet the load requirements. start with the 2 above then once you have that set you can try this 3rd complication 
goodluck 🙂

Dude @mzezmanthank you so much for the above youre a real champ. I was stressing thinking the inverter was the wrong one or something. 
Will play around with the settings over the next few days and see what works best. Thanks again mate 👍 

Has anyone made any headway with the Luxpower SNA 5000 reporting a Shoto SDA10-48100 battery as 50AH? This seems to be the only forum discussing this problem. My supplier has recently updated my Luxpower SNA 5000 firmware to the latest version but the issue persists. 

Hi all. Managed to commissioning the paralleled units successfully. Thanks for the help. Just waiting for panels due to stock shortages. 

powerguru.co.za - used them for my install and they are installing a 5kw system at my MIL's house this week (both in PTA East)

Powerforumstore have some interesting additions to their range of inverters and batteries, including Deye, Luxpower, Solax, Magneto, Greenrich, Halo and Revov, the combos could come in at even better than that. I think that it's worth giving them a call.

Having had my Growatt for over a year now, I can attest to the fan noise. The Fan speed is triggered by load, which ensures the Inverter does stay cool.
Having known about it before hand I planned it to be placed in the Garage, so the noise is no issue.
The Inverter did pack up after a year but was repaired under guarantee and is working perfectly again. Mosfets were replaced.
My neighbour got himself the Luxpower and just two weeks ago added a second Luxpower in parallel. Fan noise about the same as on the Growatt, but he also has his equipment in the garage. His experience with his 2 X AM-2  has been on par too.
Gave me the chance to explore that option too, and the dual MPPT is something that would benefit me as I have 2 parallel strings now feeding the Growatt, where the one string is subject to shading certain times of day, resulting in reduced solar yield. Not too bad but had I had the Luxpower the full sun string would feed without any losses. 
Either one of these Inverters will serve the purpose.

Luxpower has the advantage of two MPPTs, which makes it more versatile into the future for panels facing different directions.

So far so good, almost hitting my target below 5 units per day. Just need to get more disciplined and braai more 🤩

@ZCS
That would mostly depend on your household requirements (base Load).
My wife and I are low energy users and we very rarely use our stove (Braai tastes and works better)

@Burt, check your DM's. I sent you a msg
 
 

That looks about right - you should be able to go up to possibly 7/8 panels. Whats the VOC of the panels?

Are these the panels you are referring to?
https://www.solar-shop.co.za/canadian-solar-panels/741-canadian-solar-545w-super-high-power-mono-perc-hiku-with-mc4-evo2.html

If so, the VOC is 49,4V  X 5 = 247,5V
Your Inverter specifies a max VOC 0f 480V so you are well inside the operating specs.
My neighbour has the exact Inverter and he has two strings of 6 X 545W JA panels each. As happy as can be. His system is performing top notch.
Edit: Need to mention that he added a second identical Inverter, now in parallel and each string feeds one inverter.

Attached picture of luxpower blending PV and AC.

Since this chain is relevant, I have decided to share my experience:
I have 6 x 410watt Canadians giving 2.4 Kw to a LuxPower 5Kw. Battery is a 3.6Kva LSB.
Running 18000btu aircon, 0.75Kw pool pump, 400 watt basic stuff and when fridge is OFF then at night we run at 200watt.
The geyser was a previous project and runs on a water heater sun collector.
You can read about my disaster on another forum, this is the result.
The LuxPower is amazing. Has blend capabilities second to none.
My first full month of use has changed my metered use from 1137 KWH to 730 KWH, a bit disappointing. ( a lot of cloudy days - maybe it will get better. )
If this is the rate of ROI then the total installation cost of 64K is going to take 55 months ( at current electrical rates )
It remains to be seen how long the LuxPower will last.
Is this worth it?
Considering that I work from home and make my money using computer systems - I think yes.
Final thought. This is NOT something to tackle without research and assistance. If you have doubts, get a reputable company ( a very scarce item ) and BEWARE scamsters. This space is absolutely soaked with chancers.

I took the dive last year in August and then added Solar Assistant end of October.
My usage was and is pretty similar to yours. Between 250 and 300kW per month.
My full system is in the signature.
I manage with one 5,5kW battery and I have many a time considered the extra R25k for a second battery just to give me complete peace of mind.
My system is in island mode, i.e. I use either my solar or if I need to I switch over to Grid via a change over switch before my main DB.
We had some really cloudy days where I switched to grid to ensure my battery is charged fully before sunset. 
My usage from the Grid since December has been around 20kW per month average. Even at R3 per kW that is about R60. That would be R720 per year or R7200 over ten years ignoring electricity price increases. And that is what has stopped me from adding another battery. It makes no economic sense to have bragging rights of zero grid usage when the additional battery cost is 3 times the amount of using Grid for that little bit. 
Only once in the beginning did my battery end up at 20% SOC. Normally it is between 30 and 40% at sunrise and fully charged just after 9 now in the wintertime.
At 10 my Geyserwise switches on the 3kW element to heat the water to the max the Geyserwise allows. The rest of the day the flat panel Geyser conversion continues to heat it further.
I obviously manage the high load appliances manually to stay within the 5kW limit. 
My Solar system stats for the last 6 months or so are in the table below.
Lots of spare capacity during the day. I probably only use about 20- 30% of the potential energy of the panels per day. 

I would start smaller but allow myself to scale, and also just find a reliable installer that is willing to travel a little, you would probably need to provide accomodation or be willing to pay for it if the job goes over a day which it probably will.