Charging problem(?) with Must 3000W (PV18-3024VPM)

[mustinverter]

Good day everyone!

I have a question - recently in my house was installed next configuration:
- Must 3kWt (PV18-3024VPM)
- Batteries Must Gel Battery 100AH Deep Cycle (code FCDG12-1) x2 + battery balanceer

In settings 1) discharge option is set 25.2V
2) charge option is set 28.4V
3) 10A current for charging

It lated 3 days after installation and now current voltage is lower that was set previously.
Indication CHG is flashing in period of 1minute, but looks like batteries in discharging mode, not in charging.

question is if is this ok? or I need to reconfigure something?

 

[mustinverter]

problem is solved by myself - in menu item- [10] I had 10A, change to 20A and everything is working fine now - batteries charging.