A Tadiran/Gree wall split A/C during defrosting on heating

https://www.youtube.com/watch?v=xmsoMLfX5XY
At 21.2.2023, the A/C at the low floor of my current hostel, began defrosting the outdoor coil, so I decided to see what happening in the indoor coil during the defrosting, as it may be filled with ice during this period.