Rattling/clacking/knocking sound

[Rhaixxa]

I saw the video. sounds more like the ac fan is hitting some leaves inside. with the ac off, can you rev to about 1000rpm and note if there is a clatering sound?

Sent from my SM-G935F using Tapatalk

Yes. I did that earlier, and no, wala po ung sound pag naka off ang AC. Except when i revved it right after i turned off the AC. Pero after a few minutes after i turned off the AC, i revved it again and wala na ung sound.