PV Inverter Not Starting Up: 2.5kW Installation, 8 Panels - How Long to Charge & How to Check?

Good day. I have such a problem, a photovoltaic installation has been set up for me. Exactly 8 panels with a power of 2.5 kW. The installers finished the assembly during the night, the day was cloudy, so they found that the inverter had not drawn power to fire and check if it works. A few days have passed, a bidirectional counter has been installed, but the inverter still does not start. The installer tells me there is a battery in there and it will take a while to recharge. My question is how long the inverter will run and is there any way to check if everything works as it should?

It is supposed to start immediately after switching on, there is no battery there.
At the bottom of the inverter, you should have a DC disconnect that should be turned on if it is on and nothing shows on the inverter's display you call the company to start 4 letters and come to check.
It doesn't matter whether a cloudy day or a solar panel should be producing some part of the electricity. Also check in the security box if everything is on.

Give photos of inverter and security boxes as you can, because maybe something needs to be turned on

Added after 1 [minutes]:

Just like marcinbbb writes

Everything is on and no reaction.

I also have GoodWe, if the panels were well connected, the inverter would report "Falaut". So either the team forgot to fasten any of the panels on the roof or the inverter to be replaced. If you have a multimeter, disconnect the connection cables that come off the roof of the multimeter to check the DC voltage and check if the voltage is supplied from the roof should be around 8 * 30V = 240V and you need to set this range on the multimeter. Before unplugging the cables, switch the DC switch preventively !!!
This way you will know what is the damaged inverter or somewhere on the panels or security.

Regardless of the version, you call the crew and have them fix it

I see 2 thongs, could there be 4 panels each?

The fitter made 2 strings and therefore the inverter does not start because it has too low voltage, take a picture of the center of this separates what enter four wires from DC panels.

Tech132 wrote:

The fitter made 2 strings and therefore the inverter does not start because it has too low voltage, take a picture of the center of this separates what enter four wires from DC panels.

It is rather one string, one arrester, two-pole protection and double pole break and two wires from panels and two to the inverter, the inverter also with one input

You just have to measure the voltage.

He writes a bit late, but the matter is already cleared. Apparently, damaged distribution boxes came out. One of them had a bad connection inside. The fitter has corrected and everything works.
I still have a little question like that. I have an Otus 3 bidirectional meter installed and can someone tell me how to read it? I found some data on the net that, for example, 1.8.0 is the total energy consumed. And 1.8.0.1 or 1.8.0.2 and 1.8.0.3 are tariffs. I have a G11 tariff and from what I found on the net, I should only be interested in 1.8.0. And now at 1.8.0 it comes out to let's say 159.4 kWh and 1.8.0.1 comes out 129.5 kWh and soybeans for a long time. What this is about ? The same is the difference between the two measurements of energy produced 2.8.0 and 2.8.1. Anyone help something?

1.8.0.1 - energy consumed last month, 2.8.0.1 - energy delivered last month. 1.8.0.2 etc. will appear in G11 in a month's time

I get it then. And why is there such a difference in the indications from the inverter and the meter? I have, for example, 19kwh produced on the inverter and in the application it shows the same and the meter shows 10 kWh in total.

Because you used 9kWh before the counter. The meter shows how much you gave to the network and not how much you produced, between the inverter and the meter you still have receivers at home (refrigerator, lighting, etc.) that consume the electricity produced.

So simply speaking, if I have to pay the bill at the moment, if I have 160 kWh consumed and 10 kWh returned, I will pay for 150 kWh?

you will pay for 152 kWh - with an installation 10kW

Does this produced energy somehow balance that if I had to pay for 152 kWh in January and in March or April I would have a surplus of produced energy, it can be transferred to another month?

Balancing is various for a given year. You have to pay for what you used up last, you won't be paying until this year (if you balance your production x 0.8 compared to consumption.