Red Falcon

Also interested if @mzezman doesn't take it.

I will send you a pm.

Here is the link for the battery: 
Switched battery 100ah 25.5v

Hi guys.
 
I see that SWITCHED has many lithium products available like their power stations including a 24v 100AH battery. 
I'm considering upgrading my current inverter batteries to their 24v 100ah battery. 
Is anybody familiar with using their products and how their quality is etc 
All input will be highly appreciated. 
 

@My Real Name
Call the price there are guys interested 
Look at what you could discount from new batteries take into account you used them from early 2023.

I also read your question as only switching grid off during the day and not have to get through the night as grid is on after sunset. 
I use my inverter without grid connected and can anytime switch the grid on via smart switch. I use only 1 panel to charge the battery and manage my load if connected to inverter. 
I have just checked my similar inverter. When grid is on and running from the battery after sunset it uses only 2.8W from grid. So not much per day. Some light load connected. It did go on bypass while the inverter stayed on. After switching off and on it switched to SBU. 
This is when charging is from PV ONLY after sunset. 

What is your battery capacity in kwh or Ah? If you have enough battery power to last you until pv wakes up you can set set the inverter work mode to SBU(program01) and charging source priority to OSO( program 16) then the inverter will disconnect from utility, no need to install a smart switch to switch utility off. The inverter will switch to utility only when the voltage in setting (12) is reached but remember the inverter will not charge the battery via utility the battery will only charge by means of pv.

This is what is should be like with no power used for load from the grid. 
The way I see the problem for @Red Falcon is that there is 1100W available from PV yet for a 900W load the PV drops to 350W and 550W is used from grid. This while his setting is to use PV 1st as priority. 

I believe that's normal for your model; it's so that when a load disconnects, you don't immediately push power back into the grid.
Some inverters have a setting for this; Axperts don't.

Just be patient. 

Yeah great service. 
 
Take inverter in. 
Scan serial number. 
Check warranty. If yes. 
Print job card 
Handed me a copy
 That's it. 
 

Great to hear inverter is back in service and also the speedy service you got from Rectron. 

If your machine has a high voltage PV mppt in the range of 400vdc max or higher then I am afraid I am the bearer of bad news. 
 
This implies that the machine was switched on when the pv was connected, possibly with a screw driver onto the pv input terminals. The screw driver probably momentarily touched the housing which is only about 2mm clearance away. 
The machine is transformerless and inadvertantly earthing one pv input affectively shorts out some igbt's in the dc-ac bridge. This is because one leg of the bridge output is your neatral, which for this understanding, is also earthed. 
This causes the live to short to earth via the igbts and they blow spectaculrly and immediately. 
As a result, next time you switch on, the axpert performs a bus soft start evaluation cycle. The bus voltage cannot reach a certain voltage because of the shorts over the blown igbts. The axpert teports error 09 and aborts.  Almost always will one or more igbt gate driver be also fried. 
Finding a repair person depends on where you are located. 

Yes please. 
I dont per se do repairs myself anymore, but I will get you in touch with 2 very capable young engineers, who will be able to asses the damage and quote accordingly. I will prompt them to PM you. 

So just an update. 
Firmware update fixed the issue. 
 
Thanks guys. 

I have been using S-100 x 2 and I am sure in 4 months there must have been times that my Hisense combo and 210L chest freezer started at the same time. In this period both have been running from the inverter 24/7.

You'd need to check with the vendors, and it may cost a bit of money, but I think software like Solar Assistant might help you out here.

So feedback. Connected the Chest Freezer. 
Start up power is too quick for the inverter to detect.
But running wattage fluctuates between  75-100 watts. 

So feedback. Connected the Chest Freezer. 
Start up power is too quick for the inverter to detect.
But running wattage fluctuates between  75-100 watts. 

OK, I just re-read the OP. It looks like you are already and backing up some lights and your WIFI. These are not great loads, but they are > 0, so you have a little less available than the various calculations allow for, and you run the risk of losing your lights and wi-fi.

You can try, if there is a time window where you can forego the lights and wi-fi if the system exhausts itself, but I think you're going to be really close to the edge. 

Buy more battery, I think. Once you back up the fridges then you'll start thinking about TV or computers. And the inverter is capable of backing up a lot more than you do at present. The batteries are your bottle neck.

These 2 pics show the normal current from a 12V battery powering a 210L fridge 12A and the captured peak current of 122A during starting. 

1mm2 cabtyre is rated for 10A or about 2.2KVA  So if you have a 3KVA inverter that gauge will be too thin.  Use 1.5mm2 cabtyre which is rated for 16A.   Your electrician can later use 2.5mm2 house wire to do the permanent installation.

Did you look for the rating labels on the appliances? Anyway, and as you are finding out, there is no simple answer. Fridges do not all have the same power demands. The consumption is not constant. New appliances are more efficient than those of a decade ago, and so will use less. 
So take @TaliaB's advice and try it. Be at home for the entirety of your first trial. Nothing should get damaged. The inverter or (more likely in this case) batteries will shut down if overloaded.
If you make it through a loadshed, now keep on observing to see how quickly the batteries recharge. You want them to recharge before the next load shed. 
This supposes you are backing up just those two appliances and that load sheds are 2ish hours. I can't see this set up making a 4 hour shed. 
If you can afford it, buy more batteries or get a good brand, 24v battery. That inverter is not the bottle neck here and can do quite a bit more. 
Let us know how it goes. The more evidence we get, the better advice we can give in future. 

The only way to know is to connect one at a time and see if they would run. You won't damage the batteries they will disconnect on overcurrent and shut the inverter down

If your batteries are 1C@50ah for 24vdc your bms will disconnect on overcurrent thus you are limited to 1100watts ac output 4.75 amps. It depends on your compressor size and RLA  (locked rotor amps) rating. If it is a small bar fridge it might but double door fridge freezer definetly not.