hi everyone, i just got my persona elegance b line auto last few days, so far overall quite satisfied, but got some minor problem need to clarify:

1. Got sound like screw loose from air cond hose, after turn off fan control knob, the sound will disappear. Have anyone experience this before?

2. felt like air cond under swing when operation, cool air blow out but after few second will off and blow out again after few second, this repeat and repeat. Scared might be control knob viaration problem but LED no off. Is it true?