Split Type Aircon: Which is best?

[StockEngine]

So many posts on FB with conflicting advices. Some say don't use the aircon or it'll clog with ash or the ash will cause some kind of short circuit. Concepcion Industries says it's perfectly fine to use it.

So, which is correct?

I actually think it's okay to use it dahil air intake comes from indoor air. The outdoor unit blows air outwards naman.

#perfectly fine to use it. It will not severely clog up. If it clogs up it will simply stop cooling to protect itself. Overpressure or overheat sensors work. It will not self destruct. I work on chillers